CN218449643U - Disc type motor - Google Patents

Abstract

The present disclosure provides a disc motor, including: a housing; the rotating shaft is rotatably arranged in the shell; a stator, the stator comprising: the insulating frameworks are arranged on the inner wall of the shell at intervals along the circumferential direction of the rotating shaft, coils are wound on the insulating frameworks, and the axial directions of the coils are parallel to the axial direction of the rotating shaft; the rotor, the rotor cover is established in the pivot, is provided with the air gap between rotor and the stator, and the rotor includes: the plurality of magnets are sequentially arranged along the circumferential direction of the rotating shaft and distributed in a Halbach array; the encoder is arranged in the casing, and a detection shaft of the encoder is connected with the rotating shaft in a transmission manner. In this disclosed disk motor, through the setting of insulating skeleton, the multilayer of the coil of being convenient for is around establishing, makes the number of turns of stator unrestricted to improve disk motor's back electromotive force, in order to satisfy more powerful requirement, and then make disk motor's commonality stronger.

Description

Disc type motor

Technical Field

The present disclosure relates to the field of motor technology, and more particularly, to a disk motor.

Background

A disc motor is also called an Axial Permanent magnet motor (Axial-Flux-Permanent-magnet-magnetic motor, AFPMM), and compared with a radial Permanent magnet motor, a disc motor has the advantages of compact structure, high power density, good air-gap magnetic field distribution characteristics, and the like.

Disclosure of Invention

The present disclosure is directed to solving, at least in part, one of the technical problems in the related art.

To this end, it is an object of the present disclosure to provide a disc motor.

To achieve the above object, the present disclosure provides a disc motor, including: a housing; the rotating shaft is rotatably arranged in the shell; a stator, the stator comprising: the insulating frameworks are arranged on the inner wall of the shell, coils are wound on the insulating frameworks, and the axial directions of the coils are parallel to the axial direction of the rotating shaft; the rotor, the rotor cover is established in the pivot, the rotor with be provided with the air gap between the stator, the rotor includes: the magnets are sequentially arranged along the circumferential direction of the rotating shaft and distributed in a Halbach array; the encoder is arranged in the casing, and a detection shaft of the encoder is connected with the rotating shaft in a transmission way.

Optionally, an annular cavity is arranged on the inner wall of the casing, the axial direction of the annular cavity coincides with the axial direction of the rotating shaft, the rotor is arranged on one side of the annular cavity, and the plurality of insulating frameworks are arranged in the annular cavity along the circumferential direction of the rotating shaft; the stator further includes: and the insulating pouring sealing layer is filled between the insulating framework and the wall of the annular cavity, and an annular opening is formed in one side, close to the rotor, of the insulating pouring sealing layer.

Optionally, the insulating pouring layer is poured by epoxy resin.

Optionally, the housing includes: the casing, the pivot rotates to be set up in the casing, the encoder sets up in the casing, the casing includes: front and rear ends in opposite positions; the front end cover is arranged at the front end of the shell, the annular cavity is arranged on the inner wall of the front end cover, and the rotor is positioned at one end of the shell close to the front end cover; a rear end cap disposed at a rear end of the housing.

Optionally, the disc motor further includes: one end of the output shaft is coaxially connected with one end of the rotating shaft close to the front end cover, and the other end of the output shaft is rotatably connected with the front end cover and penetrates out of the front end cover; and the detection shaft of the encoder is coaxially connected with one end of the rotating shaft, which is close to the rear end cover.

Optionally, the housing further includes: the baffle is arranged in the shell, the rotor is positioned between the baffle and the front end cover, the encoder is positioned between the baffle and the rear end cover, a first groove is formed in one end, close to the front end cover, of the baffle, and the rotating shaft penetrates through the first groove; one end of the front end cover close to the baffle is provided with a second groove, and the output shaft penetrates through the second groove; the disc motor further includes: the outer ring of the first bearing is arranged in the first groove, the inner ring of the first bearing is sleeved on the rotating shaft, the outer ring of the second bearing is arranged in the second groove, and the inner ring of the second bearing is sleeved on the output shaft; the rotating shaft is provided with a first protrusion, and one end of the first protrusion, which is close to the baffle, is abutted against one end of the first bearing inner ring, which is close to the front end cover; and a second protrusion is arranged on the output shaft, and one end of the second protrusion, which is close to the front end cover, is abutted against one end of the second bearing inner ring, which is close to the baffle.

Optionally, the coil includes: the copper wire, the cross-section of copper wire sets up to regular hexagon.

Optionally, the rotor further comprises: the inner ring is sleeved on the rotating shaft; and the magnets are arranged between the outer ring and the inner ring along the circumferential direction of the rotating shaft.

Optionally, the rotor further comprises: the axial direction of the ring groove is coincident with the axial direction of the rotating shaft, and the ring groove is arranged at one end, far away from the stator, of the magnets; the iron core is arranged in the annular groove.

Optionally, the plurality of magnets comprises: a plurality of magnetism group, it is a plurality of the magnetism group is followed the circumference of pivot sets gradually, magnetism group includes: the first magnet, the second magnet, the third magnet and the fourth magnet are sequentially arranged along the circumferential direction of the rotating shaft; the magnetization directions of the first magnet and the third magnet are parallel to the axial direction of the rotating shaft, the magnetization direction of the first magnet is positioned in the direction from the stator to the rotor, and the magnetization direction of the third magnet is positioned in the direction from the rotor to the stator; the magnetization directions of the second magnet and the fourth magnet are parallel to the circumferential direction of the rotating shaft, the magnetization direction of the second magnet is located in the direction from the first magnet to the third magnet, and the magnetization direction of the fourth magnet is located in the direction from the third magnet to the first magnet.

The technical scheme provided by the disclosure can comprise the following beneficial effects:

through the arrangement of the insulating framework, the coils are convenient to wind in multiple layers, and the number of turns of the stator is not limited, so that the counter electromotive force of the disc type motor is improved, the requirement of higher power is met, and the universality of the disc type motor is stronger; the weight of the insulating framework is lighter, so that the whole disc type motor has lighter weight, the disc type motor is more convenient and flexible to use, and the manufacturing cost of the disc type motor can be effectively reduced; the coil is wound on the insulating framework and the insulating framework is arranged on the inner wall of the shell, so that the heat generation is reduced, and the heat dissipation of the disc motor is facilitated, so that the temperature rise of the disc motor is ensured to be stable, the use of heat dissipation pieces such as silicon steel sheets and the like is reduced, the manufacturing cost of the disc motor is further reduced, and the size and the weight of the disc motor are reduced; the plurality of magnets of the rotor are distributed in a Halbach array, so that the disc type motor has better magnetism gathering effect, smaller heat productivity, no cogging torque and more stable high-speed operation; through the setting of encoder, can effectively detect the rotation stroke of pivot to control system such as external control ware of being convenient for makes disc motor's use more convenient, nimble to disc motor's control.

Additional aspects and advantages of the disclosure will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the disclosure.

Drawings

The foregoing and/or additional aspects and advantages of the present disclosure will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic cross-sectional view of a disc motor according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a stator in a disc motor according to an embodiment of the present disclosure;

fig. 3 is a schematic cross-sectional view of a copper wire in a disc motor according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a rotor in a disc motor according to an embodiment of the present disclosure;

as shown in the figure: 1. the motor comprises a shell, 101, a shell, 102, a front end cover, 103, a rear end cover, 104, a baffle, 2, a rotating shaft, 3, a stator, 301, an insulating framework, 3011, a first plate body, 3012, a second plate body, 3013, a third plate body, 3014, a first limiting plate, 3015, a second limiting plate, 302, a coil, 3021, a copper wire, 303, an insulating pouring layer, 4, a rotor, 401, an inner ring, 402, an outer ring, 403, a ring groove, 404, an iron core, 405, a first magnet, 406, a second magnet, 407, a third magnet, 408, a fourth magnet, 5, an air gap, 6, a ring cavity, 7, a ring opening, 8, an output shaft, 9, a first groove, 10, a second groove, 11, a first bearing, 12, a second bearing, 13, a first protrusion, 14, a second protrusion, 15, a connecting terminal, 16 and an encoder.

Detailed Description

Reference will now be made in detail to the embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of illustrating the present disclosure and should not be construed as limiting the same. On the contrary, the embodiments of the disclosure include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.

As shown in fig. 1, fig. 2 and fig. 4, an embodiment of the present disclosure provides a disk motor, including a housing 1, a rotating shaft 2, a stator 3, a rotor 4 and an encoder 16, the rotating shaft 2 rotates and sets up in the housing 1, the stator 3 includes a plurality of insulating frameworks 301 that set up along 2 circumference intervals of rotating shaft, the insulating frameworks 301 set up on the inner wall of housing 1, around being equipped with coil 302 on the insulating framework 301, the axial of coil 302 is parallel with the axial of rotating shaft 2, rotor 4 overlaps and sets up on rotating shaft 2, be provided with air gap 5 between rotor 4 and the stator 3, rotor 4 includes a plurality of magnets that set gradually along 2 circumference of rotating shaft, a plurality of magnets are halbach array distribution, encoder 16 sets up in housing 1, the detection axis of encoder 16 links to each other with the transmission of rotating shaft 2.

It can be understood that, because the plurality of magnets of the rotor 4 are distributed in the halbach array, after the coil 302 is energized, the coil 302 generates a magnetic field and can drive the rotor 4 to rotate, so as to drive the rotating shaft 2 to rotate, and thus, the power output of the disc motor is realized.

The insulating framework 301 is arranged, so that the coils 302 can be wound in multiple layers conveniently, the number of turns of the stator 3 is not limited, the back electromotive force of the disc motor is improved, the requirement of higher power is met, and the universality of the disc motor is higher; the weight of the insulating framework 301 is lighter, so that the overall disc type motor has lighter weight, is more convenient and flexible to use, and can effectively reduce the manufacturing cost of the disc type motor; through establishing coil 302 on insulating skeleton 301 and insulating skeleton 301 sets up on the inner wall of casing 1, not only reduce thermal production, do benefit to disc motor's heat dissipation moreover to reduce the use of radiating piece such as silicon steel sheet when guaranteeing disc motor temperature rise stability, further reduced disc motor's manufacturing cost, and reduced disc motor's volume and weight.

A plurality of magnets of the rotor 4 are distributed in a Halbach array, so that the magnetic gathering effect of the disc type motor is better, the heat productivity is smaller, the cogging torque does not exist, and the high-speed running is more stable.

Through the setting of encoder 16, can effectively detect the rotation stroke of pivot 2 to be convenient for control system such as external control ware to the control of disc motor, make the use of disc motor more convenient, nimble.

It should be noted that the power supply of the disc motor may be set according to actual needs, and for example, the power supply may be 380V three-phase alternating current.

The specific material of the casing 1 may be set according to actual needs, and for example, the casing 1 may be made of an aluminum material to provide the disc motor with better heat dissipation performance.

The specific material of the insulating skeleton 301 may be set according to actual needs, and for example, the insulating skeleton 301 may be made of plastic, so that the insulating skeleton 301 has lighter weight and better insulating property and supporting property.

The specific number of the insulating skeletons 301 may be set according to actual needs, and for example, the number of the insulating skeletons 301 may be 12.

The axial direction of the coil 302 refers to the direction of the central axis of the coil 302, the axial direction of the rotating shaft 2 refers to the direction of the central axis of the rotating shaft 2, the circumferential direction of the rotating shaft 2 refers to the circumferential direction of the rotating shaft 2, i.e., the direction of rotation around the central axis of the rotating shaft 2, and the circumferential direction of the rotating shaft 2 is perpendicular to the axial direction of the rotating shaft 2.

The specific type of the encoder 16 can be set according to actual needs, and is not limited herein.

Halbach arrays are a magnet structure that is an engineered, near-ideal structure, with the goal of producing the strongest magnetic field with the least amount of magnets.

Because the parallel magnetic field and the radial magnetic field which are decomposed by the plurality of magnets distributed in the Halbach array are mutually superposed, the magnetic field intensity close to one side of the stator 3 is greatly improved, so that the volume of the disc motor can be effectively reduced, and the power density of the disc motor is improved;

because the plurality of magnets are distributed in a Halbach array, the sinusoidal distribution degree of a magnetic field in the air gap 5 is higher, and the harmonic content is low, so that inclined grooves are not needed on the stator 3 and the rotor 4, the structure of the disc type motor is simpler, and the manufacturing cost is lower;

the unilateral magnetic field distribution generated by the plurality of magnets distributed in the Halbach array due to the self-shielding effect does not need the rotor 4 to provide a passage for the rotor 4 by adopting a magnetic material, so that a larger selection space is provided for the material of the rotor 4, and the disc type motor has lower rotational inertia and better rapid response performance;

the working points of the plurality of magnets distributed in the Halbach array are higher due to the direction-division magnetization, and generally exceed 0.9, so that the utilization rate of the magnets is effectively improved, and the working efficiency of the disc motor is higher.

The shape and size of the magnet can be set according to actual needs, and the shape of the magnet can be a fan ring as an example.

As shown in fig. 1, in some embodiments, an annular cavity 6 is disposed on an inner wall of the casing 1, an axial direction of the annular cavity 6 coincides with an axial direction of the rotating shaft 2, the rotor 4 is disposed at one side of the annular cavity 6, and a plurality of insulating frameworks 301 are disposed in the annular cavity 6 along a circumferential direction of the rotating shaft 2;

the stator 3 further comprises an insulating pouring layer 303, the insulating pouring layer 303 is filled between the insulating framework 301 and the wall of the annular cavity 6, and an annular opening 7 is formed in one side, close to the rotor 4, of the insulating pouring layer 303.

It can be understood that, through the filling of the insulating pouring seal layer 303, not only the stable installation of the insulating framework 301 on the inner wall of the casing 1 is realized, but also the full attachment of the insulating framework 301 and the inner wall of the casing 1 is realized under the condition that the insulating framework 301 and the casing 1 are insulated, so that the heat dissipation efficiency of the coil 302 on the insulating framework 301 is effectively improved, the temperature rise stability of the disc motor is higher, and the high-performance operation of the disc motor is ensured; through the setting of annular opening 7, avoid influencing the magnetic field drive of coil 302 to rotor 4 when improving coil 302 radiating efficiency, further guarantee the high performance operation of disk motor.

It should be noted that the specific shape and size of the annular cavity 6 may be set according to actual needs, but a certain filling space should be ensured between the insulating framework 301 after the winding 302 is wound and the cavity wall of the annular cavity 6.

The axial direction of the annular chamber 6 refers to the direction of the central axis of the annular chamber 6.

The insulating potting layer 303 may be made of a material having good thermal conductivity to improve the heat dissipation efficiency of the disc motor, and in some embodiments, the insulating potting layer 303 is cast of epoxy resin.

It can be understood that the epoxy resin can be fully filled between the insulating framework 301 and the inner wall of the casing 1 in a pouring mode, so that the heat dissipation efficiency of the coil 302 is higher, the epoxy resin has better insulating property and heat conduction property, the heat dissipation efficiency of the coil 302 is further improved, and the disc motor is ensured to have higher temperature rise stability.

It should be noted that, epoxy resin is used as the prior art, specific components and preparation methods thereof are not described herein, casting processes are also used as the prior art, and specific operation methods thereof are not described herein.

As shown in fig. 1, in some embodiments, the housing 1 includes a casing 101, a front cover 102 and a rear cover 103, the rotating shaft 2 is rotatably disposed in the casing 101, the encoder 16 is disposed in the casing 101, the casing 101 includes a front end and a rear end opposite to each other, the front cover 102 is disposed at the front end of the casing 101, the annular chamber 6 is disposed on an inner wall of the front cover 102, the rotor 4 is disposed at an end of the casing 101 close to the front cover 102, and the rear cover 103 is disposed at the rear end of the casing 101.

It can be understood that, through the split structure of the front end cover 102, the rear end cover 103 and the housing 101, not only the installation of the stator 3, the rotor 4, the encoder 16 and other components is facilitated, but also the overhaul and maintenance of the disc motor are facilitated, so that the use of the disc motor is more convenient and flexible.

It should be noted that the front cover 102 and the rear cover 103 may be disposed on the housing 101 according to actual requirements, and for example, the front cover 102 and the rear cover 103 are respectively fixed to the front end and the rear end of the housing 101 through a plurality of screws.

As shown in fig. 1, in some embodiments, the disc motor further includes an output shaft 8, one end of the output shaft 8 is coaxially connected to one end of the rotating shaft 2 close to the front end cover 102, the other end of the output shaft 8 is rotatably connected to the front end cover 102 and penetrates through the front end cover 102, and a detection shaft of the encoder 16 is coaxially connected to one end of the rotating shaft 2 close to the rear end cover 103.

It can be understood that the stator 3 drives the rotor 4 to rotate, the rotor 4 drives the rotating shaft 2 to rotate synchronously, and the rotating shaft 2 drives the output shaft 8 and the detection shaft of the encoder 16 to rotate synchronously, so as to realize power output and stroke detection.

It should be noted that the connection mode between the output shaft 8 and the rotating shaft 2 can be set according to actual needs, for example, the output shaft 8 and the rotating shaft 2 are integrally formed; the output shaft 8 is connected with the rotating shaft 2 through a coupler.

The connection mode between the detection shaft of the encoder 16 and the rotating shaft 2 can be set according to actual needs, and for example, the detection shaft of the encoder 16 is connected with the rotating shaft 2 through a coupler.

The central axis of the output shaft 8 may also be misaligned with the central axis of the rotating shaft 2, for example, the central axis of the output shaft 8 is perpendicular to the central axis of the rotating shaft 2, and the output shaft 8 is connected with the rotating shaft 2 through gear transmission.

The central axis of the detection shaft of the encoder 16 may also be misaligned with the central axis of the rotating shaft 2, for example, the central axis of the detection shaft of the encoder 16 is perpendicular to the central axis of the rotating shaft 2, and the detection shaft of the encoder 16 is connected with the rotating shaft 2 through a gear transmission.

As shown in fig. 1, in some embodiments, the casing 1 further includes a baffle plate 104, the baffle plate 104 is disposed in the casing 101, the rotor 4 is located between the baffle plate 104 and the front end cover 102, the encoder 16 is located between the baffle plate 104 and the rear end cover 103, one end of the baffle plate 104 close to the front end cover 102 is provided with a first groove 9, the rotating shaft 2 penetrates through the first groove 9, one end of the front end cover 102 close to the baffle plate 104 is provided with a second groove 10, and the output shaft 8 penetrates through the second groove 10;

the disc type motor further comprises a first bearing 11 and a second bearing 12, wherein an outer ring of the first bearing 11 is arranged in the first groove 9, an inner ring of the first bearing 11 is sleeved on the rotating shaft 2, an outer ring of the second bearing 12 is arranged in the second groove 10, and an inner ring of the second bearing 12 is sleeved on the output shaft 8;

the rotating shaft 2 is provided with a first protrusion 13, one end of the first protrusion 13 close to the baffle plate 104 is abutted with one end of the inner ring of the first bearing 11 close to the front end cover 102, the output shaft 8 is provided with a second protrusion 14, and one end of the second protrusion 14 close to the front end cover 102 is abutted with one end of the inner ring of the second bearing 12 close to the baffle plate 104.

It can be understood that, through the setting of first bearing 11 and second bearing 12, realize the rotation setting of output shaft 8 and pivot 2, simultaneously, through the setting of first recess 9, second recess 10, first protruding 13 and second protruding 14, make the setting that first bearing 11 and second bearing 12 can be stable in casing 101, thereby guarantee pivot 2 and output shaft 8's stable rotation, outside output power that makes the disc motor can be stable, the stable rotation of encoder 16 detection axle has also been guaranteed simultaneously, make the 2 strokes of outside output pivot that the disc motor can be accurate.

It should be noted that the baffle 104 may be disposed in the housing 101 according to actual needs, for example, the baffle 104 is integrally formed with the housing 101; the baffle 104 is disposed in the housing 101 by means of screw fixation.

The types of the first bearing 11 and the second bearing 12 can be set according to actual needs, and are not limited herein.

The first groove 9 is used for accommodating the first bearing 11, the outer ring of the first bearing 11 abuts against the groove bottom of the first groove 9, the second groove 10 is used for accommodating the second bearing 12, and the outer ring of the second bearing 12 abuts against the groove bottom of the second groove 10, wherein the shapes and the sizes of the first groove 9 and the second groove 10 can be determined according to the shapes and the sizes of the first bearing 11 and the second bearing 12, and the invention is not limited herein.

The groove bottoms of the first protrusion 13 and the first groove 9 are used for limiting the first bearing 11, and the groove bottoms of the second protrusion 14 and the second groove 10 are used for limiting the second bearing 12, wherein the shape and the size of the first protrusion 13 and the second protrusion 14 can be determined according to the shape and the size of the first bearing 11 and the second bearing 12, and are not limited herein.

As shown in fig. 3, in some embodiments, coil 302 includes copper wire 3021, with the cross-section of copper wire 3021 configured as a regular hexagon.

It can be understood that the cross section of the copper wire 3021 is arranged to be regular hexagon, so that the copper wire 3021 is conveniently sleeved and aligned, and the layout of the coil 302 is more excellent, thereby effectively reducing the resistance of the disc motor and improving the working efficiency of the disc battery.

As shown in fig. 2, in some embodiments, the insulating framework 301 includes a first plate 3011, a second plate 3012, and a third plate 3013, the first plate 3011 is located on the circumference of the rotating shaft 2, the second plate 3012 is located on the radial direction of the rotating shaft 2, one end of the second plate 3012 away from the rotating shaft 2 is connected to one end of the first plate 3011, the third plate 3013 is located on the radial direction of the rotating shaft 2, one end of the third plate 3013 away from the rotating shaft 2 is connected to the other end of the first plate 3011, one end of the third plate 3013 close to the rotating shaft 2 is connected to one end of the second plate 3012 close to the rotating shaft 2, and the coil 302 is sequentially wound on the first plate 3011, the second plate 3012, and the third plate 3013.

It can be understood that, through the setting of first plate body 3011, second plate body 3012 and third plate body 3013, make insulating skeleton 301 form the structure that is close the fretwork triangular prism, not only be convenient for winding of coil 302 and establish, the structure is more stable firm moreover, guarantees stator 3 to the stable drive of rotor 4.

As shown in fig. 2, in some embodiments, a first stopper 3014 is disposed at an end of the insulating frame 301 close to the rotor 4, a second stopper 3015 is disposed at an end of the insulating frame 301 far from the rotor 4, a winding slot is formed between the first stopper 3014 and the second stopper 3015, and the coil 302 is wound in the winding slot.

It can be understood that, through the arrangement of the first limiting plate 3014 and the second limiting plate 3015, the winding of the coil 302 on the insulating framework 301 is facilitated, and the falling off of the coil 302 on the insulating framework 301 is avoided, so that the stability of the structure of the stator 3 is ensured.

It should be noted that the positions and sizes of the first limiting plate 3014 and the second limiting plate 3015 determine the size of the winding slot, and the specific positions and sizes of the first limiting plate 3014 and the second limiting plate 3015 may be set according to actual needs, which is not limited herein.

As shown in fig. 1, in some embodiments, the disc motor further includes a connection terminal 15, the connection terminal 15 is disposed on the housing 1, and the connection terminal 15 is electrically connected to the coil 302 and the encoder 16.

It can be understood that the coil 302 and the encoder 16 are electrically connected to an external power source and the encoder 16 is electrically connected to an external controller through the arrangement of the connection terminal 15, so that the disc motor is more convenient and flexible to use.

It should be noted that the specific type of the connection terminal 15 may be set according to actual needs, and is not limited herein.

As shown in fig. 4, in some embodiments, the rotor 4 further includes an inner ring 401 and an outer ring 402, the inner ring 401 is fitted on the rotating shaft 2, and the plurality of magnets are disposed between the outer ring 402 and the inner ring 401 in the circumferential direction of the rotating shaft 2.

It can be understood that, by the arrangement of the inner ring 401 and the outer ring 402, the plurality of magnets are stably arranged on the rotating shaft 2 along the circumferential direction of the rotating shaft 2, and the rotor 4 is ensured to stably rotate synchronously with the rotating shaft 2.

It should be noted that the specific materials of the inner ring 401 and the outer ring 402 can be set according to actual needs, and for example, the materials of the inner ring 401 and the outer ring 402 are made of non-iron core materials.

The inner ring 401 is sleeved on the rotating shaft 2, and the outer ring 402 is used for limiting a plurality of magnets on the inner ring 401, wherein the specific sizes of the inner ring 401 and the outer ring 402 can be determined according to the size of the rotating shaft 2 and the size of the magnets, and are not limited herein.

As shown in fig. 4, in some embodiments, the rotor 4 further includes a ring groove 403 and a core 404, an axial direction of the ring groove 403 coincides with an axial direction of the rotating shaft 2, the ring groove 403 is disposed at an end of the plurality of magnets away from the stator 3, and the core 404 is disposed in the ring groove 403.

It can be understood that, by the arrangement of the ring groove 403, the iron core 404 is conveniently mounted on the rotor 4, and by the arrangement of the iron core 404, the magnetic field strength of a plurality of magnets can be increased, and the working efficiency of the disc motor is effectively improved.

It should be noted that the specific type of the iron core 404 can be set according to actual needs, and is not limited herein.

The axial direction of the ring groove 403 refers to the direction of the central axis of the ring groove 403.

The iron core 404 can be disposed in the annular groove 403 according to actual requirements, and for example, the iron core 404 can be disposed in the annular groove 403 by gluing.

As shown in fig. 4, in some embodiments, the plurality of magnets includes a plurality of magnetic groups, the plurality of magnetic groups are sequentially arranged along the circumferential direction of the rotating shaft 2, and the magnetic groups include a first magnet 405, a second magnet 406, a third magnet 407, and a fourth magnet 408, which are sequentially arranged along the circumferential direction of the rotating shaft 2;

the magnetization directions of the first magnet 405 and the third magnet 407 are both parallel to the axial direction of the rotating shaft 2, the magnetization direction of the first magnet 405 is located in the direction from the stator 3 to the rotor 4, the magnetization direction of the third magnet 407 is located in the direction from the rotor 4 to the stator 3, the magnetization directions of the second magnet 406 and the fourth magnet 408 are both parallel to the circumferential direction of the rotating shaft 2, the magnetization direction of the second magnet 406 is located in the direction from the first magnet 405 to the third magnet 407, and the magnetization direction of the fourth magnet 408 is located in the direction from the third magnet 407 to the first magnet 405.

It can be understood that, by the arrangement of the first magnet 405, the second magnet 406, the third magnet 407 and the fourth magnet 408, the magnetic field at the end of the rotor 4 close to the stator 3 is strong, the magnetic field at the end of the rotor 4 far from the stator 3 is weak, and the whole rotor 4 has the property of a single-sided magnet, so that the power density of the disc motor is improved, and the working efficiency of the disc motor is improved.

It should be noted that the specific number of the magnetic groups may be set according to actual needs, and for example, the number of the magnetic groups may be 5, that is, the number of the magnets of the rotor 4 may be 20.

In the description of the present disclosure, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present disclosure, "a plurality" means two or more unless otherwise specified.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps in the process, and alternate implementations are included within the scope of the preferred embodiment of the present disclosure in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present disclosure.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present disclosure have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure, and that changes, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present disclosure.

Claims (10)

1. A disc motor, comprising:

a housing;

the rotating shaft is rotatably arranged in the shell;

a stator, the stator comprising: the insulating frameworks are arranged on the inner wall of the shell, coils are wound on the insulating frameworks, and the axial directions of the coils are parallel to the axial direction of the rotating shaft;

the rotor, the rotor cover is established in the pivot, the rotor with be provided with the air gap between the stator, the rotor includes: the magnets are sequentially arranged along the circumferential direction of the rotating shaft and distributed in a Halbach array;

the encoder is arranged in the shell, and a detection shaft of the encoder is in transmission connection with the rotating shaft.

2. The disc motor according to claim 1, wherein an annular cavity is provided on an inner wall of the housing, an axial direction of the annular cavity coincides with an axial direction of the rotating shaft, the rotor is provided at one side of the annular cavity, and the plurality of insulating bobbins are provided in the annular cavity in a circumferential direction of the rotating shaft;

the stator further includes: and the insulating pouring sealing layer is filled between the insulating framework and the wall of the annular cavity, and an annular opening is formed in one side, close to the rotor, of the insulating pouring sealing layer.

3. The disc motor of claim 2, wherein the insulating potting layer is cast from epoxy.

4. The disc motor of claim 2, wherein the housing comprises:

the casing, the pivot rotates to be set up in the casing, the encoder sets up in the casing, the casing includes: front and back ends in opposite positions;

the front end cover is arranged at the front end of the shell, the annular cavity is arranged on the inner wall of the front end cover, and the rotor is positioned at one end of the shell close to the front end cover;

a rear end cap disposed at a rear end of the housing.

5. The disk motor according to claim 4,

the disc motor further includes: one end of the output shaft is coaxially connected with one end of the rotating shaft close to the front end cover, and the other end of the output shaft is rotatably connected with the front end cover and penetrates out of the front end cover;

and the detection shaft of the encoder is coaxially connected with one end of the rotating shaft, which is close to the rear end cover.

6. The disc motor according to claim 5,

the housing further includes: the baffle is arranged in the shell, the rotor is positioned between the baffle and the front end cover, the encoder is positioned between the baffle and the rear end cover, one end of the baffle, which is close to the front end cover, is provided with a first groove, and the rotating shaft penetrates through the first groove;

one end of the front end cover, which is close to the baffle plate, is provided with a second groove, and the output shaft penetrates through the second groove;

the disc motor further includes: the outer ring of the first bearing is arranged in the first groove, the inner ring of the first bearing is sleeved on the rotating shaft, the outer ring of the second bearing is arranged in the second groove, and the inner ring of the second bearing is sleeved on the output shaft;

the rotating shaft is provided with a first protrusion, and one end of the first protrusion, which is close to the baffle, is abutted against one end of the first bearing inner ring, which is close to the front end cover;

and a second protrusion is arranged on the output shaft, and one end of the second protrusion close to the front end cover is abutted with one end of the second bearing inner ring close to the baffle.

7. The disc motor according to any one of claims 1 to 6, wherein the coil includes: the copper wire, the cross-section of copper wire sets up to regular hexagon.

8. The disc motor according to any one of claims 1 to 6, wherein the rotor further comprises:

the inner ring is sleeved on the rotating shaft;

and the magnets are arranged between the outer ring and the inner ring along the circumferential direction of the rotating shaft.

9. The disc motor according to any one of claims 1 to 6, wherein the rotor further comprises:

the axial direction of the ring groove is coincident with the axial direction of the rotating shaft, and the ring groove is arranged at one end, far away from the stator, of the magnets;

the iron core is arranged in the annular groove.

10. The disc motor according to any one of claims 1 to 6, wherein the plurality of magnets include: a plurality of magnetism group, it is a plurality of the magnetism group is followed the circumference of pivot sets gradually, magnetism group includes: the first magnet, the second magnet, the third magnet and the fourth magnet are sequentially arranged along the circumferential direction of the rotating shaft;

the magnetization directions of the first magnet and the third magnet are parallel to the axial direction of the rotating shaft, the magnetization direction of the first magnet is positioned in the direction from the stator to the rotor, and the magnetization direction of the third magnet is positioned in the direction from the rotor to the stator;

the magnetization directions of the second magnet and the fourth magnet are parallel to the circumferential direction of the rotating shaft, the magnetization direction of the second magnet is located in the direction from the first magnet to the third magnet, and the magnetization direction of the fourth magnet is located in the direction from the third magnet to the first magnet.

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