Outer rotor radial and axial combined magnetic field motor structure

Abstract

The utility model provides an outer rotor radial and axial combined magnetic field motor structure, which comprises a rotatable casing, a support shaft, a stator seat, at least one axial stator-rotor group and a radial stator-rotor group, and is characterized in that the two ends of the support shaft are rotatably connected with the side walls of the two ends of the casing respectively; the supporting shaft penetrates through the stator seat and is fixedly connected with the stator seat; the axial stator-rotor group comprises an axial magnetic field stator and an axial magnetic field rotor; the radial stator-rotor set comprises a radial magnetic field stator and a radial magnetic field rotor, the radial magnetic field stator is fixedly arranged on the outer circumferential face of the stator base, and the radial magnetic field rotor is fixedly arranged on the outer side of the stator base in the radial direction of the stator base and located on the inner wall of the machine shell. According to the scheme, the axial magnetic field rotor and the radial magnetic field rotor are indirectly connected through the machine shell so as to achieve synchronous rotation of the axial magnetic field rotor and the radial magnetic field rotor, and compared with the mode that two rotors are directly connected in the prior art, the mode that the axial magnetic field rotor and the radial magnetic field rotor are indirectly connected through the machine shell is simpler.

Description

TECHNICAL FIELD

[0001] The utility model relates to permanent magnet motor technical field especially relates to a radial and axial combination magnetic field motor structure of outer rotor. BACKGROUND

[0002] Permanent magnet motors can be divided into two categories - radial flux motors and axial flux motors. Radial flux motors are more common and have been used for a long time, although axial flux motors are not new technology, but its use has only increased in the past twenty years, the difference between the two is that the magnetic flux direction is radial in the radial flux motor, while the magnetic flux direction is axial in the axial flux motor.

[0003] The patent with publication number CN114938120A discloses an axial-radial composite flux permanent magnet motor structure, which comprises a stator disc in the shape of a circular ring, a first outer rotor, a second outer rotor and an inner rotor, the first outer rotor and the second outer rotor are respectively arranged on the two sides of the stator disc, the first outer rotor and the second outer rotor are coaxially arranged with the stator disc, the inner rotor is coaxially arranged with the stator disc, and the inner rotor is connected with the first outer rotor and the second outer rotor respectively in cooperation with the stator disc. Among them, the first outer rotor comprises an outer rotor iron core and a first permanent magnet, the first permanent magnet is arranged on one side of the outer rotor iron core facing the stator disc, and the first permanent magnet is uniformly arranged in the circumferential direction; the first outer rotor and the second outer rotor are the same structure; the inner rotor comprises an inner rotor iron core and a second permanent magnet, and the second permanent magnet is arranged in the circumferential direction on the outer circle of the inner rotor iron core.

[0004] Since the first outer rotor and the second outer rotor each comprise a plurality of first permanent magnets uniformly arranged in the circumferential direction on one side of the outer rotor iron core facing the stator disc, and the inner rotor comprises a plurality of second permanent magnets arranged in the circumferential direction on the outer circle of the inner rotor iron core, it is difficult to connect the inner rotor with the first outer rotor and the second outer rotor respectively at both ends. UTILITY MODEL CONTENTS

[0005] Based on the problems existing in the prior art, the utility model aims to solve the technical problem that the inner rotor is difficult to connect with the first outer rotor and the second outer rotor respectively at both ends in the axial-radial composite flux permanent magnet motor structure of the prior art.

[0006] The utility model provides a radial and axial combination magnetic field motor structure of outer rotor, which comprises:

[0007] A rotatable casing;

[0008] A support shaft, both ends of which are rotatably connected to the end side walls of the casing;

[0009] A stator seat arranged inside the casing, the support shaft passes through the stator seat and is fixedly connected thereto;

[0010] At least one axial stator-rotor group, the axial stator-rotor group comprising an axial magnetic field stator and an axial magnetic field rotor, the axial magnetic field stator being fixedly arranged at an end face of the stator base, and the axial magnetic field rotor being fixedly arranged at an inner wall of the casing opposite to the axial magnetic field stator;

[0011] A radial stator-rotor group, comprising a radial magnetic field stator and a radial magnetic field rotor, the radial magnetic field stator being fixedly arranged at an outer circumferential surface of the stator base, and the radial magnetic field rotor being fixedly arranged at an outer side of the stator base along a radial direction of the stator base and located at the inner wall of the casing.

[0012] According to an embodiment of the utility model, the stator base comprises a stator support and a stator compression ring which are coaxially arranged and detachably connected, and the support shaft passes through the stator support and is fixedly connected therewith.

[0013] An outer circumferential surface of one end of the stator support away from the stator compression ring extends radially outward to form a stopper, and the radial magnetic field stator is clamped between the stopper and the stator compression ring.

[0014] According to an embodiment of the utility model, the radial magnetic field stator comprises a first stator core and a first stator winding arranged on the first stator core, and the first stator core is clamped between the stopper and the stator compression ring.

[0015] According to an embodiment of the utility model, the axial magnetic field stator comprises a second stator core and a second stator winding arranged on the second stator core, and the second stator core is fixedly arranged at the end face of the stator base.

[0016] According to an embodiment of the utility model, the end face of the stator base is recessed inward to form a recess, and the second stator core is detachably fixedly arranged in the recess.

[0017] According to an embodiment of the utility model, two axial stator-rotor groups are arranged, and the two axial stator-rotor groups are symmetrically distributed on two sides of the stator base.

[0018] According to an embodiment of the utility model, the outer rotor radial and axial combined magnetic field motor structure further comprises bearings, and two ends of the support shaft are rotatably connected with two end side walls of the casing through the bearings.

[0019] According to an embodiment of the utility model, the casing comprises a casing main body and a cover, one end of the casing main body is provided with a first opening, and the cover is detachably fixedly arranged at the first opening; and two ends of the support shaft are rotatably connected with the casing main body and the cover, respectively.

[0020] According to an embodiment of the utility model, the shell main body and the cover recess respectively to one side away from each other, to form the bearing chamber for installing the bearing.

[0021] According to an embodiment of the utility model, the outer rotor radial and axial combined magnetic field motor structure further includes an end cover, a side wall of the bearing chamber is provided with a second opening, and the end cover is detachably fixed and installed at the second opening.

[0022] The utility model discloses a beneficial effect is:

[0023] The utility model provides a kind of outer rotor radial and axial combined magnetic field motor structure, the axial magnetic field rotor and the radial magnetic field rotor are fixedly arranged in the inner wall of the shell, to be rotatable by the shell driven jointly, compared with the prior art directly connecting two rotors, the axial magnetic field rotor and the radial magnetic field rotor are indirectly connected by the shell, and the mode is simpler. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments or prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor according to these drawings.

[0025] Figure 1 It is a kind of outer rotor radial and axial combined magnetic field motor structure schematic diagram provided by the utility model embodiment;

[0026] Reference signs: 1-shell;11-shell main body;12-cover;2-supporting shaft;3-stator base;31-stator support;310-stop portion;311-cavity;32-stator compression ring;4-axial stator-rotor group;41-axial magnetic field stator;411-second stator core;412-second stator winding;42-axial magnetic field rotor;5-radial stator-rotor group;51-radial magnetic field stator;511-first stator core;512-first stator winding;52-radial magnetic field rotor;6-bearing;60-bearing chamber;7-end cover. DETAILED DESCRIPTION

[0027] The following description of each embodiment is with reference to the additional drawings, to illustrate specific embodiments that the utility model can be used to implement.

[0028] The utility model provides a kind of outer rotor radial and axial combined magnetic field motor structure, its structure is as Figure 1As shown, including rotatable shell 1, support shaft 2, stator seat 3, at least one axial stator-rotor group 4 and radial stator-rotor group 5, wherein the two ends of the support shaft 2 are rotatably connected with the two end side walls of the shell 1 respectively; The stator seat 3 is arranged in the interior of the shell 1, and the support shaft 2 passes through the stator seat 3 and is fixedly connected therewith; The axial stator-rotor group 4 comprises an axial magnetic field stator 41 and an axial magnetic field rotor 42, the axial magnetic field stator 41 is fixedly arranged on the end face of the stator seat 3, and the axial magnetic field rotor 42 is fixedly arranged on the inner wall of the shell 1 opposite to the axial magnetic field stator 41; The radial stator-rotor group 5 comprises a radial magnetic field stator 51 and a radial magnetic field rotor 52, the radial magnetic field stator 51 is fixedly arranged on the outer circumferential surface of the stator seat 3, and the radial magnetic field rotor 52 is fixedly arranged on the outer side of the stator seat 3 along the radial direction of the stator seat 3 and located on the inner wall of the shell 1.

[0029] The axial magnetic field rotor 42 and the radial magnetic field rotor 52 are fixedly arranged on the inner wall of the shell 1, so that they can be driven by the shell 1 (the shell 1 can be driven by an external rotary driving device) to rotate, and compared with the prior art of directly connecting two rotors, the indirect connection mode between the axial magnetic field rotor 42 and the radial magnetic field rotor 52 through the shell 1 is simpler.

[0030] Please continue to refer to Figure 1 Preferably, in the embodiment, the axial stator-rotor group 4 is provided with two, and the two axial stator-rotor groups 4 are symmetrically distributed on the two sides of the stator seat 3.

[0031] Specifically, the stator seat 3 comprises a stator support 31 and a stator compression ring 32 arranged coaxially and detachably connected, and the support shaft 2 passes through the stator support 31 and is fixedly connected therewith; Specifically, the stator support 31 and the stator compression ring 32 can be detachably connected through screws;

[0032] The outer circumferential surface of the end of the stator support 31 away from the stator compression ring 32 extends radially outward to form a stop portion 310, and the radial magnetic field stator 51 is clamped between the stop portion 310 and the stator compression ring 32.

[0033] It can be understood that by arranging the stator compression ring 32 detachably connected with the stator support 31 to clamp the radial magnetic field stator 51 between the stop portion 310 and the stator compression ring 32, the radial magnetic field stator 51 can be quickly fixed, and the installation and disassembly of the radial magnetic field stator 51 are facilitated.

[0034] As a specific example, the radial magnetic field stator 51 comprises a first stator core 511 and a first stator winding 512 arranged on the first stator core 511, and the first stator core 511 is clamped between the stop portion 310 and the stator pressing ring 32. The axial magnetic field stator 41 comprises a second stator core 411 and a second stator winding 412 arranged on the second stator core 411, and the second stator core 411 is fixedly arranged on the end face of the stator base 3.

[0035] Further, the end face of the stator base 3 is recessed towards the inside to form a recessed cavity 311, and the second stator core 411 is detachably fixedly arranged in the recessed cavity 311.

[0036] It can be understood that, in order to achieve that the radial magnetic field stator 51 is clamped between the stop portion 310 and the stator pressing ring 32, it is required that the stator base 3 has a considerable thickness, and by recessing the end face of the stator base 3 towards the inside to form a recessed cavity 311 for mounting the second stator core 411, it is possible to avoid that the weight of the stator base 3 is excessively increased due to the stator base 3 having a relatively large thickness, it is possible to reduce the self-weight of the stator base 3, and it is possible to improve the compactness of the motor structure.

[0037] According to an embodiment of the utility model, in order to achieve that the two ends of the support shaft 2 are respectively rotatably connected with the two end side walls of the casing 1, the outer rotor radial and axial combined magnetic field motor structure further comprises a bearing 6, and the two ends of the support shaft 2 are respectively rotatably connected with the two end side walls of the casing 1 through the bearing 6.

[0038] Further, the casing 1 comprises a casing main body 11 and a cover 12, one end of the casing main body 11 is provided with a first opening, and the cover 12 is detachably fixedly mounted at the first opening, which can facilitate the mounting of the related parts such as the support shaft 2, the stator base 3, the axial stator-rotor group 4 and the radial stator-rotor group 5 inside the casing 1, and the two ends of the support shaft 2 are respectively rotatably connected with the casing main body 11 and the cover 12.

[0039] Preferably, the casing main body 11 and the cover 12 are respectively recessed towards the sides away from each other to form a bearing chamber 60 for mounting the bearing 6.

[0040] It can be understood that the casing main body 11 and the cover 12 are respectively recessed towards the sides away from each other to form a bearing chamber 60 for mounting the bearing 6, and compared with directly mounting the bearing 6 in the inner cavity of the casing main body 11, it is possible to reduce the occupation of the inner space of the casing main body 11, so as to reduce the volume of the casing main body 11 and improve the compactness of the motor structure.

[0041] Further, the outer rotor radial and axial combined magnetic field motor structure further comprises an end cover 7, a second opening is formed in the side wall of the bearing chamber 60, and the end cover 7 is detachably fixedly installed at the second opening.

[0042] In summary, the outer rotor radial and axial combined magnetic field motor structure provided by the utility model, the axial magnetic field rotor 42 and the radial magnetic field rotor 52 are indirectly connected through the casing 1 to realize synchronous rotation of the axial magnetic field rotor 42 and the radial magnetic field rotor 52, compared with directly connecting two rotors in the prior art, the indirect connection mode between the axial magnetic field rotor 42 and the radial magnetic field rotor 52 through the casing 1 is simpler.

[0043] It should be noted that although the utility model is disclosed as above with specific embodiments, the above embodiments are not used to limit the utility model, and ordinary skilled in the art can make various changes and decorations without departing from the spirit and scope of the utility model, therefore the protection scope of the utility model is defined by the claim.

Claims

1. An outer rotor radial and axial combination magnetic field electric machine structure, characterized by, The application relates to a motor, which comprises the following parts: a rotatable casing (1); a support shaft (2) rotatably connected to the two end side walls of the casing (1); a stator base (3) arranged in the casing (1), wherein the support shaft (2) passes through the stator base (3) and is fixedly connected to the stator base (3); at least one axial stator-rotor group (4) comprising an axial magnetic field stator (41) fixedly arranged on the end face of the stator base (3) and an axial magnetic field rotor (42) fixedly arranged on the inner wall of the casing (1) opposite to the axial magnetic field stator (41); a radial stator-rotor group (5) comprising a radial magnetic field stator (51) fixedly arranged on the outer circumferential surface of the stator base (3) and a radial magnetic field rotor (52) fixedly arranged on the outer side of the stator base (3) along the radial direction of the stator base (3) and located on the inner wall of the casing (1).

2. A radial and axial combination magnetic field electric machine structure of outer rotor type according to claim 1, characterized in that, The stator base (3) comprises a stator support (31) coaxially arranged and detachably connected to a stator compression ring (32), wherein the support shaft (2) passes through the stator support (31) and is fixedly connected to the stator support (31); the outer circumferential surface of the end of the stator support (31) away from the stator compression ring (32) extends radially outward to form a stop portion (310), and the radial magnetic field stator (51) is clamped between the stop portion (310) and the stator compression ring (32).

3. The outer rotor radial and axial combination magnetic field electric machine structure according to claim 2, characterized in that, The radial magnetic field stator (51) comprises a first stator core (511) and a first stator winding (512) arranged on the first stator core (511), and the first stator core (511) is clamped between the stop portion (310) and the stator compression ring (32).

4. The outer rotor radial and axial combination magnetic field electric machine structure of claim 1, wherein The axial magnetic field stator (41) comprises a second stator core (411) and a second stator winding (412) arranged on the second stator core (411), and the second stator core (411) is fixedly arranged on the end face of the stator base (3).

5. A radial and axial combination magnetic field electric machine structure of outer rotor type according to claim 4, characterized in that, The end face of the stator base (3) is recessed inward to form a recessed cavity (311), and the second stator core (411) is detachably fixedly arranged in the recessed cavity (311).

6. The outer rotor radial and axial combination magnetic field electric machine structure of claim 1, wherein The axial stator-rotor group (4) is arranged in two, and the two axial stator-rotor groups (4) are symmetrically distributed on the two sides of the stator base (3).

7. The outer rotor radial and axial combination magnetic field electric machine structure of claim 1, wherein The motor further comprises bearings (6), and the two ends of the support shaft (2) are rotatably connected to the two end side walls of the casing (1) through the bearings (6).

8. A radial and axial combination magnetic field electric machine structure of outer rotor type according to claim 7, characterized in that, The casing (1) comprises a casing body (11) and a cover (12), one end of the casing body (11) is provided with a first opening, and the cover (12) is detachably fixedly arranged at the first opening; the two ends of the support shaft (2) are rotatably connected to the casing body (11) and the cover (12) respectively.

9. A radial and axial combination magnetic field electric machine structure of outer rotor type according to claim 8, characterized in that, The casing body (11) and the cover (12) are recessed towards the sides away from each other respectively to form bearing chambers (60) for mounting the bearings (6).

10. A radial and axial combination magnetic field electric machine structure of outer rotor type according to claim 9, characterized in that, Further comprising an end cover (7), a side wall of the bearing chamber (60) is provided with a second opening, and the end cover (7) is detachably fixedly installed at the second opening.

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