CN215498689U - Double-rotor brushless coreless motor - Google Patents
Double-rotor brushless coreless motor Download PDFInfo
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- CN215498689U CN215498689U CN202121603274.1U CN202121603274U CN215498689U CN 215498689 U CN215498689 U CN 215498689U CN 202121603274 U CN202121603274 U CN 202121603274U CN 215498689 U CN215498689 U CN 215498689U
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- coreless motor
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Abstract
The utility model relates to a double-rotor brushless coreless motor which comprises a machine shell, a rotor assembly and a coil assembly, wherein the rotor assembly and the coil assembly are matched with each other and are contained in the machine shell; the rotor assembly comprises a driving shaft, a first magnetic steel and a second magnetic steel which are sequentially arranged on the radial outer periphery of the driving shaft, and the outer periphery of the first magnetic steel is matched with the inner periphery of the second magnetic steel to form a positioning space; the coil component comprises a wire cup support and a wire cup, one end of the wire cup is installed on the wire cup support, and the other end of the wire cup extends into the positioning space. The double-rotor brushless coreless motor has the advantages of no iron core eddy current loss, high efficiency, no torque pulsation and the like.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a double-rotor brushless coreless motor.
Background
Along with the development of motor technology, the motor is more and more concerned by the market in terms of high efficiency and energy conservation, and the traditional iron core motor has larger iron core eddy current loss.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an improved double-rotor brushless coreless motor.
The technical scheme adopted by the utility model for solving the technical problems is as follows: a double-rotor brushless coreless motor is constructed and comprises a machine shell, a rotor assembly and a coil assembly, wherein the rotor assembly and the coil assembly are mutually matched and contained in the machine shell;
the rotor assembly comprises a driving shaft, a first magnetic steel and a second magnetic steel which are sequentially arranged on the radial outer periphery of the driving shaft, and the outer periphery of the first magnetic steel is matched with the inner periphery of the second magnetic steel to form a positioning space;
the coil component comprises a wire cup support and a wire cup, one end of the wire cup is installed on the wire cup support, and the other end of the wire cup extends into the positioning space.
Preferably, the rotor assembly comprises a cylindrical fixing frame, the driving shaft axially penetrates through the fixing frame, and the first magnetic steel and the second magnetic steel are contained in the fixing frame.
Preferably, the fixing frame comprises a bottom wall and a peripheral wall formed by extending the peripheral edge of the bottom wall upwards; the first magnetic steel is sleeved on a section of the driving shaft located in the fixing frame, and the second magnetic steel is arranged in the peripheral wall.
Preferably, the bottom wall is provided with a through hole penetrating through the axial opposite side surfaces of the bottom wall, a positioning part extends inwards from the periphery of the through hole, the driving shaft is sleeved with the first magnetic steel, and the end part of the first magnetic steel abuts against the axial side surface of the positioning part;
the peripheral wall is provided with a positioning groove, and the second magnetic steel is embedded or inserted in the positioning groove.
Preferably, the first magnetic steel and the second magnetic steel are both of annular structures;
the length of first magnet steel is less than the length of second magnet steel, first magnet steel is kept away from the tip of diapire with the second magnet steel is kept away from the tip parallel and level of diapire.
Preferably, the wire cup support is provided with a first through hole penetrating through the axially opposite side surfaces of the wire cup support;
the driving shaft penetrates through the first through hole, and a section of periphery in the first through hole is sleeved with a first shaft sleeve;
and a section of the driving shaft protruding out of the bottom wall is sleeved with a second shaft sleeve.
Preferably, the dual-rotor brushless coreless motor further comprises an end cover assembly for limiting the coil assembly and the rotor assembly in the casing;
the end cover assembly comprises a front end cover arranged on the axial outer side of the fixing frame and a rear end cover arranged on the axial outer side of the line cup support, and the driving shaft sequentially axially penetrates through the front end cover, the fixing frame, the line cup support and the rear end cover.
Preferably, the front end housing includes the front end housing main part, the front end housing main part is equipped with the second via hole that runs through its axial looks lateral surface mutually, the second is equipped with first mounting groove in the via hole, the drive shaft is located one section periphery cover in the first mounting groove is equipped with first bearing, first mounting groove towards the inner wall of the radial side of first bearing is equipped with first recess, be equipped with first damping ring in the first recess.
Preferably, the rear end cap includes the rear end cap main part, the rear end cap main part is equipped with the third via hole that runs through its axial looks lateral surface mutually, be equipped with the second mounting groove in the third via hole, the drive shaft is located one section periphery cover in the second mounting groove is equipped with the second bearing, the second mounting groove towards the inner wall of the radial side of second bearing is equipped with the second recess, be equipped with the second damping ring in the second recess.
Preferably, a pre-tightening wave pad is further arranged in the second mounting groove;
one end of the pre-tightening wave pad is abutted against the axial side face, far away from the wire cup support, of the second bearing, and the other end of the pre-tightening wave pad is abutted against the axial inner wall of the second mounting groove.
The implementation of the utility model has the following beneficial effects: the double-rotor brushless coreless motor has the advantages of no iron core eddy current loss, high efficiency, no torque pulsation and the like.
Drawings
The utility model will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic view of a dual rotor brushless coreless motor according to the present invention, shown in a first view;
FIG. 2 is a schematic structural diagram of a dual rotor brushless coreless motor of the present invention at a second perspective;
FIG. 3 is a cross-sectional view of a dual rotor brushless coreless motor of the present invention;
FIG. 4 is a schematic illustration of a static magnetic field of a dual rotor brushless coreless motor of the present invention;
FIG. 5 is a schematic view of a rotor assembly of the present invention from a perspective;
FIG. 6 is a schematic view of the rotor assembly of the present invention from another perspective;
FIG. 7 is a schematic structural view of a coil assembly of the present invention;
FIG. 8 is a schematic view of the front end cap of the present invention from a perspective;
FIG. 9 is a schematic view of the front end cap of the present invention from another perspective;
FIG. 10 is a schematic view of the rear end cap of the present invention from a perspective;
FIG. 11 is a schematic structural view of the rear end cap of the present invention from another perspective;
fig. 12 is a schematic diagram of the construction of a pre-tensioned wave pad of the present invention.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the following description, it is to be understood that the orientations and positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "lateral", "vertical", "horizontal", "top", "bottom", "inner", "outer", "leading", "trailing", and the like are configured and operated in specific orientations based on the orientations and positional relationships shown in the drawings, and are only for convenience of describing the present invention, and do not indicate that the device or element referred to must have a specific orientation, and thus, are not to be construed as limiting the present invention.
It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or intervening elements may also be present. The terms "first", "second", "third", etc. are only for convenience in describing the present technical solution, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1-3, the present invention relates to a dual-rotor brushless coreless motor, which includes a housing 1, a rotor assembly 2 and a coil assembly 3, wherein the rotor assembly 2 and the coil assembly 3 are mutually engaged and accommodated in the housing 1.
Wherein, rotor subassembly 2 includes drive shaft 22, locates drive shaft 22 radial periphery's first magnet steel 23 and second magnet steel 24 in proper order, and the periphery of first magnet steel 23 and the interior circumference of second magnet steel 24 mutually support and form the location space.
The coil assembly 3 includes a bobbin holder 31, and a bobbin 32 having one end mounted to the bobbin holder 31 and the other end extended to fit into the positioning space.
As shown in fig. 4, the first magnetic steel 23 and the second magnetic steel 24 can form any static magnetic field, and the static magnetic field enables the motor to operate under the interaction of the energized wire cup 32.
In the embodiment, the casing 1 is a hollow cylindrical structure, such as a cylinder structure, and an inner cavity thereof forms an accommodating space for the rotor assembly 2 and the coil assembly 3 to be installed. The casing 1 is made of metal, such as stainless steel, and of course, the structural shape, size and material of the casing 1 can be selected according to the requirement, and is not limited specifically here.
As shown in fig. 5-6, the rotor assembly 2 includes a cylindrical fixing frame 21, the driving shaft 22 axially penetrates through the fixing frame 21, and the first magnetic steel 23 and the second magnetic steel 24 are both accommodated in the fixing frame 21.
Further, the fixing frame 21 is a cylindrical structure and has an opening, the opening is disposed facing one side of the coil assembly 3, the fixing frame 21 includes a bottom wall 211 and a peripheral wall 212 formed by extending a peripheral edge of the bottom wall 211 upwards, the first magnetic steel 23 is sleeved on a section of the driving shaft 22 located in the fixing frame 21, and the second magnetic steel 24 is disposed in the peripheral wall 212.
Further, the bottom wall 211 is provided with a through hole penetrating through the opposite axial side surfaces thereof, a positioning portion 213 extends inward along the circumference of the through hole, the first magnetic steel 23 is sleeved on the driving shaft 22, and the end portion of the first magnetic steel abuts against the axial side surface of the positioning portion 213, it can be understood that the positioning portion 213 is of a cylindrical structure, further, the inner wall of the positioning portion 213 is provided with a bushing 27 sleeved on the periphery of the driving shaft 22, preferably, the inner wall of the positioning portion 213 extends along the axial direction thereof with a protruding portion, and the bushing 27 is correspondingly provided with a nesting groove matched with the protruding portion. Or the cross-section of the bush 27 is arcuate.
Preferably, this perisporium 212 is equipped with the constant head tank, and second magnet steel 24 inlays to establish or cartridge in the constant head tank, if this second magnet steel 24 can be cartridge to this constant head tank in, convenient change operation, the constant head tank can be the annular groove, and it has an opening, and this second magnet steel 24 is packed into the constant head tank from this opening. Of course, the second magnetic steel 24 may be embedded and fixed in the positioning groove, so as to improve the installation stability, and of course, in other embodiments, the second magnetic steel 24 may also be attached to the inner periphery of the peripheral wall 212.
Further, the first magnetic steel 23 and the second magnetic steel 24 are both of an annular structure or a tubular structure.
Preferably, the length of the first magnetic steel 23 is smaller than that of the second magnetic steel 24, and the end of the first magnetic steel 23 far away from the bottom wall 211 is flush with the end of the second magnetic steel 24 far away from the bottom wall 211.
As shown in fig. 3, 7 and 8, in the present embodiment, the wire cup holder 31 extends to the rotor assembly 2 to form a slot, the wire cup 32 is of an annular structure, one end of the wire cup 32 is installed in the slot, the other end of the wire cup is installed in the positioning space, a certain gap is reserved between the inner circumference of the wire cup 32 and the first magnetic steel 23, and a certain gap is reserved between the outer circumference of the wire cup 32 and the inner circumference of the second magnetic steel 24 (or the inner circumference of the circumferential wall 212).
Further, the wire cup holder 31 is provided with a first through hole 311 penetrating through the axial opposite side surfaces of the wire cup holder, the driving shaft 22 penetrates through the first through hole 311, a first shaft sleeve 25 is sleeved on a section of the periphery of the driving shaft 22 located in the first through hole 311, and a second shaft sleeve 26 is sleeved on a section of the driving shaft 22 protruding out of the bottom wall 211.
As shown in fig. 3, 8-12, the dual-rotor brushless coreless motor further includes an end cap assembly for limiting the coil assembly 3 and the rotor assembly 2 in the housing 1.
The end cover assembly comprises a front end cover 4 arranged on the axial outer side of the fixing frame 21 and a rear end cover 5 arranged on the axial outer side of the wire cup support 31, and the driving shaft 22 sequentially axially penetrates through the front end cover 4, the fixing frame 21, the wire cup 32 support and the rear end cover 5.
In this embodiment, a part of the front end cover 4 is accommodated in the casing 1, and may be fixed by interference fit or by screwing, and of course, other fixing and mounting manners may also be adopted, which are not specifically limited herein.
This front end housing 4 includes front end housing body 41, front end housing body 41 is equipped with the second via hole 411 that runs through its axial looks downside, be equipped with first mounting groove 412 in the second via hole 411, one section periphery cover that drive shaft 22 is located first mounting groove 412 is equipped with first bearing 42, first mounting groove 412 is equipped with first recess 413 towards the inner wall of the radial side of first bearing 42, be equipped with first damping ring 43 in the first recess 413, the radial medial surface of this first damping ring 43 hugs closely on first bearing 42. The radial side of the first bearing 42 abuts the second sleeve 26.
Further, a part of the rear end cover 5 is accommodated in the casing 1, and may be fixed by interference fit or by screwing, and of course, other fixing and mounting manners may also be adopted, which are not specifically limited herein.
Further, this rear end cover 5 includes rear end cover main part 51, rear end cover main part 51 is equipped with the third via hole 511 that runs through its axial looks opposite sides, be equipped with second mounting groove 512 in the third via hole 511, one section periphery cover that drive shaft 22 is located in second mounting groove 512 is equipped with second bearing 52, second mounting groove 512 is equipped with second recess 513 towards the inner wall of the radial side of second bearing 52, be equipped with second damping ring 53 in the second recess 513, the radial medial surface of this second damping ring 53 hugs closely on second bearing 52. The radial side of the second bearing 52 abuts the first sleeve 25.
As shown in fig. 12, a pre-tightening wave pad 54 is further disposed in the second mounting groove 512, one end of the pre-tightening wave pad 54 abuts against an axial side surface of the second bearing 52 away from the wire cup holder 31, and the other end abuts against an axial inner wall of the second mounting groove 512.
Further, the rear cover main body 51 is fixed to the wire cup holder 31 by a fastener including a bolt, a screw, a cylindrical pin, and the like.
The double-rotor brushless coreless motor has the advantages of no iron core eddy current loss, high efficiency, no torque pulsation and the like.
The application also discloses motor equipment, which comprises the double-rotor brushless coreless motor, and can also comprise an actuating mechanism, a power supply and the like, wherein the actuating mechanism is sleeved with the driving shaft 22.
It is to be understood that the foregoing examples, while indicating the preferred embodiments of the utility model, are given by way of illustration and description, and are not to be construed as limiting the scope of the utility model; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several changes and modifications can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.
Claims (10)
1. A double-rotor brushless coreless motor is characterized by comprising a machine shell (1), a rotor assembly (2) and a coil assembly (3), wherein the rotor assembly (2) and the coil assembly (3) are matched with each other and are contained in the machine shell (1);
the rotor assembly (2) comprises a driving shaft (22), a first magnetic steel (23) and a second magnetic steel (24) which are sequentially arranged on the radial periphery of the driving shaft (22), and the periphery of the first magnetic steel (23) is matched with the inner periphery of the second magnetic steel (24) to form a positioning space;
the coil component (3) comprises a wire cup support (31) and a wire cup (32) with one end installed on the wire cup support (31) and the other end extending into the positioning space.
2. The dual-rotor brushless coreless motor according to claim 1, wherein the rotor assembly (2) includes a cylindrical fixing frame (21), the driving shaft (22) axially penetrates through the fixing frame (21), and the first magnetic steel (23) and the second magnetic steel (24) are both accommodated in the fixing frame (21).
3. The dual rotor brushless coreless motor of claim 2, wherein the holder (21) includes a bottom wall (211), a peripheral wall (212) formed by the bottom wall (211) extending upward from a periphery thereof; the first magnetic steel (23) is sleeved on a section of the driving shaft (22) located in the fixing frame (21), and the second magnetic steel (24) is arranged in the peripheral wall (212).
4. The dual-rotor brushless coreless motor of claim 3, wherein the bottom wall (211) is provided with a through hole penetrating through opposite axial sides of the bottom wall, a positioning portion (213) extends inward along a circumference of the through hole, the first magnetic steel (23) is sleeved on the driving shaft (22) and an end portion of the first magnetic steel abuts against an axial side of the positioning portion (213);
the peripheral wall (212) is provided with a positioning groove, and the second magnetic steel (24) is embedded or inserted in the positioning groove.
5. The dual rotor brushless coreless motor of claim 3 or 4, wherein the first magnetic steel (23) and the second magnetic steel (24) are both ring-shaped structures;
the length of first magnet steel (23) is less than the length of second magnet steel (24), first magnet steel (23) are kept away from the tip of diapire (211) with second magnet steel (24) are kept away from the tip parallel and level of diapire (211).
6. The dual rotor brushless coreless motor of claim 3 or 4, wherein the bobbin holder (31) is provided with first through holes (311) through axially opposite sides thereof;
the driving shaft (22) penetrates through the first through hole (311), and a first shaft sleeve (25) is sleeved on the periphery of one section of the driving shaft positioned in the first through hole (311);
the section of the driving shaft (22) protruding out of the bottom wall (211) is sleeved with a second shaft sleeve (26).
7. The dual rotor brushless coreless motor of claim 6, further comprising an end cap assembly for retaining the coil assembly (3) and the rotor assembly (2) within the housing (1);
the end cover assembly comprises a front end cover (4) arranged on the outer side of the axial direction of the fixing frame (21) and a rear end cover (5) arranged on the outer side of the axial direction of the wire cup support (31), and the driving shaft (22) sequentially penetrates through the front end cover (4), the fixing frame (21), the wire cup (32) frame and the rear end cover (5) in the axial direction.
8. The birotor brushless coreless motor according to claim 7, wherein the front cover (4) includes a front cover main body (41), the front cover main body (41) is provided with a second through hole (411) penetrating through axially opposite side surfaces of the front cover main body, a first mounting groove (412) is provided in the second through hole (411), a first bearing (42) is sleeved on a section of the periphery of the driving shaft (22) located in the first mounting groove (412), a first groove (413) is provided on an inner wall of the first mounting groove (412) facing to a radial side surface of the first bearing (42), and a first damping ring (43) is provided in the first groove (413).
9. The birotor brushless coreless motor according to claim 7, wherein the rear end cover (5) comprises a rear end cover main body (51), the rear end cover main body (51) is provided with third through holes (511) penetrating through axially opposite side surfaces of the rear end cover main body, a second mounting groove (512) is formed in the third through holes (511), a second bearing (52) is sleeved on a section of periphery of the driving shaft (22) located in the second mounting groove (512), a second groove (513) is formed in an inner wall of the second mounting groove (512) facing to a radial side surface of the second bearing (52), and a second damping ring (53) is arranged in the second groove (513).
10. The dual rotor brushless coreless motor of claim 9, wherein a pre-tensioned wave washer (54) is further disposed within the second mounting groove (512);
one end of the pre-tightening wave pad (54) is abutted against the axial side face, far away from the wire cup support (31), of the second bearing (52), and the other end of the pre-tightening wave pad is abutted against the axial inner wall of the second mounting groove (512).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121603274.1U CN215498689U (en) | 2021-07-14 | 2021-07-14 | Double-rotor brushless coreless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121603274.1U CN215498689U (en) | 2021-07-14 | 2021-07-14 | Double-rotor brushless coreless motor |
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| Publication Number | Publication Date |
|---|---|
| CN215498689U true CN215498689U (en) | 2022-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121603274.1U Active CN215498689U (en) | 2021-07-14 | 2021-07-14 | Double-rotor brushless coreless motor |
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| Country | Link |
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| CN (1) | CN215498689U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114884256A (en) * | 2022-07-07 | 2022-08-09 | 常州市昊升电机股份有限公司 | Brushless coreless motor convenient to assembly |
-
2021
- 2021-07-14 CN CN202121603274.1U patent/CN215498689U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114884256A (en) * | 2022-07-07 | 2022-08-09 | 常州市昊升电机股份有限公司 | Brushless coreless motor convenient to assembly |
| CN114884256B (en) * | 2022-07-07 | 2022-09-09 | 常州市昊升电机股份有限公司 | Brushless coreless motor convenient to assembly |
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