阅读说明：本技术 电机转子组件及电机 (Motor rotor subassembly and motor ) 是由 林书廷 林峭 于 2021-02-05 设计创作，主要内容包括：本发明公开了一种电机转子组件及电机,电机转子组件包括转轴、整流子和转子铁芯,所述转轴用于输出动力；所述整流子套设于所述转轴,所述整流子包括用于与碳刷接触的第一端和用于与转子绕组电连接的第二端；所述转子铁芯套设于所述整流子,所述第一端位于所述转子铁芯的一侧,所述第二端位于所述转子铁芯的另一侧,能够有效减少电机的高度,降低产品重心。(The invention discloses a motor rotor assembly and a motor, wherein the motor rotor assembly comprises a rotating shaft, a commutator and a rotor core, and the rotating shaft is used for outputting power; the commutator is sleeved on the rotating shaft and comprises a first end used for being in contact with the carbon brush and a second end used for being electrically connected with the rotor winding; the rotor core is sleeved with the commutator, the first end is located on one side of the rotor core, and the second end is located on the other side of the rotor core, so that the height of the motor can be effectively reduced, and the center of gravity of a product is reduced.)

1. An electric machine rotor assembly, comprising:

the rotating shaft is used for outputting power;

the commutator is sleeved on the rotating shaft and comprises a first end used for being in contact with the carbon brush and a second end used for being electrically connected with the rotor winding;

the rotor core is sleeved on the commutator, the first end is located on one side of the rotor core, and the second end is located on the other side of the rotor core.

2. The electric machine rotor assembly of claim 1 wherein the rotor core is wound with a rotor winding, the rotor winding being provided with a winding lead-out on one side of the rotor core, the winding lead-out being electrically connected to the second end.

3. The electric machine rotor assembly of claim 1, further comprising an insulation sleeve disposed between the commutator and the rotor core.

4. The electric machine rotor assembly of claim 1, wherein the commutator comprises an insulator and a plurality of metal conductors disposed longitudinally along an outer wall of the insulator, the plurality of metal conductors being spaced circumferentially around the insulator.

5. The electric machine rotor assembly of claim 4, wherein the metal conductors include first conductor portions and second conductor portions, the second conductor portions being located at the second end, a spacing between adjacent ones of the second conductor portions being greater than a spacing between adjacent ones of the first conductor portions.

6. The electric machine rotor assembly of claim 4, wherein the insulator is integrally formed with the metal conductor.

7. The electric machine rotor assembly of claim 1, wherein the commutator comprises a plurality of spaced segments at the first end and a plurality of spaced third conductor portions at the second end, the segments extending radially of the commutator and being perpendicular to the shaft, and an insulating slot is formed between two adjacent segments.

8. The electric machine rotor assembly of claim 1 wherein the rotor core is circumferentially spaced with a plurality of tooth blocks around which rotor windings are wound.

9. An electrical machine comprising an electrical machine rotor assembly as claimed in any one of claims 1 to 8.

10. The electric machine of claim 9 further comprising a motor housing, a carbon brush support, and carbon brushes disposed on the carbon brush support, the electric machine rotor assembly being located within the motor housing, the carbon brush support and the carbon brushes being located on a side of the first end, the carbon brushes being in pressure contact with the first end, the carbon brushes and the carbon brush support being disposed within an end of the rotor winding.

Technical Field

The invention relates to the technical field of motors, in particular to a motor rotor assembly and a motor.

Background

In daily-used household appliances, a brushed motor is widely applied due to good performance, but in the existing structure of the brushed motor, components such as a rotor, a winding outgoing line, a commutator, a carbon brush and the like are generally arranged on one side of the motor in the axial direction, so that the height of the motor is large, namely the diameter of the brushed motor is small, and the problem of difficult industrial design is caused for more small household appliances.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the motor rotor assembly and the motor, which can effectively reduce the height of the motor and lower the center of gravity of a product.

In a first aspect, an embodiment of the present invention provides a motor rotor assembly, including a rotating shaft, a commutator, and a rotor core, where the rotating shaft is used for outputting power; the commutator is sleeved on the rotating shaft and comprises a first end used for being in contact with the carbon brush and a second end used for being electrically connected with the rotor winding; the rotor core is sleeved on the commutator, the first end is located on one side of the rotor core, and the second end is located on the other side of the rotor core.

According to the rotor assembly of the motor provided by the invention, at least the following beneficial effects are achieved: motor rotor subassembly includes the pivot, commutator and rotor core, locate the pivot with the commutator cover, the commutator is located to the rotor core cover, the commutator is held including the second that is used for the first end with the carbon brush contact and is used for being connected with the rotor winding electricity, first end is located one side of rotor core, the second end is located rotor core's opposite side, through sinking the commutator in rotor core, pass rotor core, the both ends of commutator press respectively to touch the carbon brush and connect the rotor winding, can effectively reduce the height of motor, increase footpath height ratio, thereby reduce the focus of product, make things convenient for the industrial design of small household appliances.

According to some embodiments of the invention, the rotor core is wound with a rotor winding, the rotor winding is provided with a winding lead-out wire at one side of the rotor core, and the winding lead-out wire is electrically connected with the second end. Rotor core has around rotor winding, and the commutator passes rotor core to make the second end of commutator be connected with the winding lead-out wire electricity in rotor core one side, solve traditional motor effectively with rotor core, winding lead-out wire, commutator setting in axial one side so that cause the problem that the motor footpath height ratio is little, can reduce the whole height of motor.

According to some embodiments of the invention, an insulation sleeve is further provided between the commutator and the rotor core. Through the outside cover at the commutator establish insulating external member to be connected with rotor core's inboard, can reduce loss and control temperature effectively, and simple to operate is favorable to simplifying rotor core's insulation technology.

According to some embodiments of the invention, the commutator comprises an insulator and a plurality of metal conductors disposed longitudinally along an outer wall of the insulator, the plurality of metal conductors being disposed at intervals around a circumference of the insulator. The rectifier includes insulator and a plurality of metallic conductor, and a plurality of metallic conductor set up along the surface circumference interval of insulator, press with a plurality of metallic conductor through the carbon brush, guarantee the revolving force that the motor lasts.

According to some embodiments of the invention, the metal conductor comprises a first conductor portion and a second conductor portion, the second conductor portion being located at the second end, a spacing between two adjacent second conductor portions being greater than a spacing between two adjacent first conductor portions. Through the interval that designs between the second conductor portion is greater than the interval between the first conductor portion, guarantee that the interval size between the second conductor portion is suitable, make things convenient for rotor winding to twine in second conductor portion.

According to some embodiments of the invention, the insulator is integrally formed with the metal conductor. Through the design of integrally forming the insulator and the metal conductor, the motor assembly is simple in structure and convenient to assemble.

According to some embodiments of the present invention, the commutator comprises a plurality of segments at the first end and a plurality of third conductor portions at the second end, the segments extend in a radial direction of the commutator and are perpendicular to the rotating shaft, and an insulation groove is formed between two adjacent segments. The commutator includes commutator segment and third conductor portion, the third conductor portion is located the second end, be used for being connected with the rotor winding electricity, make things convenient for the winding lead-out wire to twine in the third conductor portion, the commutator segment is located first end, radial extension along the commutator sets up and the perpendicular to pivot, the commutator segment is the lamellar structure, two adjacent commutator segments equidistant formation are on a parallel with the insulating bath of pivot, through adopting flaky plane commutator structure, the occupation space of the commutator that significantly reduces on the axial direction, reduce the structure height that has the brush motor, make it is thinner to have the brush motor, the range of application that has the brush motor has been widened.

According to some embodiments of the invention, the rotor core is provided with a plurality of tooth blocks around which the rotor winding is wound at intervals in a circumferential direction. The rotor core is provided with a plurality of tooth blocks at equal intervals in the circumferential direction, and the tooth blocks are respectively wound by one or more rotor coils of the rotor winding.

In a second aspect, embodiments of the present invention provide an electric machine comprising an electric machine rotor assembly as described above in relation to the first aspect.

The motor provided by the invention at least has the following beneficial effects: the motor includes the motor rotor subassembly as above first aspect, motor rotor subassembly includes the pivot, commutator and rotor core, locate the pivot with the commutator cover, the commutator is located to the rotor core cover, the commutator is including being used for the first end with the carbon brush contact and being used for the second end of being connected with the rotor winding electricity, first end is located one side of rotor core, the second end is located rotor core's opposite side, through sinking the commutator in rotor core, pass rotor core, the both ends of commutator press respectively to touch the carbon brush and connect rotor winding, can effectively reduce the height of motor, increase footpath height ratio, thereby reduce the focus of product, make things convenient for the industrial design of small household appliances.

According to some embodiments of the invention, the motor rotor assembly further comprises a motor housing, a carbon brush support and a carbon brush arranged on the carbon brush support, the motor rotor assembly is located inside the motor housing, the carbon brush support and the carbon brush are located on one side of the first end, the carbon brush is in press contact with the first end, and the carbon brush support are arranged inside the end portion of the rotor winding. The motor is further provided with a motor shell, a carbon brush support and a carbon brush, the electronic rotor assembly is arranged inside the motor shell, the carbon brush support is arranged on one side where the first end of the commutator is located, the carbon brush is radially arranged on the carbon brush support, the commutator penetrates through the rotor core, the carbon brush presses and contacts the first end of the commutator, the second end of the commutator conducts the winding lead-out wire, the carbon brush and the carbon brush support are arranged inside the end portion of the rotor winding, the structure of the motor among all the parts is more compact, the height of the motor can be effectively reduced, and the motor is convenient to widely apply to small household.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of a rotor assembly of an electric machine according to an embodiment of the present invention;

FIG. 2 is an exploded schematic view of an electric machine rotor assembly according to some embodiments of the present invention;

FIG. 3 is a schematic plan view of a motor component of some embodiments of the invention;

FIG. 4 is a schematic diagram of a metal conductor structure according to some embodiments of the invention;

FIG. 5 is a schematic diagram of a commutator according to some embodiments of the present invention;

FIG. 6 is a schematic structural view of a rotor assembly of an electric machine according to some embodiments of the present invention;

FIG. 7 is a schematic structural view of a motor component of some embodiments of the present invention;

reference numerals:

an electric motor rotor assembly 100; a rotating shaft 110; a commutator 120; a first end 121; a second end 122; a rotor core 130; the tooth blocks 131; a groove 132; a winding lead-out 140; an insulating sleeve 150; an insulator 160; a metal conductor 170; a first conductor portion 171; a second conductor portion 172; a carbon brush 180; a rotor winding 190; a commutator segment 200; a third conductor portion 210; an insulating trench 220.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

The existing motor usually arranges the rotor core, the winding lead-out wire and the components such as the commutator, the carbon brush and the carbon brush bracket on the same side, so that the diameter height of the motor is smaller, the motor is not convenient to install in small household appliances, and the problems of difficult industrial design and the like are caused.

The invention provides a motor rotor assembly and a motor, which can effectively reduce the height of the motor and lower the center of gravity of a product.

The embodiments of the present invention will be further explained with reference to the drawings.

Referring to fig. 1 to 3, a first embodiment of the present invention provides a rotor assembly 100 for an electric motor, including a rotating shaft 110, a commutator 120, and a rotor core 130, where the rotating shaft 110 is used for outputting power; the commutator 120 is sleeved on the rotating shaft 110, and the commutator 120 includes a first end 121 for contacting with the carbon brush and a second end 122 for electrically connecting with the rotor winding; the rotor core 130 is sleeved on the commutator 120, the first end 121 is located at one side of the rotor core 130, and the second end 122 is located at the other side of the rotor core 130.

The motor rotor assembly 100 comprises a rotating shaft 110, a commutator 120 and a rotor core 130, the rotating shaft 110 is arranged on the commutator 120 in a sleeved mode, the commutator 120 is arranged on the rotor core 130 in a sleeved mode, the commutator 120 comprises a first end 121 used for being in contact with a carbon brush and a second end 122 used for being electrically connected with a rotor winding, the first end 121 is located on one side of the rotor core 130, the second end 122 is located on the other side of the rotor core 130, the commutator 120 sinks into the rotor core 130, the commutator passes through the rotor core 130, the two ends of the commutator 120 are respectively in pressure contact with the carbon brush 180 and are connected with the rotor winding 190, the diameter of the motor rotor assembly 100 is increased, the height of a motor can be effectively reduced, the diameter-height ratio is increased, the gravity center of a product is.

As shown in fig. 3 and 7, according to some embodiments of the present invention, a rotor winding 190 is wound on the rotor core 130, the rotor winding 190 is provided with a winding lead-out wire 140 at one side of the rotor core 130, and the winding lead-out wire 140 is electrically connected to the second end 122. The rotor core 130 is wound with the rotor winding 190, and the commutator 120 penetrates through the rotor core 130, so that the second end 122 of the commutator 120 is electrically connected with the winding outgoing line 140 on one side of the rotor core 130, the problem that the diameter and height of the motor are small because the rotor core 130, the winding outgoing line 140 and the commutator 120 are arranged on one axial side of a traditional motor is effectively solved, and the overall height of the motor can be reduced.

As shown in fig. 1 and 2, according to some embodiments of the present invention, an insulation kit 150 is further provided between the commutator 120 and the rotor core 130. Through establish insulating external member 150 in the outside cover of commutator 120 to be connected with rotor core 130's inboard, insulating nature is good, can reduce loss and control temperature effectively, can directly overlap insulating external member 150 axial in the commutator 120 outside during the installation, simple to operate is favorable to simplifying rotor core 130's insulation technology.

As shown in fig. 2, according to some embodiments of the present invention, the commutator 120 includes an insulator 160 and a plurality of metal conductors 170 disposed longitudinally along an outer wall of the insulator 160, the plurality of metal conductors 170 being disposed at intervals around a circumference of the insulator 160. The commutator 120 includes an insulator 160 and a plurality of metal conductors 170, the plurality of metal conductors 170 are circumferentially spaced along an outer surface of the insulator 160, and the carbon brush 180 is pressed against the plurality of metal conductors 170 to ensure a continuous rotational force of the motor. It should be noted that the metal conductor 170 of the present embodiment is mainly made of copper, and other metal materials may be selected besides, and the embodiment of the present invention is not limited in particular.

As shown in fig. 3 and 4, according to some embodiments of the present invention, the metal conductor 170 includes a first conductor portion 171 and a second conductor portion 172, the second conductor portion 172 is located at the second end 122, and a spacing between two adjacent second conductor portions 172 is greater than a spacing between two adjacent first conductor portions 171. By designing the interval between two adjacent second conductor parts 172 to be larger than the interval between two adjacent first conductor parts 171, the interval between two adjacent second conductor parts 172 is ensured to be appropriate, and the winding lead-out wires 140 are conveniently wound on the second conductor parts 172.

According to some embodiments of the present invention, insulator 160 is integrally formed with metal conductor 170. By integrally forming the insulator 160 and the metal conductor 170, the motor assembly is simple in structure and convenient to assemble.

It should be noted that, in some embodiments of the present invention, the insulation sleeve 150 and the insulation body 160 may be made of an insulation material such as plastic, rubber, bakelite, and the like, and the embodiments of the present invention are not limited in particular.

As shown in fig. 5 and 6, in contrast to the commutator 120 shown in fig. 2, another embodiment of the present invention provides a planar commutator 120, where the commutator 120 includes a plurality of segments 200 spaced apart from each other at a first end 121 and a plurality of third conductor portions 210 spaced apart from each other at a second end 122, the segments 200 extend in a radial direction of the commutator 120 and are perpendicular to the rotating shaft 110, and an insulation slot 220 is formed between two adjacent segments 200. The commutator 120 comprises commutator segments 200 and a third conductor portion 210, the third conductor portion 210 is located at the second end 122 and is used for being electrically connected with a rotor winding, a winding leading-out wire 140 is conveniently wound on the third conductor portion 210, the commutator segments 200 are located at the first end 121 and are arranged along the radial extension of the commutator 120 and perpendicular to the rotating shaft 110, the commutator segments 200 are of a sheet structure, two adjacent commutator segments 200 are equally spaced to form insulating grooves 220 parallel to the rotating shaft 110, the occupied space of the commutator 120 in the axial direction is greatly reduced by adopting the sheet planar commutator 120 structure, the structural height of the motor is reduced, and the application range of the motor is widened.

As shown in fig. 1 and 7, according to some embodiments of the present invention, the rotor core 130 is provided with a plurality of tooth blocks 131 around which the rotor winding 190 is wound at intervals in a circumferential direction. The rotor core 130 has a plurality of tooth blocks 131 arranged at equal intervals in the circumferential direction, and the plurality of tooth blocks 131 are respectively wound by one or more rotor coils of the rotor winding 190.

Further, a plurality of identical grooves 132 are formed between the plurality of tooth blocks 131, and the grooves 132 have a certain interval for embedding the rotor winding 190. It should be noted that the number of the grooves 132 of the rotor core 130 according to the embodiment of the present invention may be eight, ten, fourteen, or sixteen, and the embodiment of the present invention is not particularly limited.

It should be noted that, each component of the motor rotor assembly 100 is cylindrical, the through hole is formed in the middle of the commutator 120 to be matched with the shape of the rotating shaft 110, so that raw materials for manufacturing are saved, the commutator 120 is sleeved on the rotating shaft 110 during assembly, the insulating sleeve member 150 is axially sleeved on the outer side of the commutator 120, and then the rotor core 130 is mounted.

A second aspect embodiment of the invention provides an electric machine comprising an electric machine rotor assembly 100 as described above in relation to the first aspect.

As shown in fig. 1, 2, 3 and 7, the motor includes the motor rotor assembly 100 according to the first aspect, the motor rotor assembly 100 includes a rotating shaft 110, a commutator 120 and a rotor core 130, the commutator 120 is sleeved on the rotating shaft 110, the rotor core 130 is sleeved on the commutator 120, the commutator 120 includes a first end 121 for contacting with the carbon brush 180 and a second end 122 for electrically connecting with the rotor winding, the first end 121 is located on one side of the rotor core 130, the second end 122 is located on the other side of the rotor core 130, the commutator 120 is sunk into the rotor core 130, passes through the rotor core 130, and two ends of the commutator 120 respectively press the carbon brush 180 and connect with the rotor winding 190, so as to effectively reduce the height of the motor, increase the radial height ratio, reduce the center of gravity of the household appliance, and facilitate the industrial design of a small appliance.

As shown in fig. 7, according to some embodiments of the present invention, the motor assembly 100 further includes a motor housing (not shown), a carbon brush holder (not shown), and a carbon brush 180 disposed on the carbon brush holder, wherein the motor rotor assembly 100 is located inside the motor housing, the carbon brush holder and the carbon brush 180 are located on a side where the first end 121 is located, the carbon brush 180 presses the first end 121, and the carbon brush 180 and the carbon brush holder are disposed inside an end of the rotor winding 190. The motor further comprises a motor shell, a carbon brush support and a carbon brush 180, the electronic rotor assembly is arranged inside the motor shell, the carbon brush support is arranged on one side of the first end 121 of the commutator 120, the carbon brush 180 is radially arranged on the carbon brush support, the commutator 120 penetrates through the rotor core 130, the first end 121 of the commutator 120 is pressed and contacted by the carbon brush 180, the second end 122 of the commutator 120 is communicated with the winding lead-out wire 140, the carbon brush 180 and the carbon brush support are arranged inside the end portion of the rotor winding 190, the structure of the motor is more compact, the height of the motor can be effectively reduced, and the motor is convenient to widely apply to small household appliances.

Specifically, the commutator 120 is sunk into the rotor core 130 and penetrates through a through hole in the middle of the rotor core 130, the carbon brush support is arranged on one side of the first end 121 of the commutator 120, the carbon brushes 180 are radially arranged on the carbon brush support, each metal conductor 170 of the commutator 120 is uniformly distributed around the rotor core 130, the carbon brushes 180 are in pressure contact with the metal conductors 170 on the commutator 120, a power supply supplies current to a group of rotor windings 190 connected with the metal conductors 170 of the commutator 120 through the pressure contact, and a winding lead-out wire 140 of each rotor winding 190 is connected with the second end 122 of the commutator 120 in a conduction mode to form an electromagnetic loop, so that the rotor core 130 of the motor is driven to rotate.

It should be noted that the carbon brush holder may also be disposed at other positions, such as on the motor housing, and the embodiment of the present invention is not limited in particular.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.