Washing machine outer rotor DD motor housing structure

Abstract

The utility model provides a kind of washing machine outer rotor DD motor shell structure, DD motor shell includes seat shell, rotor shell and connecting frame, the seat shell is shaped with stator mounting seat and connecting plate, connecting plate rear portion is plane structure, to set stator mounting seat with connecting plate as foundation, stator is installed on stator mounting seat, rotor shell is set with seat shell, permanent magnet rotor is set in rotor shell, the outer side end face of rotor shell is shaped with axial connecting seat, connecting frame is installed on the axial connecting seat, connecting frame is connected with washing barrel axially, connecting frame is connected with rotor shell axially rigidly, and form the installation reference surface of washing barrel. Shell structure adopts stable seat shell structure, it is as the installation foundation structure of motor, the contact area of installation is big, can adapt to the stability requirement of large load work, rotor shell is part of rotor and rotates as a whole, can provide larger rotational inertia, provide the torque of motor, realize the requirement of large load.

Description

Technical Field

[0001] This utility model relates to a housing structure for an external rotor DD motor of a washing machine. Background Technology

[0002] DD (Direct Drive) motors are power devices that do not require speed regulation transmission structures, thus saving space. When installed in a washing machine, larger washing tubs can be accommodated, achieving better washing efficiency. External rotor motors have a rotor structure on the outside, with a large moment of inertia, making them suitable for larger load washing tubs. Therefore, DD motors for washing machines with large loads and large washing capacities require a good structural fixing device to achieve stable operation, thus requiring improvements to the motor housing structure. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned deficiencies in the prior art and to provide a housing structure for an external rotor DD motor of a washing machine.

[0004] The technical solution adopted by this utility model to solve the above problems is as follows: The DD motor housing includes a base shell, a rotor shell, and a connecting frame. The base shell is formed with a stator mounting seat and a connecting plate. The rear part of the connecting plate is a planar structure. The stator mounting seat is set on the connecting plate as a base. The stator is axially mounted on the stator mounting seat. The rotor shell is mated with the base shell. A permanent magnet rotor is set inside the rotor shell. An axial connecting seat is formed on the outer end face of the rotor shell. The connecting frame is axially mounted on the axial connecting seat. The connecting frame is axially connected to the washing tub. The connecting frame is rigidly connected to the rotor shell in the axial direction and forms the installation reference surface of the washing tub. The housing structure adopts a stable base shell structure, which serves as the installation base structure of the motor. It has a large installation contact area and can adapt to the stability requirements of high load operation. The rotor shell is part of the rotor and rotates as a whole, which can provide a large moment of inertia and provide the torque of the motor to meet the requirements of high load.

[0005] Furthermore, the housing is a one-piece molded base structure, with a rectangular mounting surface. The connecting plate has multiple mounting holes evenly arranged. The connecting plate is set on the base structure inside the washing machine and fixedly installed. Wire holes are provided on the side of the connecting plate, through which the motor's wires are connected to the stator windings on the stator mounting base. The housing has a large mounting contact surface, increasing the mounting base surface and improving stability. It also facilitates the threading and passage of motor wires and allows for the installation of circuit insulation protection structures, improving operational safety.

[0006] Furthermore, the outer circles of the stator mounting base of the rotor housing and the base housing are correspondingly formed. The front end face of the rotor housing is formed into a plane and is provided with axial connection holes. Multiple axial connection holes are distributed around the axis of the motor, serving as the basis for coaxial connection with the connecting plate. The rotor housing has multiple connection holes, forming a stable axial connection structure. The axial connection holes facilitate positioning and installation, and facilitate assembly.

[0007] Furthermore, the connecting plate has a motor connection side that abuts against the rotor housing and a tub connection side that connects to the washing tub. The motor connection side and the tub connection side are integrally formed. The outer diameter of the tub connection side corresponds to the outer diameter of the connection port of the washing tub. The diameter of the motor connection side is smaller than the diameter of the tub connection side, forming an installation gap. The installation gap accommodates the rotation allowance of the end of the connecting screw. The tub connection side and the washing tub are connected by screws. During installation, the connecting screw needs to be passed through the tub connection side first. After the connecting plate is fixed, a base position for pre-connection with the washing tub is formed, with an installation gap to facilitate the installation of the connecting screw.

[0008] Compared with the prior art, this utility model has the following advantages and effects: This design is an improvement on the motor structure of a washing machine. It adopts the form of a DD direct drive external rotor motor, which can reduce the space occupied by the motor reduction structure, and allow for a larger washing tub structure. By using the external rotor motor, it can achieve the working requirements of high torque, improve the washing efficiency of the washing machine, and improve product quality. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall external structure of the motor.

[0010] Figure 2 This is a schematic diagram of the structure in the separated state.

[0011] In the diagram: 1. Housing, 2. Rotor housing, 3. Connecting frame, 4. Stator mounting base, 5. Connecting plate, 6. Axial connecting base, 7. Mounting hole, 8. Wire hole, 9. Axial connecting hole, 10. Motor connecting side, 11. Bucket connecting side. Detailed Implementation

[0012] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0013] A washing machine outer rotor DD motor housing structure is disclosed. The DD motor housing includes a base shell 1, a rotor shell 2, and a connecting frame 3. The base shell 1 is formed with a stator mounting seat 4 and a connecting plate 5. The rear part of the connecting plate 5 is a planar structure. The stator mounting seat 4 is set on the connecting plate 5 as a base. A stator is axially mounted on the stator mounting seat 4. The rotor shell 2 is matched with the base shell 1. A permanent magnet rotor is set inside the rotor shell 2. An axial connecting seat 6 is formed on the outer end face of the rotor shell 2. The connecting frame 3 is axially mounted on the axial connecting seat 6. The connecting frame 3 is axially connected to the washing tub. The connecting frame 3 is axially rigidly connected to the rotor shell 2 and forms the installation reference surface of the washing tub.

[0014] The housing 1 is an integrally formed base structure, which is formed into a rectangular mounting surface. The connecting plate 5 has multiple mounting holes 7 arranged in a balanced manner. The connecting plate 5 is set on the basic structure inside the washing machine and fixedly installed. A wire hole 8 is provided on the side of the connecting plate 5. The motor wire is connected to the stator winding on the stator mounting base 4 through the wire hole 8.

[0015] The rotor housing 2 is formed correspondingly to the outer circle of the stator mounting base 4 of the housing 1. The front end face of the rotor housing 2 is formed into a plane and is provided with an axial connection hole 9. Multiple axial connection holes 9 are distributed around the axis of the motor. The axial connection holes 9 serve as the basis for coaxial connection with the connecting plate 5.

[0016] The connecting plate 5 has a motor connecting side 10 that docks with the rotor housing 2 and a tub connecting side 11 that connects with the washing tub. The motor connecting side 10 and the tub connecting side 11 are integrally formed. The outer diameter of the tub connecting side 11 corresponds to the outer diameter of the connection port of the washing tub. The diameter of the motor connecting side 10 is smaller than the diameter of the tub connecting side 11, forming an installation gap. The installation gap accommodates the rotation allowance of the end of the connecting screw. The tub connecting side 11 and the washing tub are connected by screws.

[0017] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary rather than restrictive in all respects. The scope of this invention is defined by the claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0018] Furthermore, it should be understood that although this specification describes the embodiments, not every embodiment contains only one independent technical solution. This description method is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A washing machine outer rotor DD motor housing structure, characterized by: The DD motor housing includes a base shell (1), a rotor shell (2), and a connecting frame (3). The base shell (1) is formed with a stator mounting seat (4) and a connecting plate (5). The rear part of the connecting plate (5) is a planar structure. The stator mounting seat (4) is set on the connecting plate (5) as a base. The stator is axially mounted on the stator mounting seat (4). The rotor shell (2) is aligned with the base shell (1). A permanent magnet rotor is set inside the rotor shell (2). An axial connecting seat (6) is formed on the outer end face of the rotor shell (2). The connecting frame (3) is axially mounted on the axial connecting seat (6). The connecting frame (3) is axially connected to the washing tub. The connecting frame (3) is axially rigidly connected to the rotor shell (2) and forms the installation reference surface of the washing tub.

2. A washing machine outer rotor DD motor housing structure according to claim 1 characterized in that: The housing (1) is an integrally formed base structure, which is formed into a rectangular mounting surface. The connecting plate (5) has multiple mounting holes (7) arranged in a balanced manner. The connecting plate (5) is set on the basic structure inside the washing machine and fixedly installed. A wire hole (8) is provided on the side of the connecting plate (5). The motor wire is connected to the stator winding on the stator mounting base (4) through the wire hole (8).

3. The washing machine external rotor DD motor housing structure according to claim 2, characterized in that: The rotor housing (2) is formed in correspondence with the outer circle of the stator mounting base (4) of the housing (1). The front end face of the rotor housing (2) is formed as a plane and is provided with an axial connection hole (9). Multiple axial connection holes (9) are distributed around the axis of the motor. The axial connection holes (9) serve as the basis for coaxial connection with the connecting plate (5).

4. A washing machine outer rotor DD motor housing structure according to claim 3, characterized by: The connecting plate (5) has a motor connecting side (10) that docks with the rotor housing (2) and a tub connecting side (11) that connects with the washing tub. The motor connecting side (10) and the tub connecting side (11) are integrally formed. The outer diameter of the tub connecting side (11) corresponds to the outer diameter of the connection port of the washing tub. The diameter of the motor connecting side (10) is smaller than the diameter of the tub connecting side (11) and forms an installation gap. The installation gap accommodates the rotation allowance of the end of the connecting screw. The tub connecting side (11) and the washing tub are connected by screws.

Images