CN213185843U - Axial magnetic field motor - Google Patents
Axial magnetic field motor Download PDFInfo
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- CN213185843U CN213185843U CN202022230852.3U CN202022230852U CN213185843U CN 213185843 U CN213185843 U CN 213185843U CN 202022230852 U CN202022230852 U CN 202022230852U CN 213185843 U CN213185843 U CN 213185843U
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Abstract
The utility model relates to a motor field specifically relates to an axial magnetic field motor, include: a housing; the main shaft penetrates through the center of the shell; the stator is arranged in the shell, coaxially sleeved on the main shaft and fixedly connected with the main shaft; the two rotors are respectively arranged on two sides of the stator in the axial direction, the adjacent parts of the two rotors have opposite magnetic poles, and the rotors are fixedly connected with the shell or are an integrated piece; the stator is the coil winding of multilayer printed circuit board preparation, and casing or rotor rotate with the main shaft and be connected, leaves the clearance between the inner wall of casing and the outer wall of stator, has seted up at least one oil groove on the inner wall that the casing is close to stator both ends face, and the longitudinal section of oil groove is the annular shape, and the oil groove is coaxial with the stator. Compared with the prior art, the utility model, its volume is thin, light in weight, starting torque is low, output torque is big to frictional force between casing and the rotor is little, is applicable to some special work scenes.
Description
Technical Field
The utility model relates to the field of electric machines, specifically relate to an axial magnetic field motor.
Background
The axial magnetic field motor is different from a common motor in that the magnetic flux direction is axial, current-carrying conductors are arranged in the radial direction, and a stator core and a rotor core are of a disc structure.
Chinese patent CN201721262385.4 discloses a motor, which comprises a stator, a rotor, a rotating shaft and a housing, wherein the rotating shaft passes through the centers of the stator, the rotor and the housing, the stator and the rotor are arranged inside the housing, the stator is fixed on the rotating shaft, the rotor is located at two sides of the stator, and the magnetic poles of the adjacent surfaces are opposite; the shell comprises a first shell and a second shell which are matched and connected, the first shell and the second shell are sleeved at two ends of the rotating shaft through bearings respectively, and the rotor is fixed on the shell at one corresponding side respectively.
The motor disclosed in this patent has a casing close to the rotor, and the rotor is likely to rub against the casing when rotating at high speed, thereby generating high heat and reducing the service life of the rotor.
SUMMERY OF THE UTILITY MODEL
For solving above-mentioned technical problem, an axial magnetic field motor is provided, the utility model discloses compare in prior art, its thin, light in weight, starting torque are low, output torque is big to frictional force between casing and the rotor is little, is applicable to some special work scenes.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
an axial field electric machine comprising:
a housing;
the main shaft penetrates through the center of the shell;
the stator is arranged in the shell, coaxially sleeved on the main shaft and fixedly connected with the main shaft;
the two rotors are arranged in the shell and are respectively arranged on two sides of the stator in the axial direction, the adjacent parts of the two rotors have opposite magnetic poles, and the rotors are fixedly connected with the shell or are an integrated piece;
the stator is a coil winding made of multilayer printed circuit boards, the shell or the rotor is rotationally connected with the main shaft, a gap is reserved between the inner wall of the shell and the outer wall of the stator, at least one oil groove is formed in the inner wall, close to the two end faces of the stator, of the shell, the longitudinal section of the oil groove is in a ring shape, and the oil groove is coaxial with the stator.
Preferably, the housing includes:
a first half shell disposed at one side of the stator;
the second half shell is arranged on the other side of the stator, and the first half shell is fixedly connected with the second half shell;
the bearings are provided with two bearings, the outer rings of the two bearings are fixedly installed at the central parts of the first half shell and the second half shell respectively, and the inner rings of the two bearings are sleeved on the main shaft.
Preferably, the stator further comprises a connecting member for fixedly connecting the main shaft and the stator, the connecting member comprising:
the mounting part is in a polygon prism shape with an axial through hole, the mounting part is sleeved on the main shaft and is in transmission connection with the main shaft, and the stator is sleeved on the mounting part and is in transition fit with the mounting part;
the positioning parts are two in shape of a disc with an axial through hole, are sleeved on the main shaft and are fixedly connected with the main shaft, the two positioning parts are respectively arranged on two sides of the mounting part, the two positioning parts are respectively abutted against two end faces of the stator, the positioning parts are fixedly connected with the main shaft, and the mounting part and one positioning part are an integrated part.
Preferably, the connector comprises:
the first sleeve is sleeved on the main shaft and positioned on one side of the stator, a socket is arranged on one surface, facing the stator, of the first sleeve, a first through hole penetrating through the first sleeve in the radial direction is formed in the first sleeve, and a first pin hole coaxial with the first through hole is formed in the main shaft;
the second sleeve is sleeved on the main shaft and positioned on the other side of the stator, a bell mouth connected with the first through hole in a socket mode is arranged on one surface, facing the stator, of the second sleeve, a second through hole penetrating through the second sleeve in the radial direction is formed in the second sleeve, and a second pin hole coaxial with the second through hole is formed in the main shaft; the axial length of the socket is greater than the axial depth of the socket, a polygonal column surface clamped between the first sleeve and the second sleeve is sleeved on the part, located outside the socket, of the socket, and the polygonal column surface and the socket are integrated;
and a key, one part of which is embedded in the outer wall of the main shaft, and the other part of which is embedded in the inner walls of the first sleeve and the second sleeve.
Preferably, the stator is connected with a power supply, the spindle is provided with an inclined hole which obliquely penetrates through the spindle and is used for passing through a power line, one end of the inclined hole is positioned on the outer circumferential surface of the spindle and is positioned on the outer side of the shell, and the other end of the inclined hole is positioned on the outer circumferential surface of the spindle and is positioned between the shell and the stator.
Compared with the prior art, the utility model beneficial effect who has is:
1. compared with the prior art, the utility model, the coil winding that uses multilayer printed circuit board preparation has cancelled the iron core that ordinary motor used as the stator, has alleviateed weight, reduces starting torque for the thickness of motor is thinner, is applicable to some special places.
2. Compared with the prior art, the utility model, be provided with the oil groove that is used for filling lubricating grease between casing and stator, reduced casing and the rotatory resistance of rotor effectively.
Drawings
Fig. 1 is a front view of the present invention;
FIG. 2 is a cross-sectional view at section A-A of FIG. 1;
FIG. 3 is a partial enlarged view of FIG. 2 at B;
fig. 4 is an exploded perspective view of the present invention;
fig. 5 is a perspective view of the spindle and the spindle sleeve of the present invention;
fig. 6 and 7 are exploded perspective views of the shaft sleeve of the present invention from two different viewing angles;
fig. 8 is a perspective view of the main shaft of the present invention;
the reference numbers in the figures are:
1-a shell; 1 a-an oil sump; 1 b-a first half-shell; 1 c-a second half-shell; 1 d-a bearing;
2-a main shaft; 2 a-inclined hole; 2 b-a first pin hole; 2 c-a second pin hole;
3-a stator;
4-a rotor; 4 a-a permanent magnet; 4 b-a back plate;
5-a connector; 5 a-a first sleeve; 5a 1-socket; 5a2 — first via; 5a 3-polygonal prism surface; 5 b-a second sleeve; 5b 1-socket; 5b2 — second via; 5 c-bond.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
As shown in fig. 1, 2 and 4, an axial field motor includes:
a housing 1;
the main shaft 2, the main shaft 2 runs through the center of the shell 1;
the stator 3 is arranged inside the shell 1, the stator 3 is coaxially sleeved on the main shaft 2, and the stator 3 is fixedly connected with the main shaft 2;
two rotors 4 are arranged in the shell 1 and are respectively arranged at two sides of the stator 3 in the axial direction, the adjacent parts of the two rotors 4 have opposite magnetic poles, and the rotors 4 are fixedly connected with the shell 1 or are an integral piece;
the stator 3 is a coil winding made of a multilayer printed circuit board, the shell 1 or the rotor 4 is rotatably connected with the main shaft 2, a gap is reserved between the inner wall of the shell 1 and the outer wall of the stator 3, at least one oil groove 1a is formed in the inner wall, close to the two end faces of the stator 3, of the shell 1, the longitudinal section of the oil groove 1a is in a ring shape, and the oil groove 1a is coaxial with the stator 3.
The oil groove 1a is filled with solid grease, thereby reducing the frictional force between the housing 1 and the stator 3. As shown in fig. 2, the housing 1 is rotatably connected to the main shaft 2 by a bearing. As shown in fig. 4, the rotor 4 includes a permanent magnet 4a and a back plate 4b, the back plate 4b is in a disc shape, the back plate 4b is coaxial with the main shaft 2, the back plate 4b is fixedly connected with the housing 1, an avoiding through hole for avoiding the main shaft 2 is provided at the axis of the back plate 4b, the permanent magnet 4a is provided in a plurality, the permanent magnets 4a are uniformly distributed around the axis of the back plate 4b and fixedly mounted on one surface of the back plate 4b close to the stator 3, and the magnetic poles of the two adjacent permanent magnets 4a belonging to the two rotors 4 are opposite. After the stator 3 is electrified, the magnetic field between the two adjacent permanent magnets 4a is changed through the coil windings of the stator, the plurality of permanent magnets 4a work together to enable the rotor 4 to rotate, the two rotors 4 are fixedly connected through the shell 1, so that the two rotors 4 and the shell 1 rotate synchronously, and the shell 1 outputs torque outwards.
The working principle is as follows: after the stator 3 is electrified, the magnetic field between two adjacent rotors 4 is changed through the coil windings of the stator, so that the rotors 4 rotate, the two rotors 4 are fixedly connected through the shell 1, the two rotors 4 and the shell 1 rotate synchronously, and the shell 1 outputs torque outwards.
As shown in fig. 2, the housing 1 includes:
a first half-shell 1b arranged on one side of the stator 3;
the second half shell 1c is arranged on the other side of the stator 3, and the first half shell 1b is fixedly connected with the second half shell 1 c;
the two bearings 1d are provided, outer rings of the two bearings 1d are respectively and fixedly installed at the central parts of the first half shell 1b and the second half shell 1c, and inner rings of the two bearings 1d are sleeved on the main shaft 2.
The working principle of the housing 1 is as follows: as shown in fig. 3, the end of the first half-shell 1b is provided with a socket, the end of the second half-shell 1c is provided with a socket, the first half-shell 1b and the second half-shell 1c are connected in a socket-and-spigot manner and are tightly fitted, the first half-shell 1b and the second half-shell 1c can also be fixedly connected by bolts, and the main shaft 2 is rotatably mounted in the center of the housing 1 by a bearing 1 d.
As shown in fig. 2 and 5, the present invention further includes a connecting member 5 for fixedly connecting the main shaft 2 and the stator 3, wherein the connecting member 5 includes:
the mounting part is in a polygon prism shape with an axial through hole, the mounting part is sleeved on the main shaft 2 and is in transmission connection with the main shaft 2, and the stator 3 is sleeved on the mounting part and is in transition fit with the mounting part;
the positioning portions are two in number, are in a disc shape with an axial through hole, are sleeved on the main shaft 2 and are fixedly connected with the main shaft 2, the two positioning portions are arranged on two sides of the mounting portion respectively, the two positioning portions are abutted to two end faces of the stator 3 respectively, the positioning portions are fixedly connected with the main shaft 2, and the mounting portion and one positioning portion are an integral piece.
Working principle of the mounting part and the positioning part: the installation department is hexagonal prism shape, is provided with on the stator 3 with location portion transition fit's hexagonal hole, stator 3 passes through installation department fixed mounting on main shaft 2, under the prerequisite that main shaft 2 does not change, stator 3 also can not rotate, location portion is used for supporting tight stator 3's both ends face, avoids stator 3 to produce axial displacement.
The installation part and the positioning part are fixedly connected with the main shaft 2 through bolts, and the installation part and the positioning part can also be fixedly connected with the main shaft 2 through clamp springs.
As shown in fig. 6 and 7, the connecting member 5 includes:
the first sleeve 5a is sleeved on the main shaft 2 and located on one side of the stator 3, a socket 5a1 is arranged on one surface, facing the stator 3, of the first sleeve 5a, a first through hole 5a2 penetrating the first sleeve 5a in the radial direction is arranged on the first sleeve 5a, and a first pin hole 2b coaxial with the first through hole 5a2 is arranged on the main shaft 2;
the second sleeve 5b is sleeved on the main shaft 2 and is positioned on the other side of the stator 3, a bell mouth 5b1 in socket connection with the first through hole 5a2 is arranged on one surface, facing the stator 3, of the second sleeve 5b, a second through hole 5b2 penetrating through the second sleeve 5b in the radial direction is arranged on the second sleeve 5b, and a second pin hole 2c coaxial with the second through hole 5b2 is arranged on the main shaft 2; the axial length of the socket 5a1 is greater than the axial depth of the socket 5b1, the part of the socket 5a1, which is positioned outside the socket 5b1, is sleeved with a polygonal column surface 5a3 clamped between the first sleeve 5a and the second sleeve 5b, and the polygonal column surface 5a3 and the socket 5a1 are integrated;
and a key 5c, wherein one part of the key 5c is embedded in the outer wall of the main shaft 2, and the other part of the key 5c is embedded in the inner walls of the first sleeve 5a and the second sleeve 5 b.
The working principle of the first sleeve 5a, the second sleeve 5b and the key 5 c: the socket 5a1, the polygonal column surface 5a3 and the key 5c are combined to form a mounting part, the stator 3 is fixedly mounted on the spindle 2 through the polygonal column surface 5a3, the first sleeve 5a and the second sleeve 5b are two positioning parts respectively, the first sleeve 5a passes through the first through hole 5a2 and the first pin hole 2b through a pin and is fixedly connected with the spindle 2, so that the axial movement of the first sleeve 5a is limited, the second sleeve 5b sequentially passes through the second through hole 5b2 and the second pin hole 2c through a pin and is fixedly connected with the spindle 2, so that the axial movement of the second sleeve 5b is limited, and further the stator 3 limits the axial movement of the stator itself through the first sleeve 5a and the second sleeve 5 b.
As shown in fig. 2, the stator 3 is connected to a power supply, an inclined hole 2a is formed in the spindle 2 and obliquely penetrates through the spindle 2 and is used for passing through a power supply line, one end of the inclined hole 2a is located on the outer circumferential surface of the spindle 2 and is located on the outer side of the housing 1, and the other end of the inclined hole 2a is located on the outer circumferential surface of the spindle 2 and is located between the housing 1 and the stator 3.
In the existing motor, a power line axially penetrates through a main shaft, then radially penetrates out of a joint of the main shaft and a stator, and is further electrically connected with the stator, so that the power line needs to penetrate through a narrow gap between the main shaft and the stator, on one hand, the assembly is very difficult, on the other hand, the power line needs to be positioned outside the end part of the main shaft, and if a frame for fixing the main shaft is of a sealing structure, the power line is not allowed to be inserted into the end part of the main shaft from the outside of the frame, and the. And the power cord of this motor need not to penetrate inside the main shaft from the outside of the frame that is used for fixed main shaft to need not to wear out from the narrow clearance between main shaft and the stator, make the installation and the assembly of this motor simpler, nimble, free.
The utility model discloses a theory of operation:
after a power line penetrates through the inclined hole 2a and is electrically connected with the stator 3, the stator 3 changes a magnetic field between two adjacent permanent magnets 4a through a coil winding of the stator, the plurality of permanent magnets 4a work together to enable the rotor 4 to rotate, the two rotors 4 are fixedly connected through the shell 1, so that the two rotors 4 and the shell 1 rotate synchronously, the shell 1 outputs torque outwards, and the friction force between the shell 1 and the rotors 4 is reduced through solid lubricating grease filled in the oil groove 1 a.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. An axial field electric machine comprising:
a housing (1);
the main shaft (2), the main shaft (2) runs through the center of the shell (1);
the stator (3) is arranged in the shell (1), the stator (3) is coaxially sleeved on the main shaft (2), and the stator (3) is fixedly connected with the main shaft (2);
the two rotors (4) are arranged in the shell (1) and are respectively arranged on two sides of the stator (3) in the axial direction, the adjacent parts of the two rotors (4) have opposite magnetic poles, and the rotors (4) are fixedly connected with the shell (1) or are an integral piece;
the motor is characterized in that the stator (3) is a coil winding made of a multilayer printed circuit board, the shell (1) or the rotor (4) is rotatably connected with the spindle (2), a gap is reserved between the inner wall of the shell (1) and the outer wall of the stator (3), at least one oil groove (1a) is formed in the inner wall, close to the two end faces of the stator (3), of the shell (1), the longitudinal section of the oil groove (1a) is in a ring shape, and the oil groove (1a) is coaxial with the stator (3).
2. An axial field electrical machine according to claim 1, wherein the housing (1) comprises:
a first half-shell (1b) arranged on one side of the stator (3);
the second half shell (1c) is arranged on the other side of the stator (3), and the first half shell (1b) is fixedly connected with the second half shell (1 c);
the two bearings (1d) are provided, the outer rings of the two bearings (1d) are fixedly installed at the central parts of the first half shell (1b) and the second half shell (1c) respectively, and the inner rings of the two bearings (1d) are sleeved on the main shaft (2).
3. An axial field machine according to claim 1, further comprising a connection member (5) for fixedly connecting the main shaft (2) and the stator (3), the connection member (5) comprising:
the mounting part is in a polygon prism shape with an axial through hole, the mounting part is sleeved on the main shaft (2) and is in transmission connection with the main shaft (2), and the stator (3) is sleeved on the mounting part and is in transition fit with the mounting part;
the positioning portions are two in number, the positioning portions are in a disc shape with axial through holes, the positioning portions are sleeved on the main shaft (2) and fixedly connected with the main shaft (2), the two positioning portions are arranged on two sides of the mounting portion respectively, the two positioning portions are abutted to two end faces of the stator (3) respectively, the positioning portions are fixedly connected with the main shaft (2), and the mounting portion and one positioning portion are an integral piece.
4. An axial field machine according to claim 3, characterized in that the connection piece (5) comprises:
the motor stator comprises a main shaft (2), a first sleeve (5a), a socket (5a1) and a first pin hole (2b), wherein the first sleeve (5a) is sleeved on the main shaft (2) and located on one side of a stator (3), one surface, facing the stator (3), of the first sleeve (5a) is provided with a socket (5a1), the first sleeve (5a) is provided with a first through hole (5a2) which radially penetrates through the first sleeve (5a), and the main shaft (2) is provided with a first pin hole (2b) which is coaxial with the first through hole (5a 2);
the second sleeve (5b) is sleeved on the main shaft (2) and located on the other side of the stator (3), a bell mouth (5b1) connected with the first through hole (5a2) in a socket mode is arranged on one surface, facing the stator (3), of the second sleeve (5b), a second through hole (5b2) penetrating through the second sleeve (5b) in the radial direction is arranged on the second sleeve (5b), and a second pin hole (2c) coaxial with the second through hole (5b2) is arranged on the main shaft (2); the axial length of the socket (5a1) is greater than the axial depth of the socket (5b1), the part of the socket (5a1) located outside the socket (5b1) is sleeved with a polygonal column surface (5a3) clamped between the first sleeve (5a) and the second sleeve (5b), and the polygonal column surface (5a3) and the socket (5a1) are integrated;
and the key (5c), one part of the key (5c) is embedded and installed on the outer wall of the main shaft (2), and the other part of the key (5c) is embedded and installed on the inner walls of the first sleeve (5a) and the second sleeve (5 b).
5. An axial magnetic field motor according to claim 1, wherein the stator (3) is connected to a power supply, the main shaft (2) is provided with an inclined hole (2a) which obliquely penetrates through the main shaft (2) and is used for passing through a power supply line, one end of the inclined hole (2a) is arranged on the outer circumferential surface of the main shaft (2) and is positioned on the outer side of the housing (1), and the other end of the inclined hole (2a) is arranged on the outer circumferential surface of the main shaft (2) and is positioned between the housing (1) and the stator (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022230852.3U CN213185843U (en) | 2020-10-09 | 2020-10-09 | Axial magnetic field motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022230852.3U CN213185843U (en) | 2020-10-09 | 2020-10-09 | Axial magnetic field motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213185843U true CN213185843U (en) | 2021-05-11 |
Family
ID=75778247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022230852.3U Active CN213185843U (en) | 2020-10-09 | 2020-10-09 | Axial magnetic field motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213185843U (en) |
-
2020
- 2020-10-09 CN CN202022230852.3U patent/CN213185843U/en active Active
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