CN218633489U

CN218633489U - Motor and have garden equipment of this motor

Info

Publication number: CN218633489U
Application number: CN202222460924.2U
Authority: CN
Inventors: 尤福群; 李恒渊
Original assignee: Zhejiang Sunseeker Industrial Co ltd
Current assignee: Zhejiang Sunseeker Industrial Co ltd
Priority date: 2022-09-15
Filing date: 2022-09-15
Publication date: 2023-03-14
Anticipated expiration: 2032-09-15

Abstract

The utility model provides a motor and garden equipment with the motor, wherein, the motor comprises a stator component and a rotor component, and the stator component is sleeved outside the rotor component; the rotor assembly comprises a rotor core and an annular permanent magnet, and the annular permanent magnet is sleeved on the outer side of the rotor core; the rotor core surface is equipped with first arch, forms concave-convex structure at the rotor core surface, and wherein, concave-convex structure's bulge is constructed and can be laminated with annular permanent magnet inner wall, and concave part of concave-convex structure is constructed and can hold glue. The motor of the utility model can solve the connection problem between the magnetic ring and the rotor core, the convex part is attached to the inner wall of the annular permanent magnet, and the concave part contains glue, so that the connection between the annular permanent magnet and the rotor core is firm; the utility model discloses an improvement installation effectiveness that monoblock magnetic ring can be very big.

Description

Motor and have garden equipment of this motor

Technical Field

The utility model relates to the technical field of motors, especially, relate to a motor and have garden equipment of this motor.

Background

The motor has the defects of low efficiency, high power consumption, high temperature rise, high vibration and noise, large volume, heavy weight, more consumable materials and the like, but has the characteristics of low manufacturing cost, popular social energy conservation and environmental protection along with the social progress and the technical progress, more and more magnetic ring motors are used, and the problem to be solved is how to realize the reliable fixation between a magnetic ring and a rotor core in the magnetic ring motors.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide, can be used for solving the problem that proposes among the above-mentioned background art.

In order to achieve the purpose, the technical scheme adopted by the utility model is a motor, which comprises a stator component and a rotor component, wherein the stator component is sleeved outside the rotor component;

the rotor assembly comprises a rotor core and an annular permanent magnet, and the annular permanent magnet is sleeved on the outer side of the rotor core; the rotor core surface is equipped with first arch, forms concave-convex structure at the rotor core surface, and wherein, concave-convex structure's bulge is constructed and can be laminated with annular permanent magnet inner wall, and concave part of concave-convex structure is constructed and can hold glue.

Further, the first protrusion is configured as a bar.

Further, the first projection extends in the axial direction of the rotor core; alternatively, the first projection is configured to extend in a circumferential direction of the rotor core; alternatively, the extending direction of the first protrusion forms an acute angle with the axial direction of the rotor core.

Furthermore, the first bulges are provided with a plurality of first bulges which are arranged in parallel or in non-parallel.

The motor further comprises an outer shell, wherein the outer shell wraps the stator assembly and the rotor assembly; alternatively, the outer housing does not completely encase the stator assembly.

Further, still include outside casing and shield cover, outside casing and stator module, rotor subassembly installation, shield cover are installed in the outside of outside casing.

Further, the bearing shell further comprises an outer shell body, wherein the outer shell body comprises a shell main body and an end cover, a first cylindrical cavity and a second cylindrical cavity are respectively arranged on the shell main body and the end cover, and the first cylindrical cavity and the second cylindrical cavity are constructed to be capable of mounting a bearing.

Further, the rotor core includes an output shaft and a boss mounted on the output shaft, the first projection being configured on the boss.

Furthermore, the rotor core further comprises a first limiting piece and a second limiting piece, and the first limiting piece and the second limiting piece are located at two ends of the shaft sleeve.

A garden equipment, includes foretell motor.

Further, the garden equipment is a mowing robot.

To sum up, the beneficial effects of the utility model are that: the motor of the utility model can solve the connection problem between the magnetic ring and the rotor core, the convex part is attached to the inner wall of the annular permanent magnet, and the concave part contains glue, so that the connection between the annular permanent magnet and the rotor core is firm; the utility model adopts a monoblock magnetic ring to greatly improve the installation efficiency; the self-shielding effect of the annular permanent magnet is utilized to close the magnetic field in the permanent magnet, so that the magnetic density of one side of the magnetic ring can be increased, the magnetic load of the motor can be improved, the volume of the motor can be reduced, the inertia and iron loss of a rotor can be reduced, and the dynamic performance and efficiency can be improved; moreover, the annular permanent magnet can greatly reduce the cogging torque and the starting torque effect, and even basically eliminate the cogging torque; the annular permanent magnet does not need to use the conventional design methods of stator/rotor skewed slots, pole arc coefficient optimization, lap winding and the like, the induced potential is close to a sine wave, the harmonic content is low, and the harmonic loss is low.

Drawings

Fig. 1 is a schematic view of the overall structure of a motor in one direction in embodiment 1;

FIG. 2 is an exploded view of the motor of the embodiment;

FIG. 3 is an exploded view of a rotor assembly according to example I;

fig. 4 is a sectional view of the motor of embodiment 1;

FIG. 5 isbase:Sub>A sectional view taken along line A-A of FIG. l andbase:Sub>A partially enlarged view ofbase:Sub>A portion of the area;

FIG. 6 is a schematic view showing the entire structure of the motor in the other direction in embodiment 1;

FIG. 7 is a schematic view of the motor of embodiment 1 without the end cap;

fig. 8 is a schematic view of the overall structure of the motor in embodiment 2;

fig. 9 is an exploded view of the motor of embodiment 2;

fig. 10 is an exploded view of a rotor assembly in example 2.

Detailed Description

Embodiments of the invention will be described in further detail with reference to the drawings, it being understood that the examples are illustrative only and should not be taken as limiting the invention, and that all of the features disclosed in the examples or all of the steps in any method or process disclosed herein can be combined in any way, except for mutually exclusive features and/or steps.

Example l is shown in FIGS. l to 7.

The utility model provides a motor, including outside casing 30 and install stator module 10 and rotor subassembly 20 in outside casing 30, wherein, stator module 10 covers in rotor subassembly 20's the outside, and rotor subassembly 20 includes rotor core 21 and annular permanent magnet 22, and annular permanent magnet 22 covers in the outside of rotor core 21, the utility model discloses annular permanent magnet 22 in the motor has replaced the mode of traditional a plurality of magnetic sheets concatenation. Firstly, the assembly process is simplified, only 1 annular permanent magnet 22 needs to be installed, and the installation efficiency is greatly improved; secondly, the annular permanent magnet 22 has a self-shielding effect, so that a magnetic field is closed in the permanent magnet, the magnetic density of one side of a magnetic ring can be increased, the magnetic load of the motor is improved, the volume of the motor can be reduced, the inertia and the iron loss of a rotor are reduced, and the dynamic performance and the efficiency are improved; moreover, the annular permanent magnet 22 can greatly reduce cogging torque and starting torque effects, and even substantially eliminate cogging torque; the annular permanent magnet 22 does not need to use the design methods of a conventional stator/rotor chute, pole arc coefficient optimization, lap winding and the like, the induced potential is close to a sine wave, the harmonic content is low, and the harmonic loss is low.

Preferably, the surface of the rotor core 21 is provided with first protrusions 23, so as to form a concave-convex structure on the surface of the rotor core 2l, wherein a convex part (a part of the first protrusion 23) of the concave-convex structure is configured to be capable of fitting with the inner wall of the annular permanent magnet 22, and a concave part (a region between the first protrusions 23) of the concave-convex structure is configured to contain glue, and such a design can make the bonding between the annular permanent magnet 22 and the rotor core 21 more firm.

Preferably, the first projection 23 is configured in a bar shape, and in the present embodiment, the first projection 23 extends in the axial direction of the rotor core 21. In some embodiments, the first projection 23 is configured to extend in the circumferential direction of the rotor core 21. In some embodiments, the extending direction of the first projection 23 is at an acute angle to the axial direction of the rotor core 21.

Further, the first protrusion 23 is provided with a plurality of strips. In the present embodiment, the plurality of first protrusions 23 are arranged in parallel. In other embodiments, the first protrusions 23 are disposed non-parallel.

Preferably, the rotor core 21 includes an output shaft 24, and a shaft sleeve 25, a first retaining member 26 and a second retaining member 27 mounted on the output shaft 24, the first protrusion 23 is configured on the shaft sleeve 25, and the first retaining member 26 and the second retaining member 27 are respectively located at two ends of the shaft sleeve 25 for axially retaining the annular permanent magnet 22 and the shaft sleeve 25.

In order to facilitate the installation of the stator assembly 10 in the external casing 30 and avoid the rotation between the stator assembly 10 and the external casing 30, preferably, the external casing 30 is provided with a first limiting structure 3l, the stator assembly 10 is provided with a second limiting structure 11 matched with the first limiting structure 31, and the first limiting structure 31 and the second limiting structure 1l can be embedded together. In this embodiment, the first limiting structure 3l is a second protrusion that is recessed inward on the outer casing 30, the second limiting structure 11 is a second recess that is recessed inward on the stator assembly 10, the second protrusion and the second recess both extend along the direction of the rotating shaft of the motor, and at least one end of the second recess extends to the edge of the stator assembly to form an open end, so that the second protrusion can be inserted into the second recess. It should be noted that the second protrusion may or may not be integral with the outer housing 30. Exemplarily, in embodiment 1 of fig. 5, the second projection is integrally formed with the outer case 30; for example, in embodiment 2 of fig. 8, the second projection is not integrated with the outer housing 30, the second projection is formed by mounting a bolt on the outer housing 30, and the second projection formed by a side surface of the bolt is brought into contact with the second recess to fix the stator assembly 10 to the outer housing 30.

Furthermore, the profile surfaces of the second protrusion and the second recess are arc-shaped. In other embodiments, the first limiting structure 31 is configured as a third outwardly protruding recess on the outer housing 30 and the second limiting structure 11 is configured as a third outwardly protruding projection on the stator assembly 10.

Preferably, the second protrusion is strip-shaped, and the second recess is strip-shaped.

Preferably, the outer housing 30 includes a housing main body 32 and an end cap 33, the housing main body 32 and the end cap 33 when assembled together forming the outer housing 30.

Preferably, the outer housing 30 is provided with inwardly recessed tabs 36, the tabs 36 being configured for positioning the stator assembly 10 in a mounted position (axially) within the outer housing 30.

Preferably, the outer housing 30 is provided with a screw hole 37, and the stator assembly 10 can be more firmly fixed in the outer housing 30 by installing a screw between the stator assembly 10 and the outer housing 30.

Preferably, the housing body 32 and the end cap 33 are respectively provided with a first cylindrical cavity 38 and a second cylindrical cavity 39, and the first cylindrical cavity 38 and the second cylindrical cavity 39 are configured to be capable of mounting bearings. In the present embodiment, the first cylindrical cavity 38 and the second cylindrical cavity 39 are respectively formed by stamping on the housing main body 32 and the end cover 33, so as to further reduce the manufacturing cost.

Preferably, a step structure 44 is provided on the inner wall of the housing main body 32, the end cap 33 is configured to be mounted on the step structure 44, and when the housing main body 32 is assembled with the end cap 33, the edge 34 of the housing main body 32 is provided with a press buckle 35 formed by machining, the press buckle 35 abuts on the end cap 33, and the end cap 33 abuts on the step structure 44. The press button 35 can be directly formed by stamping, and the assembling steps are greatly simplified.

Preferably, the end cap 33 can be at least partially embedded within the housing body 32.

Preferably, the edge 34 of the housing body 32 on the side adjacent the end cap 33 projects from the end cap.

Preferably, the press studs 35 are spaced on the edge 34 of the housing body 32, illustratively 45 ° between adjacent press studs 35.

Preferably, at least 3 press buttons 35 are provided, and in the embodiment, 7 press buttons 35 are provided.

Preferably, the end cap 33 is provided with a threading hole 45, the end cap 33 is provided with a cover plate 46 at the position of the threading hole 45, and the edge 34 of the shell main body 32 is not provided with the press button 35 at the position close to the threading hole 45 or the cover plate 46.

When the motor of this embodiment is assembled, the second limit structure 11 of the stator assembly 10 is aligned to the first limit structure 31 on the external casing 30 (circumferential positioning is performed), the stator assembly 10 is installed in the external casing 30, the salient point 36 can limit the stator assembly 10 (axial positioning is performed), the stator assembly 10 is fixed by installing a screw between the stator assembly 10 and the external casing 30, the rotor assembly 20 is inserted into the inside of the stator assembly 10, the end cover 33 is covered, the rotor assembly 20 is abutted to the bearing on the housing main body 32 and the end cover 33, and the press buckle 35 is formed by punching on the edge 34 of the housing main body 32, so that the whole assembly is completed.

Example 2 is shown in FIGS. 8 to 10.

The utility model provides a motor, for embodiment 1, the motor of this embodiment still includes shield cover 40, and shield cover 40 is installed in the outside of outside casing 30 for prevent electromagnetic interference.

The technical solution of this embodiment is basically the same as that of embodiment l, except that:

the outer casing 30 in this embodiment does not completely surround the stator assembly 10, and the press studs 35 cannot be formed by punching because the outer casing does not completely surround the stator assembly 10, so the connection manner of the housing main body 32 and the end cover 33 in this embodiment is different from that in embodiment 1.

Preferably, a shield 40 outside the outer housing 30 encases the stator assembly 10.

Preferably, the external casing 30 includes a casing main body 32 (front end cover) and an end cover 33 (rear end cover), the casing main body 32 and the end cover 33 are respectively provided with a first mounting hole 4l and a second mounting hole 42, the stator assembly 10 is provided with a second limiting structure 11, the first mounting hole 41 and the second mounting hole 42 can be provided with a first limiting structure paired with the second limiting structure 11, and the first limiting structure and the second limiting structure ll can be embedded together. In this embodiment, long screw can be selected for use to first limit structure, and second limit structure ll is through groove or through-hole, accomplishes shell main part 32, end cover 33, stator module 10 three's fixed through letting long screw connect first mounting hole 4l, second mounting hole 42 and run through second limit structure ll, and this kind of is fixed can not only restrict stator module 10 at the circumferential motion of external casing 30, also can restrict its axial motion simultaneously.

Preferably, the first mounting holes 41 and the second mounting holes 42 provided on the housing main body 32 and the end cover 33, and the second limit structures 11 provided on the stator assembly 10 are the same in number, the first mounting holes 41 and the second mounting holes 42 are provided in the form of an array on the housing main body 32 and the end cover 33, and the second limit structures 11 are provided in the form of an array on the stator assembly 10.

Other embodiments of this example are the same as example 1.

Example 3.

The present embodiment provides a garden apparatus equipped with the motor of embodiment 1 and/or embodiment 2. Illustratively, the garden equipment is a mowing robot, the motor in the embodiment 1 is selected as a walking motor, and the motor in the embodiment 2 is selected as a mowing motor.

Other embodiments of this example are the same as example 1 and/or example 2.

The above description is only the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through creative work should be covered within the protection scope of the present invention, and therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. The motor is characterized by comprising a stator component and a rotor component, wherein the stator component is sleeved outside the rotor component;

2. An electric machine as claimed in claim 1, characterized in that the first projection is configured as a bar.

3. A motor according to claim 2, wherein the first projection extends in the axial direction of the rotor core; alternatively, the first projection is configured to extend in a circumferential direction of the rotor core; alternatively, the extending direction of the first protrusion forms an acute angle with the axial direction of the rotor core.

4. The motor of claim 2, wherein the first protrusions are provided in a plurality of strips, and the plurality of strips of the first protrusions are disposed in parallel or non-parallel.

5. The electric machine of claim 1, further comprising an outer housing enclosing the stator and rotor assemblies; alternatively, the outer housing does not completely encase the stator assembly.

6. The electric machine of claim 1 further comprising an outer housing mounted with the stator assembly and the rotor assembly and a shield mounted outside the outer housing.

7. The electric machine of claim 1, further comprising an outer housing comprising a housing body and an end cap, wherein the housing body and the end cap are respectively provided with a first cylindrical cavity and a second cylindrical cavity, and the first cylindrical cavity and the second cylindrical cavity are configured to receive a bearing.

8. An electric machine as claimed in claim 1, characterized in that the rotor core comprises an output shaft and a sleeve mounted on the output shaft, the first projection being configured on the sleeve.

9. The electrical machine of claim 8, wherein the rotor core further comprises a first stop and a second stop, the first stop and the second stop being located at two ends of the sleeve.

10. A garden apparatus, characterized in that it comprises a motor according to any one of claims 1 to 9.

11. The gardening device of claim 10, wherein the gardening device is a lawn mowing robot.