Axial coreless low-resistance permanent magnet motor

Abstract

The utility model relates to the field of permanent magnet motors, and discloses an axial coreless low-resistance permanent magnet motor which comprises a rotating assembly, the rotating assembly comprises a rotating shaft, the outer wall of the rotating shaft is fixedly connected with a shell assembly, the shell assembly comprises a first protective shell, and the right end of the first protective shell is provided with a first supporting ring. The first supporting ring is rotationally connected to the outer wall of the rotating shaft, a stator assembly is arranged on the outer wall of the first supporting ring and comprises a first stator, the first stator is fixedly connected to the outer wall of the first supporting ring, a fixing sleeve is fixedly connected to the position, close to the right end, of the outer wall of the rotating shaft, and a fixing ring is fixedly connected to the outer wall of the fixing sleeve. According to the invention, the disc-shaped rotor is used for replacing a traditional iron core, and meanwhile, the disc-shaped stator is used for replacing a traditional round sleeve-shaped stator, so that the direction of a magnetic field can be changed, and meanwhile, the direction of cutting the magnetic induction lines can be changed, and therefore, the cutting of the magnetic induction lines can be completed under the condition that the iron core is not used.

Description

Technical Field

[0001] This application relates to the field of electric motors, and in particular, to an axial coreless low-resistance permanent magnet motor. Background Art

[0002] A permanent magnet motor is a common type of electric motor that can convert electrical energy into mechanical energy to drive other devices. According to the installation position of the permanent magnets, permanent magnet motors are divided into three categories: surface-mounted, inserted, and embedded. Among them, the embedded type is widely used because of its better safety and the ability to achieve higher overall speeds.

[0003] Most existing permanent magnet motors are equipped with iron cores inside. During the operation of the motor, the changing magnetic field of the magnets causes electromagnetic induction in the iron core, and the energy generated by the electromagnetic induction is absorbed by the iron core, resulting in the continuous vibration of the molecules inside the iron core material. This may lead to a decrease in the service life of the overall device. Therefore, an axial coreless low-resistance permanent magnet motor is proposed to solve the above problems. Utility Model Content

[0004] To make up for the above deficiencies, this application provides an axial coreless low-resistance permanent magnet motor, aiming to improve the problem in the prior art that "iron loss occurs in motors with iron cores during use, which may lead to a decrease in the service life of the overall device".

[0005] To achieve the above objective, this application adopts the following technical solutions:

[0006] An axial coreless low-resistance permanent magnet motor,

[0007] A housing assembly that supports and protects the internal structure of the motor;

[0008] A stator assembly that includes a first stator, a second stator, and a third stator. The first stator, the second stator, and the third stator each have a plurality of coils arranged circumferentially; the first stator, the second stator, and the third stator are fixedly spaced at equal intervals along their axes inside the housing assembly;

[0009] A rotating assembly that includes a rotating shaft, a first rotor, and a second rotor; the first rotor and the second rotor are respectively located in two gaps formed by the first stator, the second stator, and the third stator; permanent magnets are fixed at the end faces of the first rotor and the second rotor, and each permanent magnet is arranged separately opposite to each coil; the adjacent permanent magnets on the same end face of the first rotor or the second rotor have opposite polarities;

[0010] Among them, the rotating shaft passes through the axes of the first stator, the second stator, the third stator, the first rotor, and the second rotor, and the rotating shaft is fixedly connected to the first rotor and the second rotor. The output end of the rotating shaft extends out of the housing assembly.

[0011] Further, the housing assembly includes a first protective shell, a second protective shell, and a third protective shell;

[0012] The protective case one, the protective case two, and the protective case three are spliced in sequence to form a cavity; and an outlet for the extension of a rotating shaft is provided on the protective case one.

[0013] The support ring one, the connecting pipe, and the support ring two are fixed in the cavity, and the rotating shaft movably penetrates through the support ring one, the connecting pipe, and the support ring two and extends out through the outlet.

[0014] Furthermore, the stator one, the stator two, and the stator three are respectively fixedly connected to the protective case one, the protective case two, and the protective case three;

[0015] Connecting pipes are fixedly arranged on the outer peripheries of the stator one, the stator two, and the stator three;

[0016] The connecting wires of the coils of the stator one, the stator two, and the stator three extend out from separate connecting pipes.

[0017] Furthermore, support rings one and two are fixedly arranged on the adjacent end faces of the protective case one and the protective case three;

[0018] The inner rings of the stator one and the stator three are respectively sleeved on the outer rings of the support ring one and the support ring two, and the inner rings of the stator one and the stator three are fixedly connected to the outer rings of the support ring one and the support ring two.

[0019] Furthermore, the rotating assembly further includes a fixing sleeve, a fixing ring, and a connecting sleeve;

[0020] The fixing sleeve is fixedly sleeved on the outer periphery of the rotating shaft; the connecting sleeve is fixedly sleeved on the outer periphery of the fixing sleeve;

[0021] The connecting sleeve is located at the axis of the stator two that it movably penetrates through, and the connecting sleeve is located between the rotor one and the rotor two; wherein, the connecting sleeve is fixed to the rotor one and the rotor two.

[0022] Furthermore, a fixing ring is fixed on the outer wall of the fixing sleeve, the fixing ring is located at the left end of the rotor one, and the fixing ring fixes the rotor one.

[0023] The present application has the following beneficial effects:

[0024] 1. In the present application, by using a disc-shaped rotor to replace the traditional iron core and using a disc-shaped stator to replace the traditional circular sleeve-shaped stator, the direction of the magnetic field can be changed, and at the same time, the direction of cutting the magnetic induction line can also be changed. In this way, the cutting of the magnetic induction line can be completed without using an iron core, so no iron loss will occur during operation, and the overall device has a relatively high service life.

[0025] 2. In the present application, through modular setting, all components are set as replaceable parts. When one of the parts is damaged, the single part can be directly replaced, and the overall device is more convenient to repair. Description of the Drawings

[0026] Figure 1 This is a three-dimensional structure schematic diagram of the overall device in this application;

[0027] Figure 2 This is a schematic diagram of the three-dimensional structure split of the overall device in this application;

[0028] Figure 3 This is a schematic diagram of the three-dimensional structure installation of Rotor 1 and Rotor 2 in this application;

[0029] Figure 4 This is a left view schematic diagram of the three-dimensional structure of the protective case 3 in this application.

[0030] Legend description:

[0031] 1. Rotating assembly; 11. Rotating shaft; 12. Fixed sleeve; 13. Fixed ring; 14. Rotor 1; 15. Rotor 2; 16. Connecting sleeve;

[0032] 2. Housing assembly; 21. Protective case 1; 22. Protective case 2; 23. Protective case 3; 24. Support ring 1; 25. Connecting pipe; 26. Support ring 2;

[0033] 3. Stator assembly; 31. Stator 1; 32. Stator 2; 33. Stator 3; 34. Connecting wire. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0035] Considering the prior art, the energy generated by electromagnetic induction is absorbed by the iron core, resulting in continuous vibration of the internal molecules of the iron core material, and ultimately leading to a decrease in the service life of the overall device. In this application, by using a disc-shaped rotor to replace the traditional iron core and using a disc-shaped stator to replace the traditional circular sleeve-shaped stator at the same time, the magnetic field direction can be changed, and the direction of cutting the magnetic induction line can also be changed. In this way, the cutting of the magnetic induction line can be completed without using an iron core, so that no iron loss will occur during operation, and the overall device has a relatively high service life.

[0036] An axial ironless low-resistance permanent magnet motor includes a rotating assembly 1, a housing assembly 2, and a stator assembly 3;

[0037] Refer to Figure 1 , Figure 2 , the housing assembly 2 plays a role in supporting and protecting the internal structure of the motor.

[0038] The stator assembly 3 includes stator one 31, stator two 32, and stator three 33. Multiple coils are respectively arranged on stator one 31, stator two 32, and stator three 33 along their circumferences. Stator one 31, stator two 32, and stator three 33 are fixedly arranged at equal intervals along their axial directions inside the housing assembly 2.

[0039] The rotating assembly 1 includes a rotating shaft 11, rotor one 14, and rotor two 15. Rotor one 14 and rotor two 15 are respectively located in two gaps formed by stator one 31, stator two 32, and stator three 33. Separate permanent magnets are fixedly arranged at the end faces of rotor one 14 and rotor two 15 opposite to each coil. That is, the permanent magnets on the end faces of rotor one 14 and rotor two 15 and the coils on stator one 31 and stator two 32 are all circumferentially distributed, and the adjacent permanent magnets on the same end face of rotor one 14 or rotor two 15 have opposite polarities.

[0040] Among them, the rotating shaft 11 passes through the axes of stator one 31, stator two 32, stator three 33, rotor one 14, and rotor two 15. The rotating shaft 11 is fixedly connected to rotor one 14 and rotor two 15, and the output end of the rotating shaft 11 extends out of the housing assembly 2.

[0041] In summary, when stator one 31, stator two 32, and stator three 33 are energized, a magnetic field will be generated between stator one 31, stator two 32, and stator three 33. The magnetic field will drive rotor one 14 and rotor two 15 to rotate. When rotor one 14 and rotor two 15 rotate, they can drive the rotating shaft 11 to rotate. The output end of the rotating shaft 11 can output torque. The overall device does not need to be provided with an iron core during use, so iron loss will not be generated, and the overall device has a long service life.

[0042] Furthermore, the housing assembly 2 includes protective shell one 21, protective shell two 22, and protective shell three 23.

[0043] After protective shell one 21, protective shell two 22, and protective shell three 23 are spliced in sequence, a cavity is formed. And protective shell one 21 is provided with an outlet for the extension of the rotating shaft 11.

[0044] Support ring one 24, connecting pipe 25, and support ring two 26 are fixed inside the cavity. The rotating shaft movably passes through support ring one 24, connecting pipe 25, and support ring two 26 and extends out through the outlet.

[0045] Furthermore, stator one 31, stator two 32, and stator three 33 are respectively fixedly connected to protective shell one 21, protective shell two 22, and protective shell three 23.

[0046] Connecting pipes 25 are fixedly arranged on the outer circumferences of stator one 31, stator two 32, and stator three 33.

[0047] The connecting wires 34 of the coils of stator one 31, stator two 32, and stator three 33 extend out from separate connecting pipes 25.

[0048] Furthermore, support rings I (24) and support rings II (26) are fixedly arranged on the adjacent end faces of the first protective shell (21) and the third protective shell (23);

[0049] The inner rings of the first stator (31) and the third stator (33) are respectively sleeved on the outer rings of the support rings I (24) and support rings II (26), and the inner rings of the first stator (31) and the third stator (33) are fixedly connected to the outer rings of the support rings I (24) and support rings II (26).

[0050] Furthermore, the rotating assembly further includes a fixed sleeve (12), a fixed ring (13), and a connecting sleeve (16);

[0051] The fixed sleeve (12) is fixedly sleeved on the outer periphery of the rotating shaft; the connecting sleeve (16) is fixedly sleeved on the outer periphery of the fixed sleeve (12);

[0052] The connecting sleeve (16) is movably penetrated through the axis of the second stator (32), and the connecting sleeve (16) is located between the first rotor (14) and the second rotor (15); wherein, the connecting sleeve (16) is fixed to the first rotor (14) and the second rotor (15).

[0053] Since the connecting sleeve (16) fixedly connects the first rotor (14) and the second rotor (15) to the rotating shaft (11) through the fixed sleeve (12); therefore, the first rotor (14) and the second rotor (15) can drive the rotating shaft (11) to rotate after being subjected to magnetic force.

[0054] Furthermore, a fixed ring (13) is fixed to the outer wall of the fixed sleeve (12), the fixed ring (13) is located at the left end of the first rotor (14), and the fixed ring (13) fixes the first rotor (14).

[0055] Finally, it should be noted that the above are only the preferred embodiments of the present application and are not used to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An axial coreless low-resistance permanent magnet motor, characterized in that: include: A housing assembly (2) which supports and protects the internal structure of the motor; The stator assembly (3) comprises a stator 1 (31), a stator 2 (32) and a stator 3 (33), wherein each of the stator 1 (31), the stator 2 (32) and the stator 3 (33) is provided with a plurality of coils along its circumferential direction; the stator 1 (31), the stator 2 (32) and the stator 3 (33) are fixed inside the housing assembly (2) at equal intervals along their axial direction; A rotating assembly (1) comprises a rotating shaft (11), a rotor 1 (14) and a rotor 2 (15); the rotor 1 (14) and the rotor 2 (15) are respectively located in two gaps formed by a stator 1 (31), a stator 2 (32) and a stator 3 (33); a separate permanent magnet is fixed at the end surface of the rotor 1 (14) and the rotor 2 (15) and is arranged at a position opposite to each coil; the adjacent permanent magnets on the same end surface of the rotor 1 (14) or the rotor 2 (15) have opposite polarities; The rotating shaft (11) passes through the axes of stator 1 (31), stator 2 (32), stator 3 (33), rotor 1 (14), and rotor 2 (15), the rotating shaft (11) is fixedly connected to rotor 1 (14), and rotor 2 (15), and the output end of the rotating shaft (11) extends out of the housing assembly (2).

2. The axial ironless low-resistance permanent magnet motor according to claim 1, characterized in that: The housing assembly (2) comprises a protective shell 1 (21), a protective shell 2 (22), and a protective shell 3 (23); The protective shell 1 (21), the protective shell 2 (22), and the protective shell 3 (23) are sequentially spliced ​​to form a cavity; and the protective shell 1 (21) is provided with an extension opening for the rotating shaft (11); Support ring one (24), connecting pipe (25), and support ring two (26) are fixed in the cavity, and the rotating shaft movably passes through support ring one (24), connecting pipe (25), and support ring two (26) and extends out through the extension port.

3. The axial ironless low-resistance permanent magnet motor according to claim 2, characterized in that: Stator 1 (31), stator 2 (32), and stator 3 (33) are fixedly connected to protective shell 1 (21), protective shell 2 (22), and protective shell 3 (23) respectively; The outer circumferences of stator 1 (31), stator 2 (32) and stator 3 (33) are all fixedly provided with connecting pipes (25); The connecting wires (34) of the coils of stator 1 (31), stator 2 (32) and stator 3 (33) extend from a separate connecting tube (25).

4. The axial ironless low-resistance permanent magnet motor according to claim 3, characterized in that: The end surfaces adjacent to the protective shell 1 (21) and the protective shell 3 (23) are fixedly provided with a support ring 1 (24) and a support ring 2 (26); The inner rings of stator one (31) and stator three (33) are respectively inserted into the outer rings of support ring one (24) and support ring two (26), and the inner rings of stator one (31) and stator three (33) are fixedly connected to the outer rings of support ring one (24) and support ring two (26).

5. The axial ironless low-resistance permanent magnet motor according to claim 4, characterized in that: The rotating assembly also includes a fixing sleeve (12), a fixing ring (13), and a connecting sleeve (16); The fixing sleeve (12) is fixedly sleeved on the outer circumference of the rotating shaft; the connecting sleeve (16) is fixedly sleeved on the outer circumference of the fixing sleeve (12); The connecting sleeve (16) is located at the axis of the stator 2 (32) and is movable and passes through the stator 2. The connecting sleeve (16) is located between the rotor 1 (14) and the rotor 2 (15). The connecting sleeve (16) is fixed to the rotor 1 (14) and the rotor 2 (15).

6. The axial ironless low-resistance permanent magnet motor according to claim 5, characterized in that: The outer wall of the fixing sleeve (12) is provided with a fixing ring (13), wherein the fixing ring (13) is located at the left end of the rotor one (14), and the fixing ring (13) fixes the rotor one (14).

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