CN219980531U - Brushless motor and robot - Google Patents

Abstract

The utility model discloses a brushless motor and a robot. The brushless motor comprises a shell, a rotating shaft, a rotor assembly and a stator assembly; the rotating shaft is rotatably arranged on the shell and at least partially extends out from one end of the shell; the rotor component is arranged on the outer peripheral side of the rotating shaft; the stator assembly is sleeved on the inner side of the shell and surrounds the outer periphery of the rotor assembly; the stator assembly comprises a plurality of winding ribs, the plurality of winding ribs are annularly arranged on the outer peripheral side of the rotor assembly in a surrounding mode, each winding rib extends along the radial direction of the rotating shaft, a winding area is formed between every two adjacent winding ribs, and the cross section of the winding area is in a fan-shaped arrangement. The utility model can ensure the power of the brushless motor under the condition of smaller outer diameter of the brushless motor, so that the output power of the brushless motor is larger, and the use requirements of various miniaturized large driving equipment can be met.

Description

Brushless motor and robot

Technical Field

The utility model relates to the technical field of motors, in particular to a brushless motor and a robot.

Background

Motors are now an indispensable component in various intelligent devices, and the motors can drive the intelligent devices, such as robots, to move, or control the arms or fingers of the robots to move, so as to make various fine actions. However, the conventional motor is generally large in size and cannot adapt to the driving requirement of miniaturized equipment, or when the motor is small in size, the motor is insufficient in power and cannot accurately drive all joints or parts of the intelligent equipment to move, so that the intelligent equipment cannot realize the refined action requirement.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is that the traditional motor cannot simultaneously meet the problems of small volume and sufficient power.

In order to solve the above technical problems, the present utility model provides a brushless motor, including:

a housing;

the rotating shaft is rotatably arranged on the shell and at least partially extends out from one end of the shell;

a rotor assembly provided on an outer circumferential side of the rotating shaft;

the stator assembly is sleeved on the inner side of the shell and surrounds the outer periphery of the rotor assembly;

the stator assembly comprises a plurality of winding ribs, the plurality of winding ribs are annularly arranged on the outer peripheral side of the rotor assembly in a surrounding mode, each winding rib extends along the radial direction of the rotating shaft, a winding area is formed between every two adjacent winding ribs, and the cross section of the winding area is in a fan-shaped arrangement.

Optionally, a distance between each two adjacent winding ribs at one end close to the rotor assembly is 0.95 mm-1.05 mm.

Optionally, the stator assembly includes the reinforcement, and with the reinforcement is the wire winding support of nested setting, be equipped with a plurality of reinforcements on the reinforcement, a plurality of the reinforcement is the annular circumference of locating rotor assembly's periphery side, be equipped with a plurality of isolation parts on the wire winding support, a plurality of isolation parts respectively one-to-one cover locate a plurality of the outside of reinforcement, with formation wire winding muscle.

Optionally, the reinforcement member includes a reinforcement bracket disposed in a ring shape, each of the reinforcement portions includes a reinforcement protrusion protruding from an inner ring side of the reinforcement bracket, and each of the reinforcement protrusions is disposed to extend in a radial direction of the rotation shaft;

the winding support comprises a winding frame which is arranged in an annular mode, each isolation portion comprises a winding groove which is concavely arranged from the outer ring side to the inner ring side of the winding frame, the reinforcing support is sleeved on the outer side of the winding frame, and the reinforcing protrusions are arranged in the winding grooves in a one-to-one correspondence mode.

Optionally, each winding slot is disposed in an open manner toward one end of the rotor assembly, so that each reinforcing protrusion may be exposed from each corresponding winding slot.

Optionally, the reinforcement comprises a plurality of silicon steel sheets arranged in a stacked manner; and/or the number of the groups of groups,

the winding bracket is made of an insulating material; and/or the number of the groups of groups,

the reinforcing piece and the winding bracket are integrally arranged.

Optionally, the rotor subassembly includes the mounting bracket, and locates a plurality of magnets on the mounting bracket, the mounting bracket cover is located the outside of axis of rotation, a plurality of magnets are followed the circumference ring of axis of rotation is located the periphery side of mounting bracket.

Optionally, 9 winding ribs are provided, and 6 magnets are provided.

Optionally, the housing comprises:

the stator assembly is sleeved on the inner side of the main shell and forms rotation-stopping fit with the main shell;

the front end cover is covered at the front end opening part of the main shell;

a rear end cover covering the rear end of the main housing;

the rotating shafts are respectively arranged on the front end cover and the rear end cover in a rotating mode, and at least part of the rotating shafts can extend out of the front end cover.

The utility model also provides a robot comprising the brushless motor.

The technical scheme provided by the utility model has the following advantages:

the brushless motor provided by the utility model comprises a shell, a rotating shaft, a rotor assembly and a stator assembly, wherein the rotor assembly is arranged on the outer peripheral side of the rotating shaft, and the stator assembly is arranged on the outer peripheral side of the rotor assembly in a surrounding manner, so that after the stator assembly is electrified, the rotor assembly can be driven to rotate so as to drive the rotating shaft to rotate, and the power output is realized through the rotating shaft; wherein, stator module is including a plurality of wire winding muscle, a plurality of wire winding muscle are used for supplying the coil to wind and establish it, and a plurality of wire winding muscle is evenly distributed in stator module's periphery side, make magnetic force distribution more even, each wire winding muscle all extends along the radial of axis of rotation and sets up moreover, the thickness of each wire winding muscle everywhere is more even, in order to avoid appearing the magnetic leakage, simultaneously, can make the interval between two adjacent wire winding muscle can be littleer, thereby the quantity of wire winding muscle can set up more, make electromagnetic strength bigger, thereby more can satisfy high-power motor's manufacturing demand, under brushless motor's external diameter less circumstances, still can guarantee brushless motor's power, make brushless motor's output power bigger, can satisfy the user demand of various miniaturized large-scale actuating equipment.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an embodiment of a brushless motor according to the present utility model;

FIG. 2 is an exploded view of the brushless motor of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the brushless motor shown in FIG. 1;

fig. 4 is a schematic cross-sectional view of the brushless motor shown in fig. 1.

Reference numerals illustrate:

100-brushless motor; 1-a housing; 11-a front end cap; 12-a shell body; 13-a rear end cap; 2-rotating shaft; 3-a rotor assembly; 31-mounting frame; 32-magnets; a 4-stator assembly; 41-a stiffener; 411-reinforcing a stent; 412-reinforcements; 42-winding bracket; 421-spacers; 422-a hook; 43-coil; 5-a waveform shrapnel; 6-cover plate; 61-clamping grooves; 7-sleeve.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. The utility model will be described in detail hereinafter with reference to the drawings in conjunction with embodiments. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

In the present utility model, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the component itself in the vertical, upright or gravitational direction; also, for ease of understanding and description, "inner and outer" refers to inner and outer relative to the profile of each component itself, but the above-mentioned orientation terms are not intended to limit the present utility model.

The utility model provides a brushless motor 100, please refer to fig. 1 and 2, the brushless motor 100 includes a housing 1, a rotating shaft 2 rotatably disposed on the housing 1, and a rotor assembly 3 and a stator assembly 4 disposed in the housing 1, at least a portion of the rotating shaft 2 can extend from one end of the housing 1 for connecting with a device to be driven to provide driving force to the device to be driven; the rotor assembly 3 is arranged on the outer peripheral side of the rotating shaft 2; the stator assembly 4 is sleeved on the inner side of the shell 1 and surrounds the outer periphery side of the rotor assembly 3; the stator assembly 4 comprises a plurality of winding ribs, the plurality of winding ribs are annularly arranged on the outer peripheral side of the rotor assembly 3 in a surrounding mode, each winding rib extends along the radial direction of the rotating shaft 2, a winding area is formed between every two adjacent winding ribs, and the cross section of the winding area is in a fan-shaped arrangement.

According to the brushless motor 100 provided by the utility model, after the stator assembly 4 is electrified, the rotor assembly 3 is driven to rotate so as to drive the rotating shaft 2 to rotate, so that the power output is realized through the rotating shaft 2; wherein, stator module 4 is including a plurality of wire winding muscle, a plurality of wire winding muscle are used for supplying coil 43 to wind and establish it, and a plurality of wire winding muscle is evenly distributed in the periphery side of stator module 4, make the magnetic force distribution who encloses to locate rotor module 3 week side more even, and each wire winding muscle all extends along the radial of axis of rotation 2 and sets up, preferably, the thickness in each wire winding muscle everywhere is unanimous, thereby magnetic force distribution is more even after the coil winds and locates on it, be difficult to appear the magnetic leakage, simultaneously, can make the interval between two adjacent wire winding muscle can be littleer, thereby the quantity of wire winding muscle can set up more, make electromagnetic strength bigger, thereby more can satisfy high-power motor's manufacturing demand, under brushless motor 100's external diameter less circumstances, still can guarantee brushless motor 100's power, make brushless motor 100's output power big, can satisfy the user demand of various miniaturized big driving equipment.

It will be appreciated that the stator assembly 4 further comprises a coil 43, the coil 43 being adapted to be wound around a winding bar, and the coil 43 being adapted to be electrically connected to a power supply means so as to form a magnetic field when the coil 43 is energised and to be cut with the magnetic field generated by the magnets on the rotor assembly 3 so as to drive the rotor assembly 3 in rotation.

Further, since each of the winding ribs extends in the radial direction of the rotation shaft 2, the distance between two adjacent winding ribs is gradually increased in the radial direction of the rotation shaft 2 and in the direction from the edge of the rotation shaft 2 toward the center of the rotation shaft 2. In order to provide as many winding ribs as possible, and at the same time, to allow a sufficient margin for the winding blade to extend between two adjacent winding ribs, preferably, as shown in fig. 4, the minimum distance between each two adjacent winding ribs at the end near the rotor assembly 3 is H1, wherein H1 is 0.95mm to 1.05mm, the number of winding ribs provided in the stator assembly 4 is optimal, and the winding blade can be provided for winding without damaging the coil 43.

As shown in fig. 2 and fig. 4, the stator assembly 4 includes a reinforcing member 41 and a winding support 42 nested with the reinforcing member 41, a plurality of reinforcing portions 412 are disposed on the reinforcing member 41, the reinforcing portions 412 are annularly disposed on the outer peripheral side of the rotor assembly 3, the reinforcing portions 412 are uniformly distributed, each reinforcing portion 412 can be used for reinforcing the magnetic field strength of the coil 43 disposed on the outer side of the reinforcing portion, a plurality of isolation portions 421 are disposed on the winding support 42, the isolation portions 421 are respectively sleeved on the outer sides of the plurality of reinforcing portions 412 in a one-to-one correspondence manner to form winding ribs, the adjacent two reinforcing portions 412 are isolated by the isolation portions 421 to avoid interference, and the coil 43 can be disposed on the isolation portions 421 in a winding manner.

The reinforcement 41 includes a reinforcement bracket 411 disposed in a ring shape, preferably the reinforcement bracket 411 is disposed in a ring shape, each reinforcement portion 412 includes a reinforcement protrusion protruding from an inner ring side of the reinforcement bracket 411, each reinforcement protrusion is disposed to extend in a radial direction of the rotation shaft 2, each reinforcement protrusion is formed with a connection end connected to the reinforcement bracket 411 and a free end opposite to the connection end, and each free end of the reinforcement protrusion is disposed near the stator assembly 4; the winding bracket 42 includes a winding frame disposed in a ring shape, each of the isolation portions 421 includes a winding groove recessed from an outer ring side toward an inner ring side of the winding frame, and the reinforcing bracket 411 is sleeved on an outer side of the winding frame, and the reinforcing protrusions are disposed in the winding grooves in a one-to-one correspondence manner. The outer ring side of the reinforcing bracket 411 forms the outer circumferential surface of the entire stator assembly 4, and the reinforcing protrusion is wrapped by a plurality of winding grooves so that the coil 43 may be wound around the outer circumferential side of the winding grooves.

Moreover, each winding groove is disposed in an open manner toward one end of the rotor assembly 3, so that each reinforcing protrusion can be exposed from the corresponding winding groove, thereby increasing the magnetic field strength.

Further, the open peripheral side of each winding slot near one end of the stator assembly 4 is provided with an extension edge extending towards the peripheral side, so that the coil 43 can be prevented from falling off from the open end after winding the winding slot, and the reliability of the coil 43 is ensured.

Preferably, the stiffener 41 may comprise a plurality of silicon steel sheets arranged in a stacked manner, which is more convenient to manufacture.

The material of the winding support 42 is an insulating material to isolate the coil from each other and from the coil 43 and the reinforcing portion 412.

In addition, in an embodiment, the reinforcing member 41 and the winding bracket 42 may be integrally formed, the reinforcing member 41 may be stacked and bonded together by a silicon steel sheet, and then the entire reinforcing member 41 is put into an injection mold of the winding bracket 42 to be integrally injection-molded, so as to avoid the reinforcing member 41 and the winding bracket 42 from being easily separated, and make the assembly of the entire brushless motor 100 simpler.

For the rotor assembly 3, as shown in fig. 2 and 3, the rotor assembly 3 includes a mounting frame 31 and a plurality of magnets 32 disposed on the mounting frame 31, the mounting frame 31 is sleeved on the outer side of the rotating shaft 2, and the plurality of magnets 32 are disposed on the outer circumferential side of the mounting frame 31 along the circumferential ring of the rotating shaft 2, so that the magnets 32 are more conveniently fixed through the mounting frame 31. Specifically, the mounting frame 31 is cylindrically provided so as to be fixedly fitted around the outer peripheral side of the rotating shaft 2, and the plurality of magnets 32 may be bonded to the outer peripheral side of the mounting frame 31. In assembling the brushless motor 100, the plurality of magnets 32 may be fixed on the mounting frame 31 to form the stator assembly 4, and then mounted on the rotating shaft 2, so that the assembly is more convenient.

It can be understood that the narrower the thickness of the winding ribs (i.e., the dimension along the circumferential direction of the rotating shaft 2), the more the number of winding ribs can be set, but the too small the thickness of the winding ribs, the strength of the winding ribs is insufficient, the winding ribs are easy to damage, and meanwhile, the too small reinforcing part and the magnetic conductivity cannot meet the requirements; if the thickness of the winding ribs is too large, on the one hand, the manufacturing strength is increased, and on the other hand, the setting of the number of the winding ribs is also affected, so that the thickness of the winding ribs is moderate, preferably, the thickness of the winding ribs is matched with the thickness of the winding support 42 (the radial dimension of the winding support 42 along the rotating shaft 2), the manufacturing is simpler while the self strength of the winding ribs is ensured, and the number of the winding ribs is easier to control.

Preferably, as shown in fig. 4, the winding bars may be provided with 9, and the magnets 32 may be provided with 6. At this time, the outer diameter of the stator assembly 4 of the brushless motor 100 can be 20 mm-25 mm, so that the output power of the brushless motor 100 is larger while the volume is small, the working noise is smaller, and the use requirement of the intelligent mobile device can be met.

As for the housing 1, as shown in fig. 2 and 3 again, the housing 1 includes a main housing 12, a front end cover 11 and a rear end cover 13, where the main housing 12 is in a cylindrical shape with two open ends, preferably, the main housing 12, the front end cover 11 and the rear end cover 13 are coaxially disposed, the stator assembly 4 is sleeved on the inner side of the main housing 12 and forms a rotation-stopping fit with the main housing 12, specifically, the outer peripheral side of the reinforcing bracket 411 is fixedly sleeved on the inner side of the main housing 12, so that the entire stator assembly 4 is fixed in the main housing 12, and the appearance of the main housing 12 is in a non-circular shape, so that the entire brushless motor 100 is placed; the front end cover 11 is covered and arranged at the front end opening of the main shell 12 so as to seal the front end of the stator assembly 4; the rear end cover 13 is covered on the rear end of the main casing 12 to seal the rear end of the stator assembly 4; the rotating shaft 2 is rotatably arranged on the front end cover 11 and the rear end cover 13 respectively, and at least part of the rotating shaft 2 can extend out from the front end cover 11 and is suitable for being connected with equipment to be driven. Preferably, the front cover 11 and the main housing 12 may be connected by a plurality of bolts, and the rear cover 13 and the main housing 12 may also be connected by a plurality of bolts.

It should be noted that, the front end refers to the front end of the power output end of the rotating shaft 2, and the rear end is disposed opposite to the front end, so that the description of the present utility model is referred to herein for convenience of description.

In addition, the casing 1 further includes a cover plate 6 covering the rear end of the stator assembly 4, the cover plate 6 is located between the stator assembly 4 and the rear end cover 13, one of the winding bracket 42 and the cover plate 6 is provided with a clamping portion, and the other is provided with a fastening portion, and the other is in clamping fit with the clamping portion through the clamping portion, so that the cover plate 6 can be covered at the rear end of the winding bracket 42, and the coil 43 of the stator assembly 4 is better protected. Preferably, as shown in fig. 2 and 3, the clamping portion includes a plurality of hooks 422 protruding from the rear end of the winding bracket 42, the hooks 422 are distributed along the circumferential direction of the winding bracket 42 at intervals, and the clamping portion includes a plurality of clamping grooves 61 disposed on the circumferential side of the cover plate 6, and the hooks 422 are clamped in the clamping grooves 61 in a one-to-one correspondence manner, so as to fix the cover plate 6 and the stator assembly 4.

Moreover, a sleeve 7 is further sleeved on the outer peripheral side of the connection part of the cover plate 6 and the winding bracket 42, the sleeve 7 is sleeved on the inner side of the main casing 12, and the outer peripheral surface of the sleeve 7 is flush with the outer peripheral surface of the reinforcing bracket 411, so that the stator assembly 4, the cover plate 6 and the sleeve 7 can be fixed in the main casing 12.

The rear end cover 13 is connected with the rotating shaft 2 through the first bearing, the rear end cover 13 is provided with an abutting surface abutting against the rear side surface of the first bearing, a wavy spring piece 5 is further arranged between the abutting surface and the rear side surface of the first bearing, and when the rear end cover 13 is connected with the main shell 12, the wavy spring piece 5 is in pressure contact with the rear end cover 13, so that certain axial precompression can be provided to ensure that the first bearing is fixed stably and reliably.

The utility model also provides a robot, which comprises the brushless motor 100, wherein one or more brushless motors 100 can be arranged, the robot can be driven to move through the brushless motor 100, and/or arm joints and/or leg joints of the robot can be driven to move through the brushless motor 100, so that the robot can move flexibly and variously, and is more energy-saving.

It will be apparent that the embodiments described above are merely some, but not all, embodiments of the utility model. Based on the embodiments of the present utility model, those skilled in the art may make other different changes or modifications without making any creative effort, which shall fall within the protection scope of the present utility model.

Claims (10)

1. A brushless motor, comprising:

a housing;

the rotating shaft is rotatably arranged on the shell and at least partially extends out from one end of the shell;

a rotor assembly provided on an outer circumferential side of the rotating shaft;

the stator assembly is sleeved on the inner side of the shell and surrounds the outer periphery of the rotor assembly;

the stator assembly comprises a plurality of winding ribs, the plurality of winding ribs are annularly arranged on the outer peripheral side of the rotor assembly in a surrounding mode, each winding rib extends along the radial direction of the rotating shaft, a winding area is formed between every two adjacent winding ribs, and the cross section of the winding area is in a fan-shaped arrangement.

2. A brushless motor as claimed in claim 1, wherein each adjacent two of said winding ribs are spaced apart at a distance of 0.95mm to 1.05mm near one end of said rotor assembly.

3. The brushless motor of claim 1, wherein the stator assembly comprises a reinforcing member and a winding support nested with the reinforcing member, the reinforcing member is provided with a plurality of reinforcing portions, the reinforcing portions are annularly arranged on the outer peripheral side of the rotor assembly, the winding support is provided with a plurality of isolating portions, and the isolating portions are respectively sleeved on the outer sides of the reinforcing portions in a one-to-one correspondence manner to form the winding ribs.

4. A brushless motor as claimed in claim 3, wherein said reinforcing member includes a reinforcing bracket provided in a ring shape, each of said reinforcing portions including a reinforcing protrusion protruding from an inner ring side of said reinforcing bracket, each of said reinforcing protrusions being provided to extend in a radial direction of said rotation shaft;

the winding support comprises a winding frame which is arranged in an annular mode, each isolation portion comprises a winding groove which is concavely arranged from the outer ring side to the inner ring side of the winding frame, the reinforcing support is sleeved on the outer side of the winding frame, and the reinforcing protrusions are arranged in the winding grooves in a one-to-one correspondence mode.

5. A brushless motor as claimed in claim 4, wherein each of said winding grooves is provided open toward one end of said rotor assembly such that each of said reinforcing protrusions is exposed from a corresponding one of said winding grooves.

6. A brushless motor as claimed in claim 3, wherein said reinforcing member comprises a plurality of silicon steel sheets arranged in a stacked manner; and/or the number of the groups of groups,

the winding bracket is made of an insulating material; and/or the number of the groups of groups,

the reinforcing piece and the winding bracket are integrally arranged.

7. The brushless motor of claim 1 wherein the rotor assembly comprises a mounting bracket and a plurality of magnets disposed on the mounting bracket, the mounting bracket being disposed around the outside of the rotating shaft, the plurality of magnets being disposed around the periphery of the mounting bracket along the circumference of the rotating shaft.

8. A brushless motor as claimed in claim 7, wherein 9 winding ribs are provided and 6 magnets are provided.

9. The brushless motor of claim 1 wherein said housing comprises:

the stator assembly is sleeved on the inner side of the main shell and forms rotation-stopping fit with the main shell;

the front end cover is covered at the front end opening part of the main shell;

a rear end cover covering the rear end of the main housing;

the rotating shafts are respectively arranged on the front end cover and the rear end cover in a rotating mode, and at least part of the rotating shafts can extend out of the front end cover.

10. A robot comprising a brushless motor as claimed in any one of claims 1 to 9.