CN211239598U

CN211239598U - Electric machine

Info

Publication number: CN211239598U
Application number: CN202020057133.3U
Authority: CN
Inventors: 纪大山
Original assignee: Individual
Current assignee: Jiaward Foshan Technology Co Ltd
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2020-08-11
Anticipated expiration: 2030-01-10

Abstract

The utility model belongs to the technical field of the motor technique and specifically relates to indicate a motor, which comprises an outer shell, the apparatus further comprises a rotating shaft, the magnetic ring, three-phase coreless coil winding and insulating end cover, the shell includes the sleeve, with the inner core of the coaxial setting of sleeve and connect in a plurality of aviation baffles of sleeve and inner core, the sleeve, inner core and two adjacent aviation baffles enclose and establish into the wind channel, the inner core is equipped with the mounting hole, be equipped with the bearing in the mounting hole, the bearing is run through in the pivot, the magnetic ring suit is outside the one end of pivot, the magnetic ring is located the sleeve, three-phase coreless coil winding cover is located outside the magnetic ring, be equipped with rotational clearance between three-phase coreless coil winding and the magnetic ring, insulating end cover is installed in telescopic air-out end and is fixed in the sleeve with three-. The utility model discloses a radiating effect is good, and the dismouting is convenient with the maintenance, and expansibility is good, and the axiality is good, and it is stable to rotate, and gas flow resistance is little, and the air output is big, and is efficient, long service life.

Description

Electric machine

Technical Field

The utility model belongs to the technical field of the motor technique and specifically relates to indicate a motor.

Background

At present, with the continuous development of the motor industry in recent years, motor manufacturing enterprises continuously pursue small volume and high power density, materials with high electromagnetic load and high thermal load are increasingly adopted in the motor design, the loss generated during the operation of the motor is increased, the overall temperature rise of the motor is overhigh or the local temperature rise of the motor is overhigh, the service life of the motor is reduced, the economic and technical indexes of the motor such as efficiency, torque and the like are influenced, and the structural parts of the motor are seriously deformed, so that the operation safety of the motor is endangered. This may reduce the efficiency and performance of the motor. Therefore, the drawbacks are obvious, and a solution is needed.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, an object of the utility model is to provide a radiating effect is good, long service life, dismouting and maintenance convenient motor.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a motor comprises a shell, a rotating shaft, a magnetic ring, a three-phase coreless coil winding and an insulating end cover, wherein the shell comprises a sleeve, an inner core which is arranged at an air inlet end of the sleeve and is coaxial with the sleeve, and a plurality of air deflectors which are connected between the inner wall of the sleeve and the outer wall of the inner core, the plurality of air deflectors are arranged around the central axis of the inner core in an annular array, the inner wall of the sleeve, the outer wall of the inner core and two adjacent air deflectors enclose an air guide channel, a mounting hole is concavely arranged in the middle of the inner core, a bearing is arranged in the mounting hole, the rotating shaft is arranged on an inner ring of the bearing and penetrates through the bearing, the magnetic ring is sleeved outside one end of the rotating shaft, the magnetic ring is positioned in the sleeve, the three-phase coreless coil winding is sleeved outside the magnetic ring, a rotating gap is arranged between the inner wall of the three-phase coreless, the inner core is provided with a plurality of louvres, and a plurality of louvres surround the central axis of inner core and are arranged around the mounting hole in an annular array and communicate with the mounting hole.

Further, the quantity of mounting hole is two, and two mounting holes are established from the both ends face of inner core inwards concave respectively and are formed, are provided with the spacing arch that is used for conflicting the bearing between two mounting holes.

Further, the mounting hole is formed by inwards concave setting from the inner side of inner core, the outer side of inner core is provided with the through-hole with the mounting hole intercommunication, the pivot runs through the inner circle and the through-hole of bearing.

Further, the housing is a metal housing.

Furthermore, the motor also comprises an insulating part arranged between the inner wall of the three-phase coreless coil winding and the outer wall of the magnetic ring, one end of the insulating part props against the other side of the inner core, and the other end of the insulating part props against the three-phase coreless coil winding.

Furthermore, the inner end face of the inner core is concavely provided with a positioning cavity communicated with the mounting hole, and one end of the insulating part is inserted into the positioning cavity.

Further, the insulating part includes the lantern ring and sets up in a plurality of locating plates of the circumference of the lantern ring, the one end cartridge of the lantern ring is in the mounting hole, and one side of a plurality of locating plates is all inserted and is located the locating cavity, has the space between the one end of magnetic ring and the other end of the lantern ring, and the opposite side of a plurality of locating plates all contradicts the one end of three-phase coreless coil winding.

Further, insulating end cover includes the end ring, connects in a plurality of collets of the one end of end ring, connects in a plurality of buckle claws of the circumference of end ring and connects in a plurality of stoppers of the other end of end ring, and outside three-phase coreless coil winding was located to a plurality of collets cover, a plurality of buckle claws all were connected with sleeve buckle, and a plurality of stoppers all contradict the other end of three-phase coreless coil winding.

Furthermore, the inner end face of the inner core is concavely provided with a jack, and one end, far away from the end ring, of the collet is provided with an insert inserted into the jack.

Furthermore, a limiting piece arranged opposite to one collet is convexly arranged on the inner side of the limiting piece, one side of the limiting piece, the limiting piece and the collet are enclosed to form a limiting groove, the other end of the three-phase coreless coil winding is inserted into the limiting groove, and a space is formed between the other side of the limiting piece and the outer side wall of the magnetic ring; the rotating clearance is 0.5mm-0.8 mm; a second bearing is arranged between the limiting pieces of the limiting blocks, and one end of the rotating shaft penetrates through the magnetic ring and then is inserted into the inner ring of the second bearing.

The utility model has the advantages that: during actual work, one part of airflow generated by rotation of the rotating part dissipates heat of internal parts (such as a rotating shaft, a bearing, a magnetic ring, a three-phase coreless coil winding and the like) of the motor through the plurality of heat dissipation holes and mounting holes, the other part of airflow is blown out through the plurality of air guide channels, and in the process of blowing the airflow out of the sleeve, the airflow can not only directly blow out of the sleeve, but also can be diffused into a rotating gap and blown out through the rotating gap, so that the heat dissipation of the magnetic ring and the three-phase coreless coil winding is facilitated, the heat dissipation effect is good, the service life of the motor is prolonged, and the motor adopts a split structure, so that the motor can be conveniently disassembled, assembled and maintained; the air deflector is in an involute arc surface shape, and guides airflow, so that the resistance of the airflow is reduced, the noise is reduced, and the air quantity and the air pressure generated by the motor are improved; the inner wall of mounting hole carries on spacingly to the bearing to guarantee the stability of bearing, two bearings are run through to the pivot, make the both ends of pivot be the cantilever setting, support the pivot through the bearing, and can guarantee pivot and inner core and telescopic axiality well, improved pivot pivoted stability and efficiency. The utility model discloses a compact structure, the radiating effect is good, and the dismouting is convenient with the maintenance, and expansibility is good, and the axiality of pivot and sleeve and inner core is good, and it is stable to rotate, and gas flow resistance is little, and the air output is big, and motor efficiency is high, long service life.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment of the present invention.

Fig. 2 is a schematic perspective view of another view angle according to a first embodiment of the present invention.

Fig. 3 is an exploded schematic diagram of a first embodiment and a third embodiment of the present invention.

Fig. 4 is a schematic perspective view of the housing according to the first and third embodiments of the present invention.

Fig. 5 is a schematic perspective view of a second embodiment of the present invention.

Fig. 6 is an exploded schematic view of a second embodiment of the present invention.

Fig. 7 is a schematic perspective view of a housing according to a second embodiment of the present invention.

Description of reference numerals:

1. a housing; 11. a sleeve; 111. a snap-in hole; 112. positioning a groove; 113. a buckling block; 114. positioning blocks; 12. an inner core; 13. an air deflector; 14. an air guide duct; 15. mounting holes; 16. a bearing; 17. heat dissipation holes; 18. a limiting bulge; 19. a jack; 2. a rotating shaft; 3. a magnetic ring; 4. a three-phase coreless coil winding; 5. an insulating end cap; 51. an end ring; 52. a collet; 53. a snap-fit claw; 54. a limiting block; 55. a plug-in; 56. a limiting sheet; 57. a limiting groove; 58. a circular arc surface; 6. a through hole; 61. a convex column; 7. an insulating member; 71. a collar; 72. positioning a plate; 8. a positioning cavity.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.

The first embodiment.

As shown in fig. 1 to 4, the present invention provides a motor, which includes a housing 1, a rotating shaft 2, a magnetic ring 3, a three-phase coreless coil winding 4 and an insulating end cover 5, wherein the housing 1 includes a sleeve 11, an inner core 12 disposed at an air inlet end of the sleeve 11 and coaxially disposed with the sleeve 11, and a plurality of air deflectors 13 connected between an inner wall of the sleeve 11 and an outer wall of the inner core 12, the air deflectors 13 are in an involute arc surface shape, the plurality of air deflectors 13 are disposed around a central axis of the inner core 12 in an annular array, an air guide duct 14 is enclosed by the inner wall of the sleeve 11, the outer wall of the inner core 12 and two adjacent air deflectors 13, a mounting hole 15 is concavely disposed in a middle portion of the inner core 12, a bearing 16 is disposed in the mounting hole 15, the rotating shaft 2 is disposed in an inner ring of the bearing 16 and penetrates through the bearing 16, the magnetic ring 3 is sleeved outside one end (, the three-phase coreless coil winding 4 is sleeved outside the magnetic ring 3, a rotating gap is formed between the inner wall of the three-phase coreless coil winding 4 and the outer wall of the magnetic ring 3, the insulating end cover 5 is detachably arranged at the air outlet end of the sleeve 11 and used for fixing the three-phase coreless coil winding 4 in the sleeve 11, the inner core 12 is provided with a plurality of heat dissipation holes 17, and the plurality of heat dissipation holes 17 are arranged around the central axis of the inner core 12 in an annular array mode and are communicated with the mounting hole 15. The rotating part is sleeved outside the other end (head end) of the rotating shaft 2, namely the rotating part is positioned outside the inner core 12.

In actual work, one part of air flow generated by rotation of the rotating part dissipates heat of internal parts (such as the rotating shaft 2, the bearing 16, the magnetic ring 3, the three-phase coreless coil winding 4 and the like) of the motor through the heat dissipation holes 17 and the mounting holes 15, the other part of air flow is blown out through the air guide channels 14, and in the process that the air flow is blown out of the sleeve 11, the air flow can be directly blown out of the sleeve 11, can be diffused into a rotating gap and blown out through the rotating gap, so that the heat dissipation of the magnetic ring 3 and the three-phase coreless coil winding 4 is facilitated, the heat dissipation effect is good, the service life of the motor is prolonged, and the motor adopts a split structure, so that the motor can be conveniently disassembled, assembled and maintained; the air deflector 13 is in an involute arc surface shape, and the air deflector 13 in the involute arc surface shape guides airflow, so that the resistance of the airflow is reduced, the noise is reduced, and the air volume and the air pressure generated by the motor are improved; the inner wall of mounting hole 15 carries on spacingly to bearing 16 to guarantee bearing 16's stability, two bearings 16 are run through to pivot 2, make the both ends of pivot 2 be the cantilever setting, support pivot 2 through bearing 16, and can guarantee pivot 2 well and inner core 12 and sleeve 11's axiality, improved pivot 2 pivoted stability and efficiency. The utility model discloses a compact structure, the radiating effect is good, and the dismouting is convenient with the maintenance, and expansibility is good, and magnetic field distribution is even, and the axiality of pivot 2 and sleeve 11 and inner core 12 is good, rotates stably, and airflow flow resistance is little, and the air output is big, and motor efficiency is high, long service life.

In this embodiment, the number of the mounting holes 15 and the number of the bearings 16 are two, the two mounting holes 15 are respectively formed by inward concave from two end surfaces of the inner core 12, a limiting protrusion 18 is arranged between the two mounting holes 15, the two bearings 16 are respectively installed in the two mounting holes 15, two ends of the limiting protrusion 18 are respectively abutted against the two bearings 16, and the depth of the mounting holes 15 is not less than the thickness of the bearings 16. The inner wall of the mounting hole 15 abuts against the outer ring of the bearing 16, and the limiting bulge 18 limits the bearing 16, so that the bearing 16 is convenient to mount, and the stability of the bearing 16 mounted on the inner core 12 is improved; two bearings 16 are run through to pivot 2, and the both ends of pivot 2 are the cantilever setting, support pivot 2 through two bearings 16, and can guarantee pivot 2 and sleeve 11's axiality well, improved 2 pivoted stability of pivot and efficiency.

In this embodiment, the insulating end cap 5 includes an end ring 51, a plurality of collets 52 connected to one end of the end ring 51, a plurality of snap claws 53 connected to the circumference of the end ring 51, and a plurality of stoppers 54 connected to the other end of the end ring 51, the plurality of collets 52 are sleeved outside the three-phase coreless coil winding 4, the plurality of snap claws 53 are all connected with the sleeve 11 in a snap-fit manner, the plurality of stoppers 54 all abut against the other end of the three-phase coreless coil winding 4, and the snap claws 53 are L-shaped.

Through a plurality of

buckle claws

53 and 11 buckle connections of sleeve, realize that insulating end cover 5 and shell 1 detachably are connected, the dismouting and the maintenance of insulating end cover 5 and shell 1 of being convenient for do not need extra assembly and disassembly tools can realize the dismouting of insulating end cover 5 and shell 1, have reduced the cost of dismouting and maintenance. The three-phase coreless coil winding 4 is uniformly sleeved with the plurality of the collets 52, and the plurality of the collets 52 clamp the three-phase coreless coil winding 4 tightly, so that the assembly is convenient, and the stability of the three-phase coreless coil winding 4 is ensured. And the three-phase coreless coil winding 4 arranged in the collet 52 is limited by the plurality of limiting blocks 54, so that the position precision of the three-phase coreless coil winding 4 is improved, and the stability of the three-phase coreless coil winding 4 is further improved.

In this embodiment, the inner end surface of the inner core 12 is concavely provided with a jack 19, and one end of the collet 52 away from the end ring 51 is provided with an insert 55 inserted into the jack 19. While the insulating end cover 5 is buckled on the sleeve 11, the plug-in piece 55 is inserted into the plug hole 19 of the inner core 12, and the plug-in piece 55 is guided and limited through the plug hole 19, so that the collet 52 can firmly clamp the three-phase coreless coil winding 4.

In order to further improve the stability of the three-phase coreless coil winding 4 in the insulating end cap 5, in this embodiment, a limiting piece 56 disposed opposite to one of the collet 52 is convexly disposed on the inner side of the limiting piece 54, one side of the limiting piece 56, the limiting piece 54 and the collet 52 are enclosed to form a limiting groove 57, the other end of the three-phase coreless coil winding 4 is inserted into the limiting groove 57, and a space is provided between the other side of the limiting piece 56 and the outer side wall of the magnetic ring 3.

Specifically, in order to ensure that the air gap density is large, the rotating gap is 0.5mm-0.8mm, when the rotating gap is too small, the magnetic ring 3 and the three-phase coreless coil winding 4 are easy to rub, and when the rotating gap is too large, the air gap density is small; a second bearing is arranged between the limiting pieces 56 of the limiting blocks 54, one end (tail end) of the rotating shaft 2 penetrates through the magnetic ring 3 and then is inserted into the inner ring of the second bearing, and one end of the rotating shaft 2 is supported by the second bearing, so that the coaxiality of the rotating shaft 2 is further improved, and the rotating efficiency of the rotating shaft 2 is also improved.

Of course, the bearing 16 and the second bearing can be combined at will, so that the number of the two can also be increased or decreased according to actual requirements, such as: when the number of bearings 16 is two, the second bearing may not be mounted; when the number of bearings 16 is one, one second bearing may be installed.

Specifically, the opposite side of spacing piece 56 is provided with the arc surface 58 the same with the lateral wall radian of second bearing, closely contradicts the lateral wall of second bearing through arc surface 58 to carry on spacingly to the second bearing, guaranteed the stability of second bearing.

In this embodiment, a fastening hole 111 is formed in the middle of the sleeve 11, a positioning groove 112 is formed in the air outlet end of the sleeve 11, a fastening block 113 fastened in the fastening hole 111 is arranged at one end of the fastening claw 53 far away from the end ring 51, and a positioning block 114 inserted in the positioning groove 112 is arranged at one end of the fastening claw 53 close to the end ring 51. This structural design, the insulating end cover 5 of being convenient for carries out the dismouting with sleeve 11, has improved the stability and the efficiency of insulating end cover 5 and the equipment of shell 1.

Example two.

As shown in fig. 5 to 7, the present embodiment is different from the first embodiment in that:

in this embodiment, mounting hole 15 is formed from the concave establishment of the inboard middle part towards inner core 12 of inner core 12, the lateral surface of inner core 12 is provided with the through-hole 6 that communicates with mounting hole 15, pivot 2 runs through the inner circle and the through-hole 6 of bearing 16, and the thickness sum of two bearings 16 is not more than the hole depth of mounting hole 15 for bearing 16 and inner core 12's compact structure, pivot 2 runs through two bearings 16 and through-hole 6, makes the both ends of pivot 2 be the cantilever setting, supports pivot 2 through two bearings 16, and can guarantee pivot 2 well with inner core 12 and sleeve 11's axiality, has improved 2 pivoted stability of pivot and efficiency. Specifically, the lateral surface of inner core 12 is provided with projection 61, through-hole 6 runs through projection 61, and projection 61 is used for conflicting the medial surface of rotating the piece to inner core 12 has been reduced with the area of contact who rotates the piece, thereby has reduced the frictional resistance that receives when rotating the piece and has rotated.

The remaining structure of this embodiment is the same as that of the first embodiment, and is not described herein again.

Example three.

As shown in fig. 3 and 4, the present embodiment is different from the first embodiment in that:

in this embodiment, the housing 1 is a metal housing, specifically, the housing 1 is a zinc alloy housing or a zinc-aluminum alloy housing, and the housing 1 of this structure has the characteristic of anti-electromagnetic interference, so as to prevent the occurrence of the magnetic flux leakage phenomenon.

In this embodiment, the motor further includes an insulating member 7 disposed between an inner wall of the three-phase coreless coil winding 4 and an outer wall of the magnetic ring 3, one end of the insulating member 7 abuts against the other side of the inner core 12, and the other end of the insulating member 7 abuts against the three-phase coreless coil winding 4. The shell 1 and the three-phase coreless coil winding 4 are insulated through the insulating part 7, the problem of short circuit or electric leakage of the motor is prevented, safety performance is good, and the motor can work normally.

In this embodiment, the inner end surface of the inner core 12 is concavely provided with a positioning cavity 8 communicated with the mounting hole 15, and one end of the insulating member 7 is inserted into the positioning cavity 8. The insulating part 7 is positioned through the positioning cavity 8, so that the insulating part 7 is convenient to mount on one hand, and the stability of the insulating part 7 is ensured on the other hand.

In this embodiment, the insulating member 7 includes a lantern ring 71 and a plurality of locating plates 72 arranged in the circumferential direction of the lantern ring 71, the plurality of locating plates 72 are arranged in an annular array around the central axis of the lantern ring 71, one end of the lantern ring 71 is inserted into the mounting hole 15, one side of the plurality of locating plates 72 is inserted into the locating cavity 8, a gap is formed between one end of the magnetic ring 3 and the other end of the lantern ring 71, and the other side of the plurality of locating plates 72 abuts against one end of the three-phase coreless coil winding 4. The insulating part 7 with the structural design is convenient for assembling the inner core 12, the insulating part 7, the magnetic ring 3 and the three-phase coreless coil winding 4, so that the inner core 12, the insulating part 7, the magnetic ring 3 and the three-phase coreless coil winding 4 are compact in structure, the stability and the position precision of the insulating part 7, the magnetic ring 3 and the three-phase coreless coil winding 4 are improved, and the insulating effect is good.

All the technical features in the embodiment can be freely combined according to actual needs.

The above-mentioned embodiment is the utility model discloses the implementation scheme of preferred, in addition, the utility model discloses can also realize by other modes, any obvious replacement is all within the protection scope of the utility model under the prerequisite that does not deviate from this technical scheme design.

Claims

1. An electric machine characterized by: the three-phase coreless coil winding comprises a shell, a rotating shaft, a magnetic ring, a three-phase coreless coil winding and an insulating end cover, wherein the shell comprises a sleeve, an inner core which is arranged at an air inlet end of the sleeve and is coaxial with the sleeve, and a plurality of air deflectors which are connected between the inner wall of the sleeve and the outer wall of the inner core, the plurality of air deflectors are arranged around the central axis of the inner core in an annular array, the inner wall of the sleeve, the outer wall of the inner core and two adjacent air deflectors surround to form an air guide channel, a mounting hole is concavely arranged in the middle of the inner core, a bearing is arranged in the mounting hole, the rotating shaft is arranged on an inner ring of the bearing and penetrates through the bearing, the magnetic ring is sleeved outside one end of the rotating shaft, the magnetic ring is positioned in the sleeve, the three-phase coreless coil winding is sleeved outside the magnetic ring, a rotating gap, the inner core is provided with a plurality of louvres, and a plurality of louvres surround the central axis of inner core and are arranged around the mounting hole in an annular array and communicate with the mounting hole.

2. An electric machine as claimed in claim 1, characterized in that: the quantity of mounting hole is two, and two mounting holes are established from the both ends face of inner core inwards concavely respectively and are formed, are provided with the spacing arch that is used for conflicting the bearing between two mounting holes.

3. An electric machine as claimed in claim 1, characterized in that: the mounting hole is formed by inwards concave arrangement of the inner side face of the inner core, a through hole communicated with the mounting hole is formed in the outer side face of the inner core, and the rotating shaft penetrates through the inner ring and the through hole of the bearing.

4. An electric machine as claimed in claim 1, characterized in that: the shell is a metal shell.

5. An electric machine as claimed in claim 1, characterized in that: the motor further comprises an insulating part arranged between the inner wall of the three-phase coreless coil winding and the outer wall of the magnetic ring, one end of the insulating part props against the other side of the inner core, and the other end of the insulating part props against the three-phase coreless coil winding.

6. An electric machine as claimed in claim 5, characterized in that: the inner end face of the inner core is concavely provided with a positioning cavity communicated with the mounting hole, and one end of the insulating part is inserted into the positioning cavity.

7. An electrical machine according to claim 6, wherein: the insulating part includes the lantern ring and sets up in a plurality of locating plates of the circumference of the lantern ring, the one end cartridge of lantern ring is in the mounting hole, and one side of a plurality of locating plates all inserts and locates the location intracavity, has the space between the one end of magnetic ring and the other end of the lantern ring, and the opposite side of a plurality of locating plates all contradicts the one end of three-phase coreless coil winding.

8. An electrical machine according to any one of claims 1 to 7, wherein: the insulating end cover includes the end links, connects in a plurality of collets of the one end of end links, connects in a plurality of buckle claws of the circumference of end links and connects in a plurality of stoppers of the other end of end links, and outside three-phase coreless coil winding was located to a plurality of collets cover, a plurality of buckle claws all were connected with sleeve buckle, and a plurality of stoppers all contradict the other end of three-phase coreless coil winding.

9. An electric machine as claimed in claim 8, characterized in that: the inner end face of the inner core is concavely provided with a jack, and one end, far away from the end ring, of the collet is provided with an insert inserted into the jack.

10. An electric machine as claimed in claim 8, characterized in that: the three-phase hollow cup coil winding is characterized in that a limiting piece arranged opposite to one collet is convexly arranged on the inner side of the limiting piece, a limiting groove is formed by enclosing one side of the limiting piece, the limiting piece and the collet, the other end of the three-phase hollow cup coil winding is inserted into the limiting groove, and a space is formed between the other side of the limiting piece and the outer side wall of the magnetic ring; the rotating clearance is 0.5mm-0.8 mm; a second bearing is arranged between the limiting pieces of the limiting blocks, and one end of the rotating shaft penetrates through the magnetic ring and then is inserted into the inner ring of the second bearing.