CN209982244U - Electric machine - Google Patents
Electric machine Download PDFInfo
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- CN209982244U CN209982244U CN201920921900.8U CN201920921900U CN209982244U CN 209982244 U CN209982244 U CN 209982244U CN 201920921900 U CN201920921900 U CN 201920921900U CN 209982244 U CN209982244 U CN 209982244U
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Abstract
The utility model relates to a motor, including base, stator assembly, axle sleeve, bearing, rotor assembly and spring, wherein, the base arch has the base fixed column can be right the stator assembly is fixing a position through setting up the concentricity is guaranteed to axle sleeve and bearing of lower extreme on the base fixed column, can effectively reduce the motor noise, and the pivot assembly utilizes simultaneously the spring increases the free clearance of axial, plays the pre-compaction effect simultaneously better cushioning operation drunkenness, plays the cushioning effect, has formed the motor that the operation is quiet, simple structure, compact.
Description
Technical Field
The utility model relates to the technical field of electric machines, especially, relate to a motor.
Background
With the improvement of living standard, safety and environmental protection are continuously paid attention globally, in order to reduce environmental pollution, save limited resources of the earth, improve energy utilization efficiency and achieve the purposes of energy conservation and emission reduction, the characteristics of the direct current brushless motor just meet the requirements of energy conservation, environmental protection, low noise and safety.
At present, the external rotor direct current brushless motor who uses considerable part vertical work in the market all can appear the stator and shift after using a period, and the stator rubs or the stifled commentaries on classics with the rotor, causes the noise increase, and the energy consumption rises, and the motor burns useless scheduling problem, and motor parts is more moreover, and the structure is complicated, and the cost is higher.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model discloses an aim at solves the defect that exists of motor among the prior art, provides a motor with multiple fixed knot constructs, has characteristics such as safe quiet, simple structure, energy-efficient.
An electric machine comprising:
the middle part of one end of the base is protruded with a base fixing column, the base fixing column is provided with an axial through hole, and the through hole is communicated with the other end of the base;
the stator assembly is fixedly arranged on the base, and the base fixing column penetrates through the stator assembly;
the shaft sleeve is fixedly arranged at one end, far away from the base, of the base fixing column and is coaxial with the base fixing column;
the bearing is arranged at the other end, opposite to the protruding end of the base fixing column, of the base and is coaxial with the base fixing column;
the rotor assembly comprises a rotating shaft, and one end of the rotating shaft sequentially penetrates through the shaft sleeve, the base fixing column and the bearing;
the spring retainer ring is fixedly arranged at one end of the rotating shaft penetrating through the base;
and the spring is sleeved on the rotating shaft and is positioned between the bearing and the spring retainer ring.
As a further improvement of the motor, a counter bore is formed in one end, far away from the base, of the base fixing column, and the shaft sleeve is fixedly arranged in the counter bore.
As a further improvement of the motor, one end of the base, facing the bearing, is provided with a groove, and the bearing is movably arranged in the groove.
As a further improvement of the motor, the outer surface of the base fixing column is provided with a draft angle, and the diameter of the draft angle gradually shrinks from one end close to the base to one end far away from the base.
As a further improvement of the above motor, the stator assembly includes a stator core and a core fixing bolt, an axial core positioning hole is provided in the middle of the stator core, the base fixing column is inserted into the core positioning hole, a first core fixing hole is further provided on the stator core, a second core fixing hole coaxially provided with the first core fixing hole is provided on the base, and the stator core is fixedly connected to the base by the core fixing bolt passing through the first core fixing hole and the second core fixing hole.
As a further improvement of the motor, the stator core is further provided with an axial positioning groove, and the base fixing column is provided with a positioning strip matched with the positioning groove.
As a further improvement of the motor, the end part of the base fixing column, which is far away from one end of the base, is also provided with a round angle.
As a further improvement of the motor, the base faces towards one end of the stator core, a step is further protruded from one end of the stator core and coaxial with the base fixing column, the step abuts against the stator core, and the second core fixing hole is formed in the step.
As a further improvement of the motor, the motor further comprises a switching power supply board, wherein the switching power supply board is arranged at one end, provided with the bearing, of the base, a fixing hook and a power supply board fixing hole are arranged on the base, one end of the switching power supply board is clamped on the fixing hook, and the other end of the switching power supply board is fixed on the base through the matching of a bolt and the power supply board fixing hole.
As a further improvement of the motor, the rotor assembly further comprises a magnetic yoke and a magnetic ring, the magnetic ring is fixedly arranged on the inner wall of the magnetic yoke, the magnetic yoke covers the stator assembly, a rotating shaft fixing column extends out of one end, far away from the base, of the magnetic yoke, and the rotating shaft fixing column is hollow and sleeved outside the rotating shaft.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
1. the motor includes base, stator assembly, axle sleeve, bearing, rotor assembly and spring, wherein, the base arch has the base fixed column can be right the stator assembly is fixing a position through setting up the concentricity is guaranteed to axle sleeve and the bearing of lower extreme on the base fixed column, can effectively reduce the motor noise, and the pivot assembly utilizes simultaneously the spring increases the free clearance of axial, plays the pre-compaction effect simultaneously better cushioning operation drunkenness, plays the cushioning effect, has formed the quiet, simple structure, compact motor of operation.
2. The base fixing column is arranged on the draft and the fillet, so that the base is ensured to be in smooth transition in the press mounting process of the motor, the phenomenon that the base is scratched by a stator to cause decentration is avoided, and the quality and the production efficiency are improved.
3. The stator core is fixed and compressed through the bolt, and looseness between stator pieces manufactured in batches is avoided, so that electromagnetic noise is generated, and when the motor works for a long time, the motor is damaged due to displacement of the stator caused by severe environment, vibration and gravity.
4. The setting of constant head tank and location strip has played the guide effect, further improves the work efficiency of assembly.
5. The motor adopt the external rotor structure, its operation inertia is big, the noise is low, efficient, compare adversion motor, the structure is frivolous, small.
6. The switching power supply board is arranged on the base through the fixing hook and the power supply board fixing hole, and the switching power supply board is simple to disassemble and assemble and convenient to maintain.
7. The shaft sleeve is arranged at the shaft outlet end, a heavier impeller can be loaded, the service life of the motor is prolonged, the cost is reduced, the ball bearing is arranged at the tail end of the motor shaft, the mechanical loss is smaller, the load capacity is improved, and the power consumption can be reduced.
For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.
Drawings
Fig. 1 is an exploded view of the motor of the present invention;
fig. 2 is a cross-sectional view of the motor of the present invention;
FIG. 3 is a cross-sectional view of the stator assembly and base combination of the present invention;
fig. 4 is a perspective view of the stator core of the present invention;
fig. 5 is a perspective view of the base of the present invention;
fig. 6 is another perspective view of the base of the present invention;
fig. 7 is a perspective view of the motor of the present invention.
Detailed Description
The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. The present invention may, however, be embodied in many different forms and should not be construed as limited to the specific embodiments set forth herein. Rather, these embodiments are provided to convey the scope of the invention to those skilled in the art.
Unless otherwise defined, terms (including technical and scientific terms) used herein should be understood to have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Moreover, it will be understood that terms used herein should be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As shown in fig. 1 to 3, fig. 1 is an exploded view of the motor of the present invention; fig. 2 is a cross-sectional view of the motor of the present invention; fig. 3 is a cross-sectional view of the stator assembly and base assembly of the present invention.
The utility model provides a motor, base 1, stator assembly 2, axle sleeve 3, bearing 4, rotor assembly 5 and spring 6, wherein, 1 protruding base fixed column 11 that has of base can be right the stator assembly is fixing a position, is in through setting up axle sleeve 3 and bearing 4 of lower extreme guarantee the concentricity on the base fixed column 11, can effectively reduce the motor noise, and the assembly of pivot utilizes simultaneously spring 6 increases the free clearance of axial, plays the pre-compaction effect and simultaneously better cushioning operation drunkenness, plays the cushioning effect, has formed the quiet, simple structure, compact motor of operation.
The respective components of the motor of the present embodiment are described in detail below.
As shown in fig. 4 and 6, fig. 5 is a perspective view of the base of the present invention; fig. 6 is another perspective view of the base of the present invention.
The middle part arch of 1 one end of base has base fixed column 11, axial through-hole has been seted up to base fixed column 11, the through-hole leads to out the other end of base 1. Specifically, the base 1 is substantially disc-shaped, and the base fixing post 11 extends outward from one end of the base 1 and is perpendicular to the base 1. In this embodiment, the base 1 is formed integrally by injection molding, and is of an integral structure with the base fixing column 11.
As a preferred embodiment, a countersunk hole is formed in one end of the base fixing column 11, which is far away from the base 1, and the shaft sleeve 3 is fixedly arranged in the countersunk hole. Specifically, the shaft sleeve 11 and the counter bore are in interference fit, and the contractibility of plastic is fully utilized, so that the shaft sleeve 3 extrudes the inner wall of the base fixing column 11, and the structure is more compact.
In a preferred embodiment, a groove 102 is formed at an end of the base 1 facing the bearing 3, and the bearing 4 is movably disposed in the groove 102. This setting has reduced the holistic volume of motor, make full use of the vertical space of base 1.
In a preferred embodiment, the outer surface of the base fixing column 11 is provided with a draft angle, and the diameter of the draft angle gradually shrinks from the end close to the base 1 to the end far from the base 1. Furthermore, the end part of the base fixing column 11, which is far away from one end of the base 1, is also provided with a fillet, and the base is ensured to be smoothly excessive in the press fitting process of the motor by using the draft and the arc transition, so that the stator is prevented from scratching the base to cause decentration, and the quality and the production efficiency are improved.
The stator assembly 2 is fixedly arranged on the base 1, and the base fixing column 11 penetrates through the stator assembly. Specifically, the stator assembly includes a stator core 21, a core fixing bolt 22, an upper bobbin 23, a lower bobbin 24, a winding 25, and a motor driving plate 26. The upper bobbin 23 and the lower bobbin 24 are respectively disposed at the upper and lower ends of the stator core 21, and are used to fix the stator core 21. The winding 25 is wound on the stator core 21, the upper bobbin 24 and the lower bobbin 24, and the motor driving plate 26 is arranged at the bottom of the lower bobbin 24. The motor driving plate 25 is hollow and provided with a plurality of positioning holes, and positioning columns matched with the positioning holes extend out of the lower portion of the lower wire frame 24.
As shown in fig. 4, fig. 4 is a perspective view of the stator core according to the present invention.
The stator core 21 is provided with an axial core positioning hole 211 in the middle, the base fixing column 11 is inserted into the core positioning hole 211, the stator core 21 is further provided with a first core fixing hole 212, the base 1 is provided with a second core fixing hole 103 coaxially arranged with the first core fixing hole 211, and the stator core 21 is fixedly connected with the base 1 by the core fixing bolt 22 penetrating through the first core fixing hole 212 and the second core fixing hole 103. At this time, the lower bobbin 24 and the motor drive plate 25 are also pressed by the stator core 21 and the base 1. In the embodiment, the stator core 21 is formed by laminating a plurality of stator sheets with the same shape and size, the stator in the prior art adopts a self-fastening stamped sheet, and the self-fastening phenomenon is often not tight.
The shaft sleeve 3 is fixedly arranged at one end, far away from the base 1, of the base fixing column 11 and is coaxially arranged with the base fixing column 11. Specifically, the shaft sleeve 3 and the counter bore 101 in the embodiment of the present application are in interference fit, and the contractibility of plastic is fully utilized, so that the shaft sleeve 3 extrudes the inner wall of the base fixing column 11, and the base fixing column 11 and the stator core 21 are matched more tightly. In the present embodiment, the bushing 3 is a sliding bearing. A gasket and a split washer can be sleeved above the shaft sleeve 3 to prevent the shaft sleeve 3 from moving axially.
The bearing 4 is arranged at the other end of the base 1, which is opposite to the protruding end of the base fixing column 11, and is coaxially arranged with the base fixing column 11. The bearing 4 and the shaft sleeve 3 are matched together to ensure the concentricity of internal parts of the motor and reduce the generation of vibration and noise. In the present embodiment, the bearing 4 is a ball bearing.
The rotor assembly 5 comprises a rotating shaft 51, a magnetic yoke 52 and a magnetic ring 53, wherein one end of the rotating shaft 51 sequentially penetrates through the shaft sleeve 3, the base fixing column 11 and the bearing 4. The magnetic ring 53 is fixedly arranged on the inner wall of the magnetic yoke 52, the magnetic yoke 52 covers the stator assembly, a rotating shaft fixing column 54 extends from one end of the magnetic yoke 52, which is far away from the base 1, the rotating shaft fixing column 54 is hollow and is sleeved outside the rotating shaft 51. The embodiment of the application adopts the outer rotor structure, has large operation inertia, low noise and high efficiency, and is light and thin in structure and small in size compared with an inner rotating motor.
The spring 6 is sleeved on the rotating shaft 51 and limited by a spring retainer ring 7, the spring retainer ring 7 is fixedly arranged at the tail end of one end of the rotating shaft 51 penetrating through the base 11, and the spring 6 is positioned between the bearing 4 and the spring retainer ring 7. The spring 6 is a compression spring and mainly plays a role in pre-pressing the bearing 4, buffering, damping and reducing noise. Still can be provided with the packing ring between spring 6 and the spring retainer 7, retaining ring 7 cooperates the packing ring compression book to search for fox spring 6 certain degree, forms certain prestressing force and gives bearing 4, has alleviateed bearing 4 load, and life-span utilizes spring elasticity, guarantees great axial float clearance, prevents that the motor from rising with heat and contracting with cold and causing the motor shaft tightly, plays noise and shock attenuation effect simultaneously, and in addition, the spring is bigger than conventional packing ring compression ratio, and noise and shock attenuation effect is better.
In addition, the invention also comprises a switching power supply board 8, wherein the switching power supply board 8 is arranged at one end of the base 1, which is provided with the bearing 4, a fixing hook 12 and a power supply board fixing hole 13 are arranged on the base 1, one end of the switching power supply board 8 is clamped on the fixing hook 12, and the other end of the switching power supply board 8 is fixed on the base 1 through the matching of a bolt and the power supply board fixing hole 13, so that the switch power supply board is simple to disassemble and assemble and is convenient to maintain. In this embodiment, the switching power supply board 8 is provided with a concave position matched with the fixing hook 12.
As a preferred embodiment, the stator core 21 further has an axial positioning groove 213, and the base fixing column 11 is provided with a positioning bar 14 engaged with the positioning groove 213. Through the cooperation of positioning groove 213 and positioning strip 14, quick positioning and installation of the stator are realized.
As a preferred embodiment, a step 15 is further protruded from one end of the base 1 facing the stator core 21 and coaxial with the base fixing column 11, the step 15 abuts against the stator core 21, and the second core fixing hole 103 is formed in the step 15. In this embodiment, since the other end of the base 1 opposite to the step 15 is the groove 102, the step 15 is actually formed by using a recessed space at the other end outside the groove 102, that is, the groove 102 and the step 15 occupy the same space, so that one end of the space can be used for placing the bearing 4, and the other end can be abutted against the stator core 21 to fully utilize the space of the base, so that the structure of the motor is more compact.
As shown in fig. 7, fig. 7 is a perspective view of the motor of the present invention.
When assembling the motor of this application embodiment, install first go up bobbin 23 and bobbin 24 on stator core 21, then adopt the coiling machine to coil in proper order according to the magnetic pole, form winding 25, install motor drive plate 26 on the reference column of bobbin 24, fixed with the thermosol method, and be connected with winding 25, form the stator assembly, motor drive plate 26 still can be provided with DC power supply lead wire and plug.
And coating glue on the inner wall of the integrally injection-molded magnet yoke 52, then installing a magnetic ring 53, and then installing the rotating shaft 51 provided with the positioning split retainer ring to form the rotor assembly.
The stator assembly is installed on the base fixing column 11, next, the iron core fixing bolt 22 is installed, the iron core fixing bolt 22 is fixed on the matched second iron core fixing hole 103 through the first iron core fixing hole 212 of the stator iron core 21, the base 1 of the motor and the stator assembly are firmly fixed, next, the shaft sleeve 3 and the bearing 4 are fixed on the corresponding position of the base fixing column 11, next, the graphite gasket is installed, next, the rotor assembly is installed, one end of the rotating shaft 51 penetrates through the graphite gasket, the shaft sleeve 3 and the bearing 4, next, the spring 6 and the gasket are installed, and next, the shaft is locked by the spring retainer ring 7.
And finally, installing a switching power supply board 8, skillfully matching the concave position and the screw hole of the switching power supply board 8 with a fixing hook 12 and a power supply board fixing hole 13 of the motor base, fixing the switching power supply board 8 on the base 1, setting the plug connection of a direct-current power supply socket and a motor drive board 26 on the switching power supply board 8, and then setting an alternating-current power supply lead.
Compared with the prior art, the motor of the embodiment of the application has the following technical effects or advantages:
1. the motor includes base, stator assembly, axle sleeve, bearing, rotor assembly and spring, wherein, the base arch has the base fixed column can be right the stator assembly is fixing a position through setting up the concentricity is guaranteed to axle sleeve and the bearing of lower extreme on the base fixed column, can effectively reduce the motor noise, and the pivot assembly utilizes simultaneously the spring increases the free clearance of axial, plays the pre-compaction effect simultaneously better cushioning operation drunkenness, plays the cushioning effect, has formed the quiet, simple structure, compact motor of operation.
2. The base fixing column is arranged on the draft and the fillet, so that the base is ensured to be in smooth transition in the press mounting process of the motor, the phenomenon that the base is scratched by a stator to cause decentration is avoided, and the quality and the production efficiency are improved.
3. The stator core is fixed and compressed through the bolt, and looseness between stator pieces manufactured in batches is avoided, so that electromagnetic noise is generated, and when the motor works for a long time, the motor is damaged due to displacement of the stator caused by severe environment, vibration and gravity.
4. The setting of constant head tank and location strip has played the guide effect, further improves the work efficiency of assembly.
5. The motor adopt the external rotor structure, its operation inertia is big, the noise is low, efficient, compare adversion motor, the structure is frivolous, small.
6. The switching power supply board is arranged on the base through the fixing hook and the power supply board fixing hole, and the switching power supply board is simple to disassemble and assemble and convenient to maintain.
7. The shaft sleeve is arranged at the shaft outlet end, a heavier impeller can be loaded, the service life of the motor is prolonged, the cost is reduced, the ball bearing is arranged at the tail end of the motor shaft, the mechanical loss is smaller, the load capacity is improved, and the power consumption can be reduced.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (10)
1. An electric machine, comprising:
the middle part of one end of the base is protruded with a base fixing column, the base fixing column is provided with an axial through hole, and the through hole is communicated with the other end of the base;
the stator assembly is fixedly arranged on the base, and the base fixing column penetrates through the stator assembly;
the shaft sleeve is fixedly arranged at one end, far away from the base, of the base fixing column and is coaxial with the base fixing column;
the bearing is arranged at the other end, opposite to the protruding end of the base fixing column, of the base and is coaxial with the base fixing column;
the rotor assembly comprises a rotating shaft, and one end of the rotating shaft sequentially penetrates through the shaft sleeve, the base fixing column and the bearing;
the spring retainer ring is fixedly arranged at one end of the rotating shaft penetrating through the base;
and the spring is sleeved on the rotating shaft and is positioned between the bearing and the spring retainer ring.
2. The electric machine of claim 1, wherein: the base fixing column is provided with a counter bore at one end far away from the base, and the shaft sleeve is fixedly arranged in the counter bore.
3. The electric machine of claim 1, wherein: one end of the base, which faces the bearing, is provided with a groove, and the bearing is movably arranged in the groove.
4. The electric machine of claim 1, wherein: the outer surface of the base fixing column is provided with a draft angle, and the diameter of the draft angle gradually shrinks from one end close to the base to one end far away from the base.
5. The electric machine of claim 1, wherein: the stator assembly comprises a stator core and a core fixing bolt, an axial core positioning hole is formed in the middle of the stator core, the base fixing column penetrates through the core positioning hole, a first core fixing hole is formed in the stator core, a second core fixing hole which is coaxial with the first core fixing hole is formed in the base, and the stator core is fixedly connected with the base through the core fixing bolt penetrating through the first core fixing hole and the second core fixing hole.
6. The electric machine of claim 5, wherein: the stator core is further provided with an axial positioning groove, and the base fixing column is provided with a positioning strip matched with the positioning groove.
7. The electric machine of claim 4, wherein: the end part of the base fixing column, which is far away from one end of the base, is also provided with a fillet.
8. The electric machine of claim 5, wherein: the base is towards the one end of stator core still protruding have with the coaxial step that sets up of base fixed column, the step supports top stator core, the second iron core fixed orifices is seted up on the step.
9. The electric machine according to any of claims 1 to 8, characterized in that: the bearing is arranged on the base, the base is provided with a fixing hook and a power panel fixing hole, one end of the switch power panel is clamped on the fixing hook, and the other end of the switch power panel is fixed on the base through the matching of a bolt and the power panel fixing hole.
10. The electric machine according to any of claims 1 to 8, characterized in that: the rotor assembly further comprises a magnet yoke and a magnet ring, the magnet ring is fixedly arranged on the inner wall of the magnet yoke, the magnet yoke covers the stator assembly, a rotating shaft fixing column extends out of one end, far away from the base, of the magnet yoke, and the rotating shaft fixing column is hollow and sleeved outside the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920921900.8U CN209982244U (en) | 2019-06-18 | 2019-06-18 | Electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920921900.8U CN209982244U (en) | 2019-06-18 | 2019-06-18 | Electric machine |
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| CN209982244U true CN209982244U (en) | 2020-01-21 |
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| CN201920921900.8U Active CN209982244U (en) | 2019-06-18 | 2019-06-18 | Electric machine |
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| CN (1) | CN209982244U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023082294A1 (en) * | 2021-11-15 | 2023-05-19 | 深圳市大疆创新科技有限公司 | Coaxial two-propeller unmanned aerial vehicle, unmanned aerial vehicle set, and motor |
-
2019
- 2019-06-18 CN CN201920921900.8U patent/CN209982244U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023082294A1 (en) * | 2021-11-15 | 2023-05-19 | 深圳市大疆创新科技有限公司 | Coaxial two-propeller unmanned aerial vehicle, unmanned aerial vehicle set, and motor |
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