Direct drive motor mounting structure of a drum washing machine and drum washing machine

Abstract

The utility model discloses a direct drive motor mounting structure of drum washing machine and drum washing machine. The utility model discloses a direct drive motor mounting structure of drum washing machine includes the mounting seat, one side is used for installing direct drive motor, first stator mounting structure is along the peripheral direction scattering and is arranged, second stator mounting structure is along the peripheral direction and is arranged integrally, first stator mounting structure is lower than second stator mounting structure, wherein, the distance of first stator mounting structure to the center through -hole of mounting seat is greater than the distance of second stator mounting structure to the center through -hole of mounting seat. The utility model discloses a direct drive motor mounting structure of drum washing machine, through setting first stator mounting structure and second stator mounting structure, installs direct drive motor, and the outer stator can be fixed through first stator mounting structure, and the inner stator can be fixed through second stator mounting structure, has improved the versatility of motor mounting seat.

Description

Technical Field

[0001] This utility model belongs to the field of motor technology, specifically, it relates to a direct drive motor mounting structure for a drum washing machine and a drum washing machine. Background Technology

[0002] Front-loading washing machines use the friction between the drum, driven by an electric motor, and the clothes to wash them. This method is characterized by minimal damage and tangle-free washing, and also provides the effects of pounding and rubbing.

[0003] Among existing drum-type washing machines, there are two types: indirect drive washing machines, in which the driving force of the electric motor is transmitted to the drum through a belt indirectly wound around the motor pulley and the drum pulley; and direct drive washing machines, in which the direct drive motor is directly connected to the drum to directly transmit the driving force of the motor to the drum. Direct drive washing machines are widely used due to their lower energy consumption and noise levels.

[0004] In existing technology, direct drive motors in drum washing machines are typically mounted on motor mounting brackets to improve stability. Direct drive motors can be divided into external stator type and internal stator type. The fixed positions of the stator on the motor mounting bracket differ between external stator type and internal stator type motors. When installing different types of direct drive motors, it is necessary to select a compatible motor mounting bracket. External stator type motors and internal stator type motors require different motor mounting brackets, which reduces the versatility of motor mounting brackets.

[0005] In view of this, this utility model is proposed. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art. The first objective is to provide a direct drive motor mounting structure for a drum washing machine. By setting a first stator mounting structure and a second stator mounting structure, the installation of either an inner stator or an outer stator can be satisfied, thereby improving the versatility of the motor mounting base.

[0007] The second objective is to provide a drum washing machine that can flexibly install either an external stator direct drive motor or an internal stator direct drive motor according to actual needs, without the need to re-process the motor mounting bracket, thereby improving installation flexibility and compatibility.

[0008] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows: A direct drive motor mounting structure for a drum washing machine, comprising: Mounting bracket, one side is used to mount the direct drive motor; The first stator mounting structure is distributed circumferentially along the mounting base; The second stator mounting structure is integrally arranged along the circumference of the mounting base; The first stator mounting structure is lower than the second stator mounting structure; Wherein, the distance from the first stator mounting structure to the central through hole of the mounting base is greater than the distance from the second stator mounting structure to the central through hole of the mounting base.

[0009] Furthermore, the first stator mounting structure includes a plurality of first bosses; Each first boss is spaced apart along the circumference of the mounting base; The second stator mounting structure is an annular second boss; The second boss protrudes from the center through hole of the mounting base.

[0010] Furthermore, the mounting base is formed with a mounting surface; Both the first stator mounting structure and the second stator mounting structure protrude from the mounting surface; The mounting base has an annular protrusion extending from the mounting surface; The protruding ridge, the first stator mounting structure, and the second stator mounting structure are concentrically arranged; The second stator mounting structure is arranged around the outer periphery of the protruding ridge; The second stator mounting structure is lower than the protruding ridge.

[0011] Furthermore, the mounting base includes an integrally formed first mounting portion and a second mounting portion; The first mounting part is located on the outer periphery of the second mounting part; The first stator mounting structure protrudes from the first mounting portion and forms a notch on the side of the mounting base opposite to the mounting surface; The second stator mounting structure protrudes from the second mounting portion.

[0012] Furthermore, the first mounting part and the second mounting part are arranged at intervals; The first mounting part and the second mounting part are connected by a reinforcing rib; The first stator mounting structure is disposed between the first mounting part and the reinforcing rib; The second stator mounting structure is disposed on the mounting surface of the second mounting part and is disposed near the end of the reinforcing rib.

[0013] Furthermore, a support seat is provided at the connection between the first boss and the reinforcing rib; The support extends from the end of the reinforcing rib in a direction away from the reinforcing rib to form an arc-shaped transition surface. The first stator mounting structure includes a first boss. The side of the first protrusion closest to the first mounting part is fitted to the inner peripheral wall of the first mounting part. The side of the first boss closest to the first mounting part is connected to the reinforcing rib.

[0014] Furthermore, a support seat is provided at the connection between the first boss and the reinforcing rib; The support extends from the end of the reinforcing rib in a direction away from the reinforcing rib to form an arc-shaped transition surface.

[0015] Furthermore, each first protrusion is provided with a first fixing part for fixing the outer stator; At least two of the first protrusions are provided with positioning parts for positioning the outer stator.

[0016] Furthermore, the second boss is provided with a plurality of second fixing parts for fixing the inner stator; Each of the second fixing parts is arranged at intervals along the circumference of the second boss.

[0017] Furthermore, a drum washing machine includes an outer drum on which the aforementioned direct drive motor mounting structure for a drum washing machine is installed.

[0018] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art.

[0019] 1. The direct drive motor mounting structure of the drum washing machine of this utility model, by setting a first stator mounting structure and a second stator mounting structure, allows the outer stator to be fixed by the first stator mounting structure and the inner stator to be fixed by the second stator mounting structure when installing the direct drive motor, thereby improving the versatility of the motor mounting base.

[0020] 2. The direct drive motor mounting structure of the drum washing machine of this utility model has a first stator mounting structure disposed on a reinforcing rib, and a support base is formed on the reinforcing rib. The second stator mounting structure is integrally formed with the mounting base, which improves the strength of the first stator mounting structure and the second stator mounting structure themselves and ensures the stability after installation.

[0021] 3. The drum washing machine of this utility model can be flexibly installed with an external stator direct drive motor or an internal stator direct drive motor according to actual needs, without the need to re-process the motor mounting bracket, thus improving installation flexibility and compatibility.

[0022] Meanwhile, this utility model has a simple structure, significant effects, and is suitable for widespread use.

[0023] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0024] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings: Figure 1 This is a front view of the direct drive motor mounting structure of the drum washing machine of this utility model; Figure 2 This is a schematic diagram of the direct drive motor mounting structure of the drum washing machine of this utility model; Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0025] In the figure: 1. Mounting base; 11. Mounting surface; 12. First mounting part; 13. Second mounting part; 14. Protruding ridge; 2. First stator mounting structure; 21. First boss; 22. First fixing part; 23. Positioning part; 3. Second stator mounting structure; 31. Second boss; 32. Second fixing part; 4. Rotor shaft; 5. Reinforcing rib; 6. Support base.

[0026] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0028] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation 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.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Front-loading washing machines are designed to mimic the principle of beating clothes with a stick. The electric motor rotates the outer drum, causing clothes to be repeatedly lifted and tumbled within it. Combined with the action of detergent and water, this repetitive motion cleans the clothes. Because of their large drum capacity, front-loading washing machines can wash delicate fabrics like cashmere and silk, minimizing wear and tear and effectively preventing clothes from tangling.

[0031] A drum washing machine includes a housing and a drum assembly. The housing has a clothes inlet, and the drum assembly is installed inside the housing. The drum assembly is connected to the clothes inlet of the housing through a window gasket.

[0032] In this embodiment, when the drum washing machine has a twin-tub structure, the tub assembly includes an outer tub and an inner tub fitted inside the outer tub. The axis of the outer tub extends horizontally or slightly upward at the tub opening. The outer tub is movably installed inside the housing 1, and a drive motor is installed on the rear side of the bottom of the outer tub to drive the inner tub to rotate and perform washing, spin-drying, and other treatments on the clothes inside the inner tub.

[0033] In drum washing machines, direct-drive motors are generally used. Direct-drive motors consume less energy and produce less noise. To improve installation strength, a motor mounting bracket is installed at the bottom of the outer drum. Direct-drive motors can be divided into external stator type and internal stator type. The fixing position of the stator on the motor mounting bracket differs between external stator and internal stator motors. When installing different types of direct-drive motors, a compatible motor mounting bracket must be selected. External stator motors and internal stator motors require different motor mounting brackets, reducing the versatility of motor mounting brackets.

[0034] To address the aforementioned issues, this application provides a motor mounting bracket that can accommodate both internal stator direct-drive motors and external stator direct-drive motors, achieving a "dual-purpose" design and improving the versatility of the motor mounting bracket.

[0035] like Figures 1 to 3As shown, the direct drive motor mounting structure of this utility model for a drum washing machine includes a mounting base 1, a first stator mounting structure 2, and a second stator mounting structure 3. The mounting base 1 is disc-shaped and can be connected and fixed to the outer drum of the drum washing machine using screws or other fasteners. One side of the mounting base 1 is used to mount the direct drive motor, and the side of the mounting base 1 away from the direct drive motor is in contact with the bottom of the outer drum. A through hole is provided at the center of the mounting base 1 for mounting the rotor shaft 4 of the direct drive motor. One end of the rotor shaft 4 is connected to the inner drum, and the other end is connected to the rotor of the direct drive motor. When the rotor rotates, it drives the rotor shaft 4 to rotate, thereby realizing the rotation of the inner drum.

[0036] Specifically, the rotor shaft 4 is mounted on the mounting base 1 via bearings, and the end of the rotor shaft 4 is connected to a spline for connecting the rotor of the direct drive motor.

[0037] In this embodiment, the first stator mounting structure 2 and the second stator mounting structure 3 are coaxially arranged, and both are arranged circumferentially along the mounting base 1. The distance from the first stator mounting structure 2 to the center of the mounting base 1 is greater than the distance from the second stator mounting structure 3 to the center of the mounting base 1. The first stator mounting structure 2 is used to mount the stator of an external stator direct drive motor, and the second stator mounting structure 3 is used to mount the stator of an internal stator direct drive motor. The first stator mounting structures 2 are distributed circumferentially along the mounting base 1, while the second stator mounting structure 3 is integrally arranged circumferentially along the mounting base 1.

[0038] In this embodiment, by setting the first stator mounting structure 2 and the second stator mounting structure 3, the direct drive motor can be flexibly installed according to actual needs when it is installed, without the need to process different motor mounting bases 1, thus improving the versatility of the motor mounting base 1.

[0039] In this embodiment, the mounting base 1 serves as a basic support component, and its structural design meets the overall fixing requirements of the direct-drive motor. Furthermore, the first stator mounting structure 2 adopts a circumferentially distributed arrangement to adapt to the stator mounting requirements of external stator motors, achieving uniform stress distribution through discretely distributed fixed points. The second stator mounting structure 3 adopts a circumferentially integral arrangement, forming a continuous annular support surface to adapt to the stator mounting requirements of internal stator motors.

[0040] As a preferred embodiment, the first stator mounting structure 2 is distributed at equal angular intervals, and the second stator mounting structure 3 is configured as a ring-shaped boss structure, thereby ensuring the positioning accuracy and support strength of the stator mounting.

[0041] The distance from the center of the first stator mounting structure 2 to the center of the mounting base 1 is greater than the distance from the center of the second stator mounting structure 3 to the center of the mounting base 1. This spatial relationship allows the outer stator mounting area to be naturally located in the outer area of ​​the mounting base 1, while the inner stator mounting area is located in the inner area, thus avoiding structural interference and spatial conflict and providing a basis for the interchangeable installation of the two motor types.

[0042] In this embodiment, the above-described structural design effectively solves the problem of low versatility of motor mounting bases. By setting a distributed first stator mounting structure 2 and an integral second stator mounting structure 3 on the same mounting base 1, and using the distance difference to distinguish the installation space, a single mounting base can flexibly adapt to both external stator and internal stator direct drive motors, avoiding the defect of needing to replace the mounting base due to different motor types, thereby improving the versatility and applicability of the mounting base.

[0043] In this embodiment, the mounting base 1 has a mounting surface 11. The first stator mounting structure 2 and the second stator mounting structure 3 both protrude from the mounting surface 11, meaning there is a height difference between the first stator mounting structure 2 and the second stator mounting structure 3 and the mounting surface 11. This provides mounting space for the stator, achieving a avoidance effect and preventing mutual interference. Simultaneously, the first stator mounting structure 2 is lower than the second stator mounting structure 3.

[0044] In this embodiment, by using the mounting surface 11 as a height reference plane, both the first stator mounting structure 2 and the second stator mounting structure 3 protrude from this reference, thereby providing a clear spatial positioning for the installation of the outer stator and the inner stator. At the same time, by setting the first stator mounting structure 2 lower than the second stator mounting structure 3, the outer stator mounting position is relatively low while the inner stator mounting position is relatively high. This matches the physical layout characteristics of the outer stator and the inner stator in the motor, effectively avoiding spatial conflicts caused by the height overlap of the two stators during installation, ensuring that the outer stator and the inner stator can be firmly fixed separately without affecting each other, and ultimately realizing universal support for different types of direct drive motors from a single mounting bracket.

[0045] In this embodiment, a ring-shaped protrusion 14 protrudes from the mounting surface 11 on the mounting base 1. The protrusion 14, the first stator mounting structure 2, and the second stator mounting structure 3 are concentrically arranged. The second stator mounting structure 3 is arranged around the outer peripheral wall of the protrusion 14 and is lower than the protrusion 14.

[0046] In this embodiment, the concentric setting can be understood as the convex ridge 14, the first stator mounting structure 2 and the second stator mounting structure 3 sharing the same central axis. The concentricity can be ensured by mold forming or machining, with the aim of strictly aligning the mounting positions of the outer stator and the inner stator.

[0047] In this embodiment, the second stator mounting structure 3 relies on the rigid outer wall of the protruding rib 14 to enhance the local resistance to deformation and make the installation force smoothly transmitted along the circumference. The design of the second stator mounting structure 3 being lower than the protruding rib 14 makes the protruding rib 14 form a limiting surface, preventing tools or foreign objects from directly impacting the second stator mounting structure 3, while reducing the impact of external interference on the installation accuracy.

[0048] In this embodiment, the mounting base 1 includes an integrally formed first mounting portion 12 and a second mounting portion 13. The first mounting portion 12 is located on the outer periphery of the second mounting portion 13, meaning the second mounting portion 13 is closer to the rotor shaft 4 than the first mounting portion 12. The first stator mounting structure 2 is located close to the first mounting portion 12, and the second stator mounting structure 3 is located close to the second mounting portion 13. Preferably, the first stator mounting structure 2 is located on the first mounting portion 12, and the second stator mounting structure 3 is located on the second mounting portion 13. Through this arrangement, the first stator mounting structure 2 and the first mounting portion 12 can form a single unit, and the second stator mounting structure 3 and the second mounting portion 13 can form a single unit, thereby improving the strength of the first stator mounting structure 2 and the second stator mounting structure 3, reducing the possibility of damage to the first stator mounting structure 2 and the second stator mounting structure 3, and improving the stability of the direct drive motor after installation.

[0049] In this embodiment, the first stator mounting structure 2 protrudes from the first mounting portion 12 and forms a notch on the side of the mounting base 1 away from the mounting surface 11; the second stator mounting structure 3 protrudes from the second mounting portion 13.

[0050] In this embodiment, by dividing the mounting base 1 into a first mounting part 12 and a second mounting part 13 with clearly defined functional partitions, the first stator mounting structure 2 is located at a larger radius position to accurately match the installation requirements of the external stator motor, while the second stator mounting structure 3 is located at a smaller radius position to adapt to the compact installation of the internal stator motor.

[0051] In this embodiment, the first mounting part 12 is located on the outer periphery of the second mounting part 13, making full use of the radial space advantage to avoid installation interference and ensuring that the outer stator mounting area obtains sufficient structural strength. The notch formed by the first stator mounting structure 2 is based on the outer periphery layout design, which not only reduces local weight but also provides an assembly channel, facilitating the rapid positioning and fixing of the outer stator.

[0052] Through the above solution, this application effectively solves the problems of conflicting installation positions and mismatched strength requirements between external stator and internal stator motors, significantly improves the versatility of the mounting base, avoids the need to replace the mounting base with a special one due to different motor types, thereby simplifying the production process and reducing manufacturing costs.

[0053] Furthermore, the first mounting portion 12 and the second mounting portion 13 are spaced apart, and are connected by reinforcing ribs 5. In this embodiment, the first mounting portion 12, the second mounting portion 13, and the reinforcing ribs 5 are integrally formed, which improves the overall strength. Multiple reinforcing ribs 5 are provided, and are spaced apart along the circumference of the mounting base 1.

[0054] In this embodiment, the first stator mounting structure 2 is disposed at the connection between the first mounting part 12 and the reinforcing rib 5, and the second stator mounting structure 3 is disposed on the mounting surface 11 of the second mounting part 13.

[0055] Specifically, the first stator mounting structure 2 includes a first boss 21, which extends from the side of the mounting base 1 away from the mounting surface 11 until it protrudes from the mounting surface 11. The side of the first boss 21 near the first mounting portion 12 is fitted against the inner peripheral wall of the first mounting portion 12, and the side of the first boss 21 away from the first mounting portion 12 is connected to the end of the reinforcing rib 5. The side of the first boss 21 near the first mounting portion 12 is connected to the outer peripheral wall of the first mounting portion 12 by the reinforcing rib 5.

[0056] In this embodiment, the reinforcing ribs 5 improve the overall connection strength and stability, and also reinforce the first boss 21, thereby increasing the stress that the first boss 21 can withstand. Simultaneously, placing the first boss 21 on the peripheral wall of the first mounting portion 12 improves the overall structural compactness, reduces the occupied installation space, and thus increases the distance between the housing and the motor mounting structure, ensuring smooth installation of the direct-drive motor.

[0057] Furthermore, a support seat 6 is provided at the connection between the first boss 21 and the reinforcing rib 5. The support seat 6 increases the contact area between the reinforcing rib 5 and the first boss 21, further improving the connection strength and enhancing safety. Specifically, the support seat 6 extends from the end of the reinforcing rib 5 along the circumference of the reinforcing rib 5 and extends away from the reinforcing rib 5 to form an arc-shaped transition surface, thereby increasing the contact area.

[0058] In this embodiment, multiple first bosses 21 are provided, and each first boss 21 is spaced apart circumferentially along the mounting base 1. Each first boss 21 is provided with a first fixing part 22, which is used to fix the outer stator of the external stator type direct drive motor. In this embodiment, the first fixing part 22 is a threaded hole, and the outer stator of the external stator type direct drive motor is provided with corresponding holes. The outer stator of the external stator type direct drive motor and the first bosses 21 are connected and fixed by fasteners such as screws.

[0059] In this embodiment, the first boss 21 is also provided with a positioning part 23. The positioning part 23 is used to position the outer stator of the external stator direct drive motor to ensure that the holes and threaded holes on the outer stator of the external stator direct drive motor are aligned during installation. In this embodiment, the positioning part 23 can be a positioning post or a positioning hole.

[0060] When it is necessary to install an external stator direct drive motor, after connecting the rotor and the rotor shaft 4 on the mounting base 1, positioning is achieved through the positioning hole. When the external stator is sleeved on the rotor, the threaded hole on the first boss 21 is aligned with the hole on the external stator. Then, the external stator is connected to the mounting base 1 with screws, thereby achieving quick installation of the external stator.

[0061] In this embodiment, six first protrusions 21 are provided, and the six first protrusions 21 are arranged circumferentially and spaced apart along the first mounting portion 12. Preferably, the six first protrusions 21 are evenly spaced apart along the circumferential direction of the first mounting portion 12.

[0062] In this embodiment, the number of first protrusions 21 can be increased or decreased according to the actual situation. By setting enough first protrusions 21, sufficient connection strength can be provided for the installation of the outer stator.

[0063] In this embodiment, the first boss 21 is a block structure, and the first fixing part 22 is provided through the first boss 21 from the top to the bottom. The top of the first boss 21 is flat, which serves two purposes: firstly, it provides a carrier for processing the first fixing part 22; secondly, it increases the contact area with the outer stator. That is, the top of the first boss 21, as a contact surface, can play a supporting role and improve the stability of the outer stator installation.

[0064] In this embodiment, since the inner peripheral wall of the first mounting portion 12 is annular, the first boss 21 is generally arc-shaped to facilitate fitting with the inner peripheral wall of the first mounting portion 12. The curvature of the first boss 21 is the same as the curvature of the inner peripheral wall of the first mounting portion 12. This allows the side of the first boss 21 closest to the first mounting portion 12 to fit tightly against the inner peripheral wall of the first mounting portion 12, thereby ensuring connection strength.

[0065] In this embodiment, a protruding ridge 14 extends from the mounting surface 11 of the second mounting portion 13 onto the first mounting portion 12, and the protruding ridge 14 is disposed through the second mounting portion 13. The protruding ridge 14 has a hollow structure to mount the rotor shaft 4 of the direct drive motor.

[0066] In this embodiment, the second stator mounting structure 3 is an annular second boss 31. The second boss 31 protrudes from the central through hole of the mounting base 1 and extends a certain length radially from the outer peripheral wall of the protruding ridge 14 along the mounting base 1.

[0067] In this embodiment, the second stator mounting structure 3 includes a second fixing part 32, which is used to install the stator of the inner stator type direct drive motor. Multiple second fixing parts 32 are provided, and the second fixing parts 32 are spaced apart along the circumference of the second boss 31.

[0068] In this embodiment, the second fixing part 32 is a threaded hole. The stator of the inner stator direct drive motor is provided with a corresponding hole. The stator and the second boss 31 of the inner stator direct drive motor are connected by fasteners such as screws to achieve fixation.

[0069] When it is necessary to install an inner stator direct drive motor, align the holes on the inner stator and the threaded holes on the second boss 31, connect the inner stator to the mounting base 1 with screws, and then connect the rotor to the rotor shaft 4 on the mounting base 1.

[0070] In this embodiment, the second boss 31 is cylindrical and is arranged around the protruding ridge 14. The second boss 31 is a solid structure. When the direct drive motor is working, the rotor shaft 4 at the center will generate a large torsional force. This design of the second boss 31 can improve the overall strength, allowing it to withstand greater stress and reducing the probability of damage.

[0071] In this embodiment, the second boss 31 and the first boss 21 are located at the same height. This ensures that the second boss 31 will not interfere when an external stator direct drive motor is installed. Similarly, the first boss 21 will not interfere when an internal stator direct drive motor is installed.

[0072] In this embodiment, when an external stator direct drive motor needs to be installed, after connecting the rotor and the rotor shaft 4 on the mounting base 1, positioning is achieved through the positioning holes. When the external stator is fitted onto the rotor, the threaded hole on the first boss 21 is aligned with the hole on the external stator. Then, the external stator is connected to the mounting base 1 using screws. When an internal stator direct drive motor needs to be installed, the hole on the internal stator and the threaded hole on the second boss 31 are aligned. The internal stator is connected to the mounting base 1 using screws, and then the rotor is connected to the rotor shaft 4 on the mounting base 1. In this way, two different direct drive motors can be installed using a single motor mounting base 1.

[0073] In this embodiment, the direct drive motor mounting structure of the drum washing machine integrates the first stator mounting structure 2 and the second stator mounting structure 3 on the same mounting base 1. The first stator mounting structure 2 is distributed circumferentially along the mounting base 1 with a relatively large distance from the center, while the second stator mounting structure 3 is integrally arranged circumferentially with a relatively small distance from the center. This achieves compatible installation of different types of direct drive motors, improving the versatility of the mounting base. Specifically, this design allows the stator of an external stator direct drive motor to be fixed via the first stator mounting structure 2, while the stator of an internal stator direct drive motor can be fixed via the second stator mounting structure 3, effectively avoiding the problem of specialized mounting bases due to differences in motor type.

[0074] In this embodiment, the drum washing machine is equipped with the aforementioned direct drive motor mounting structure, and the drum washing machine has the same beneficial effects as the aforementioned direct drive motor mounting structure. Depending on actual needs, an external stator direct drive motor or an internal stator direct drive motor can be flexibly installed without the need for re-processing the motor mounting bracket, thus improving installation flexibility and adaptability.

[0075] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A direct drive motor mounting structure for a drum washing machine, characterized in that: include Mounting bracket (1), one side is used to mount a direct drive motor; The first stator mounting structure (2) is distributed circumferentially along the mounting base (1); The second stator mounting structure (3) is integrally arranged along the circumference of the mounting base (1); The first stator mounting structure (2) is lower than the second stator mounting structure (3); The distance from the first stator mounting structure (2) to the center through hole of the mounting base (1) is greater than the distance from the second stator mounting structure (3) to the center through hole of the mounting base (1).

2. The direct drive motor mounting structure of the drum washing machine according to claim 1, characterized in that: The first stator mounting structure (2) includes a plurality of first bosses (21); Each first protrusion (21) is spaced apart along the circumference of the mounting base (1); The second stator mounting structure (3) is an annular second boss (31); The second boss (31) protrudes from the center through hole of the mounting base (1).

3. The direct drive motor mounting structure of the drum washing machine according to claim 2, characterized in that: The mounting base (1) is formed with a mounting surface (11); Both the first stator mounting structure (2) and the second stator mounting structure (3) protrude from the mounting surface (11); The mounting base (1) has an annular protrusion (14) protruding from the mounting surface (11); The protruding ridge (14), the first stator mounting structure (2), and the second stator mounting structure (3) are concentrically arranged; The second stator mounting structure (3) is arranged around the outer periphery of the protruding rib (14); The second stator mounting structure (3) is lower than the protrusion (14).

4. The direct drive motor mounting structure of the drum washing machine according to claim 3, characterized in that: The mounting base (1) includes an integrally formed first mounting part (12) and a second mounting part (13); The first mounting part (12) is located on the outer periphery of the second mounting part (13); The first stator mounting structure (2) protrudes from the first mounting portion (12) and forms a notch on the side of the mounting base (1) away from the mounting surface (11); The second stator mounting structure (3) protrudes from the second mounting part (13).

5. The direct drive motor mounting structure of the drum washing machine according to claim 4, characterized in that: The first mounting part (12) and the second mounting part (13) are provided at intervals; The first mounting part (12) and the second mounting part (13) are connected by a reinforcing rib (5); The first stator mounting structure (2) is disposed between the first mounting part (12) and the reinforcing rib (5); The second stator mounting structure (3) is disposed on the mounting surface (11) of the second mounting part (13) and is disposed near the end of the reinforcing rib (5).

6. The direct drive motor mounting structure of the drum washing machine according to claim 5, characterized in that: The side of the first boss (21) near the first mounting part (12) is fitted to the inner peripheral wall of the first mounting part (12); The first boss (21) is connected to the reinforcing rib (5) on the side near the first mounting part (12).

7. The direct drive motor mounting structure of the drum washing machine according to claim 5, characterized in that: A support seat (6) is provided at the connection between the first boss (21) and the reinforcing rib (5); The support (6) extends from the end of the reinforcing rib (5) away from the reinforcing rib (5) to form an arc-shaped transition surface.

8. The direct drive motor mounting structure of the drum washing machine according to any one of claims 2-7, characterized in that: Each first boss (21) is provided with a first fixing part (22) for fixing the outer stator; At least two of the first bosses (21) are provided with positioning parts (23) for positioning the external stator.

9. The direct drive motor mounting structure of a drum washing machine according to any one of claims 2-7, characterized in that: The second boss (31) is provided with a plurality of second fixing parts (32) for fixing the inner stator; Each of the second fixing parts (32) is arranged at circumferential intervals along the second boss (31).

10. A drum washing machine, comprising an outer drum, characterized in that: The outer drum is equipped with a direct drive motor mounting structure for a drum washing machine as described in any one of claims 1-9.

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