Stator and rotor assembly of motor and motor

Abstract

The utility model discloses a stator and rotor assembly of a motor and the motor, and relates to the technical field of motors. The stator and rotor assembly comprises a rotor module, a stator module surrounding the periphery of the rotor module and at least two bearings coaxially connected with the rotor module, and the at least two bearings are located at the same end of the rotor module. According to the stator and rotor assembly, the at least two bearings arranged at the same end of the rotor module on the stator and rotor assembly can be connected with the motor through the same connecting piece, so that the mounting positions of the at least two bearings can be kept consistent, and relative deflection between the rotor module and the stator module can be avoided; the concentricity between the rotor module and the stator module is effectively improved; meanwhile, more connecting pieces do not need to be arranged for the at least two bearings, the stator and rotor structure is effectively simplified, and the stator and rotor structure can be more conveniently installed in the motor.

Description

TECHNICAL FIELD

[0001] The application relates to the motor technical field, in particular to a motor stator-rotor assembly and a motor. BACKGROUND

[0002] The stator-rotor assembly is installed in the motor to provide driving force for the motor, and the magnetic field change between the rotor and the stator is realized through the relative rotation of the rotor and the stator, so that the driving force is generated through the change of the magnetic field. In actual application scenarios, bearings are installed on the rotating shaft of the rotor to improve the rotation stability of the rotor.

[0003] The existing stator-rotor assembly usually has two bearings installed on the rotating shaft, and the two bearings are located at the two ends of the rotor and can cooperate with each other to ensure that the rotor can rotate stably. However, the two bearings located at the two ends of the rotating shaft need to be connected to the motor through different connecting members, so that the installation positions of the two bearings are prone to deviation, and then the positions of the two ends of the rotating shaft are inconsistent, which greatly reduces the concentricity between the rotor and the stator, and causes the motor installed with the stator-rotor assembly to have poor performance. CONTENT OF THE UTILITY MODEL

[0004] An object of the application is to overcome the deficiencies of the prior art and provide a stator-rotor assembly with good concentricity.

[0005] The application provides a stator-rotor assembly adopting the following technical scheme:

[0006] The stator-rotor assembly comprises a rotor module, a stator module surrounding the side of the rotor module, and at least two bearings coaxially connected to the rotor module, wherein the at least two bearings are located at the same end of the rotor module.

[0007] By adopting the above technical scheme, the at least two bearings arranged at the same end of the rotor module can be connected to the motor through the same connecting member, so that the installation positions of the at least two bearings can remain consistent, thereby avoiding the relative deflection between the rotor module and the stator module, and effectively improving the concentricity between the rotor module and the stator module. Meanwhile, more connecting members do not need to be arranged for the at least two bearings, thereby effectively simplifying the stator-rotor structure, and enabling the stator-rotor structure to be more conveniently installed in the motor.

[0008] Another object of the application is to provide a motor.

[0009] The application provides a motor adopting the following technical scheme:

[0010] The motor comprises a motor body, and further comprises a rotor-stator assembly as described above. The motor body is provided with a first mounting module and a second mounting module. The second mounting module is arranged concentrically around the first mounting module. The rotor module is coaxially mounted on the first mounting module, and the stator module is coaxially mounted on the second mounting module.

[0011] By adopting the technical scheme, the rotor module and the stator module can be coaxially mounted on the concentric first mounting module and second mounting module respectively, and the concentricity between the rotor module and the stator module is effectively improved.

[0012] In a specific implementation, the motor body is provided with a first mounting groove for accommodating the rotor-stator assembly. The first mounting module and the second mounting module are arranged on the groove bottom surface of the first mounting groove and are arranged concentrically with the first mounting groove.

[0013] By adopting the technical scheme, the rotor-stator assembly can be accommodated in the first mounting groove, and damage of the rotor-stator assembly caused by direct contact with the external environment is effectively avoided.

[0014] In a specific implementation, the first mounting module comprises a first mounting seat and a second mounting groove arranged concentrically on the first mounting seat. The rotor module comprises a rotating shaft and a rotor coaxially sleeved on the rotating shaft. The rotating shaft is coaxially inserted into the second mounting groove.

[0015] By adopting the technical scheme, the rotor module can be coaxially mounted on the first mounting seat, and the concentricity between the rotor module and the second mounting module is improved, thereby effectively improving the concentricity between the rotor module and the stator module.

[0016] In a specific implementation, the second mounting module comprises a plurality of second mounting seats arranged at intervals around the circumferential direction of the first mounting module. The plurality of second mounting seats are respectively supported on one end of the circumferential side of the stator module.

[0017] By adopting the technical scheme, the stator module can improve the concentricity between the stator module and the first mounting module through the plurality of second mounting seats, thereby effectively improving the concentricity between the stator module and the rotor module.

[0018] In a specific implementation, a plurality of third mounting seats are arranged at intervals around the circumferential direction of the stator module on one end of the circumferential side of the stator module. The plurality of third mounting seats correspond to the plurality of second mounting seats one by one, and the corresponding third mounting seats and second mounting seats are in positive position connection.

[0019] By adopting the technical scheme, the stator module can be coaxially connected with the second installation module through the butt joint of the third installation seat and the second installation seat, the concentricity between the stator module and the first installation module is effectively improved, and the concentricity between the stator module and the rotor module is further improved.

[0020] In a specific implementation, a third installation groove is formed in the second installation seat, the third installation groove is in an L shape and includes a first groove wall and a second groove wall perpendicular to each other, and the third installation seat is carried on the first groove wall and abuts against the second groove wall.

[0021] By adopting the technical scheme, the first groove wall and the second groove wall can limit the third installation seat, the third installation seat can be accurately butted with the second installation seat, and the concentricity between the stator module and the rotor module can be further improved.

[0022] In summary, the present application has at least one of the following beneficial technical effects:

[0023] 1. The at least two bearings arranged at the same end of the rotor module can be connected with the motor through the same connecting piece, the installation positions of the at least two bearings can be kept consistent, the relative deflection between the rotor module and the stator module can be avoided, and the concentricity between the rotor module and the stator module is effectively improved.

[0024] 2. More connecting pieces do not need to be arranged for the at least two bearings, the stator-rotor structure is effectively simplified, and the stator-rotor structure can be more conveniently installed in the motor.

[0025] 3. The rotor module and the stator module can be coaxially installed on the concentric first installation module and second installation module, and the concentricity between the rotor module and the stator module is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is an axial sectional view of a stator-rotor assembly in Embodiment 1 of the present application.

[0027] Figure 2 is a three-dimensional structural schematic view of a motor in Embodiment 2 of the present application.

[0028] Figure 3 is a three-dimensional structural schematic view of a motor body in Embodiment 2 of the present application.

[0029] REFERENCE SIGNS:

[0030] 1, rotor module; 11, rotating shaft; 12, rotor; 2, stator module; 3, bearing; 4, motor body; 5, first mounting module; 51, first mounting seat; 52, second mounting groove; 6, second mounting module; 61, second mounting seat; 7, first mounting groove; 8, third mounting seat; 9, third mounting groove; 91, first groove wall; 92, second groove wall; 10, bolt. DETAILED DESCRIPTION

[0031] The application will be further described in detail below with reference to the accompanying drawings.

[0032] Example 1: see Figure 1 shown, wherein a stator-rotor assembly is shown, comprising a rotor module 1, a stator module 2 surrounding the periphery of the rotor module 1, and two bearings 3 coaxially connected with the rotor module 1, wherein the rotor module 1 comprises a rotating shaft 11 and a rotor 12 coaxially sleeved on the rotating shaft 11, the two bearings 3 are sleeved on the rotating shaft 11 and located at the same end of the rotor 12, and the stator module 2 surrounds the periphery of the rotor 12.

[0033] In this way, the two bearings 3 arranged at the same end of the rotor 12 can form a single-face cantilever structure, which can be connected with the motor through a connecting piece, so that the installation positions of the two bearings 3 can be kept consistent, thereby avoiding relative deflection between the rotating shaft 11 and the stator module 2, effectively improving the concentricity between the rotor 12 and the stator module 2; at the same time, more connecting pieces are not needed to be arranged, effectively simplifying the stator-rotor structure, so that it can be more conveniently installed in the motor.

[0034] Example 2: see Figures 2-3 shown, wherein a motor is shown, comprising a motor body 4 and the stator-rotor assembly in example 1, the motor body 4 is provided with a first mounting groove 7 on the side for accommodating the stator-rotor assembly, the groove bottom surface of the first mounting groove 7 is concentrically provided with a first mounting module 5 and a second mounting module 6, the second mounting module 6 surrounds the periphery of the first mounting module 5 and is concentrically arranged with the first mounting module 5, the rotor module 1 is coaxially installed on the first mounting module 5, and the stator module 2 is coaxially installed on the second mounting module 6. The rotor module 1 and the stator module 2 can be coaxially installed on the concentric first mounting module 5 and the second mounting module 6, respectively, effectively improving the concentricity between the rotor module 1 and the stator module 2, thereby improving the performance of the motor.

[0035] In the embodiment, the first mounting module 5 comprises a first mounting base 51, a second mounting groove 52 concentrically arranged on the first mounting base 51, the rotating shaft 11 is coaxially arranged in the second mounting groove 52, and the two bearings 3 are arranged in the second mounting groove 52, and the rotor 12 is located outside the second mounting groove 52. The rotor 12 can be coaxially mounted on the first mounting base 51, and the first mounting base 51 is concentrically arranged with the second mounting module 6, that is, the rotor 12 and the second mounting module 6 can have a high concentricity, and the stator module 2 is coaxially mounted on the second mounting module 6, so that the concentricity between the rotor 12 and the stator module 2 can be effectively improved.

[0036] In the embodiment, the second mounting module 6 comprises three second mounting bases 61 which are arranged at intervals around the circumference of the first mounting base 51, and the three second mounting bases 61 are respectively supported on one end of the stator module 2. The stator module 2 and the second mounting module 6 formed by the three second mounting bases 61 are coaxially arranged, and the second mounting module 6 is concentrically arranged with the first mounting base 51, that is, the stator module 2 and the first mounting base 51 can have a high concentricity, and the rotor 12 is coaxially mounted on the first mounting base 51, so that the concentricity between the stator module 2 and the rotor 12 can be effectively improved.

[0037] In the embodiment, three third mounting bases 8 are arranged at intervals around the circumference of the stator module 2 on one end thereof, and the three third mounting bases 8 correspond to the three second mounting bases 61 one by one, and the corresponding third mounting base 8 and second mounting base 61 are positively connected by the bolt 10. A third mounting groove 9 is arranged on the second mounting base 61, and the third mounting groove 9 is L-shaped, comprising a first groove wall 91 and a second groove wall 92 which are perpendicular to each other, and the third mounting base 8 is arranged on the first groove wall 91 and the side portion thereof abuts against the second groove wall 92.

[0038] The stator module 2 can be coaxially connected with the second mounting module 6 through the connection of the third mounting base 8 and the second mounting base 61, and the first groove wall 91 and the second groove wall 92 can limit the third mounting base 8, so as to ensure that the third mounting base 8 can be accurately connected with the second mounting base 61, thereby ensuring that the stator module 2 and the second mounting module 6 can have a high concentricity, so as to further improve the concentricity between the stator module 2 and the rotor 12.

[0039] In the embodiment, the motor body 4 comprises a metal shell and an impeller (not shown in the figure) arranged in the metal shell, the metal shell is formed by pressure casting, the first mounting groove 7, the first mounting base 51 and the three second mounting bases 61 are formed by fine machining, so as to ensure the position accuracy of the first mounting groove 7, the first mounting base 51 and the three second mounting bases 61, thereby further improving the concentricity between the stator module 2 and the rotor 12.

[0040] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A stator-rotor assembly comprising a rotor module (1), a stator module (2) surrounding the rotor module (1), characterized in that: The stator-rotor assembly further comprises at least two bearings (3) coaxially connected with the rotor module (1), and the at least two bearings (3) are located at the same end of the rotor module (1).

2. A motor comprising a motor body (4), characterized in that: The motor further comprises the stator-rotor assembly as claimed in claim 1, and the motor body (4) is provided with a first mounting module (5) and a second mounting module (6), the second mounting module (6) is arranged around the periphery of the first mounting module (5) and coaxially with the first mounting module (5), the rotor module (1) is coaxially mounted on the first mounting module (5), and the stator module (2) is coaxially mounted on the second mounting module (6).

3. A motor as claimed in claim 2, wherein: The motor body (4) is provided with a first mounting groove (7) for accommodating the stator-rotor assembly, and the first mounting module (5) and the second mounting module (6) are arranged on the groove bottom surface of the first mounting groove (7) and coaxially arranged with the first mounting groove (7).

4. A motor as claimed in claim 2, wherein: The first mounting module (5) comprises a first mounting seat (51) and a second mounting groove (52) coaxially arranged on the first mounting seat (51), the rotor module (1) comprises a rotating shaft (11) and a rotor (12) coaxially sleeved on the rotating shaft (11), and the rotating shaft (11) is coaxially inserted into the second mounting groove (52).

5. A motor as claimed in claim 2, wherein: The second mounting module (6) comprises a plurality of second mounting seats (61) arranged in a circumferential interval around the first mounting module (5), and the plurality of second mounting seats (61) are respectively supported on one end of the stator module (2).

6. A motor according to claim 5, wherein: One end of the stator module (2) is provided with a plurality of third mounting seats (8) arranged in a circumferential interval around the stator module (2), and the plurality of third mounting seats (8) correspond to the plurality of second mounting seats (61) one by one, and the corresponding third mounting seat (8) and the second mounting seat (61) are in positive position connection.

7. A motor according to claim 6, wherein: The second mounting seat (61) is provided with a third mounting groove (9), and the third mounting groove (9) is L-shaped and comprises a first groove wall (91) and a second groove wall (92) perpendicular to each other, the third mounting seat (8) is carried on the first groove wall (91) and the side thereof abuts against the second groove wall (92).

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