CN216134392U - Novel brush motor - Google Patents
Novel brush motor Download PDFInfo
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- CN216134392U CN216134392U CN202122576417.0U CN202122576417U CN216134392U CN 216134392 U CN216134392 U CN 216134392U CN 202122576417 U CN202122576417 U CN 202122576417U CN 216134392 U CN216134392 U CN 216134392U
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- carbon brush
- stator
- assembly
- rotor
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Abstract
The utility model discloses a novel brush motor, which comprises a stator assembly, a rotor assembly, a carbon brush assembly and a shell, wherein the stator assembly comprises a stator core and a stator winding wound on the stator core, and the stator core is also provided with a commutator bar electrically connected with the stator winding; the rotor assembly is positioned inside the stator core and comprises a rotor core, a rotating shaft penetrating through the rotor core and magnetic steel arranged on the rotor core; the carbon brush assembly is arranged on the rotor assembly and is contacted with the commutator segment; the stator assembly is mounted on the casing. The winding is changed from being wound on the rotor to being wound on the stator core, and the stator winding can directly radiate heat through the shell, so that the stator winding has better radiating performance; through adopt magnet steel and can adopt strong magnetic material at the rotor subassembly, reduce the magnet steel volume, can effectively improve the power density who has brush direct current motor, in addition, the rotor subassembly need not the wire winding, has reduced whole size, satisfies the dynamic balance requirement more easily, has reduced the technology degree of difficulty of motor preparation.
Description
Technical Field
The utility model relates to the field of motors, in particular to a novel brush motor.
Background
The brush DC motor is a DC motor, the stator of the brush motor is provided with a fixed main pole and a brush, and the rotor is provided with an armature winding and a commutator. Electric energy of a direct current power supply enters an armature winding through an electric brush and a commutator to generate armature current, and a magnetic field generated by the armature current interacts with a main magnetic field to generate electromagnetic torque so that a motor rotates to drive a load.
In the existing brush direct current motor, on one hand, because an armature winding is positioned in an internal rotor, the heat of the winding can only be conducted to an end cover through internal air, so that the heat dissipation is poor, the diameter of the wound rotor is larger, the dynamic balance requirement is high, and the manufacturing process difficulty is high; on the other hand, the permanent magnet is arranged in the stator of the outer ring of the motor, the permanent magnet needs to occupy a certain proportion of the circumference of the stator, and the size of the permanent magnet is large, so that the power density of the motor is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve at least one of the technical problems in the prior art, and provides a novel brush motor which has better heat dissipation performance and can effectively improve the power density of the brush direct current motor.
The embodiment of the utility model provides a novel brush motor, which comprises a stator assembly, a rotor assembly, a carbon brush assembly and a shell, wherein:
the stator assembly comprises a stator core and a stator winding wound on the stator core, and the stator core is also provided with a commutator bar electrically connected with the stator winding;
the rotor assembly is positioned inside the stator core and comprises a rotor core, a rotating shaft penetrating through the rotor core and magnetic steel arranged on the rotor core;
the carbon brush assembly is arranged on the rotor assembly and is in contact with the commutator bar;
the stator assembly is mounted on the casing.
The novel brush motor provided by the utility model at least has the following beneficial effects: the winding is changed from being wound on the rotor to being wound on the stator core by changing the winding layout of the traditional brush motor, the stator assembly is arranged on the shell, and the stator winding can directly dissipate heat or dissipate heat through the shell, so that the brush motor has better heat dissipation performance; through adopting the magnet steel at the rotor subassembly, can adopt strong magnetic material moreover, reduce the magnet steel volume, can effectively improve the power density who has brush direct current motor, in addition, the rotor subassembly need not the wire winding, has reduced whole size, satisfies the dynamic balance requirement more easily, has reduced the technology degree of difficulty of motor preparation.
In the novel brush motor, the carbon brush assembly comprises a carbon brush support fixed on the rotor core or the rotating shaft, a carbon brush sleeve arranged on the carbon brush support and a carbon brush arranged inside the carbon brush sleeve, and an opening of the carbon brush sleeve faces the commutator segment.
The carbon brush assembly is fixed on the rotor core or the rotating shaft through the carbon brush support, so that the carbon brush assembly rotates along with the rotor assembly; the carbon brush sets up inside the carbon brush cover, and the opening of carbon brush cover is towards the commutator segment, and carbon brush subassembly rotates the in-process, and the carbon brush can contact different commutator segments, realizes the winding switching-over.
In the novel brush motor, the carbon brush support is fixed on the rotating shaft, a first through hole for the rotating shaft to penetrate is formed in the middle of the carbon brush support, and the carbon brush support is tightly matched and connected with the rotating shaft through the first through hole.
The first through hole is formed in the middle of the carbon brush support, and the rotating shaft can penetrate through the first through hole, so that the carbon brush support is fixed on the rotor assembly and rotates along with the rotor assembly.
In the novel brush motor, the carbon brush support is provided with an installation block for installing the carbon brush sleeve, and the carbon brush sleeve is sleeved on the installation block.
In foretell novel brush motor, stator core includes the middle part ring and sets up the stator tooth in the middle part ring outside, adjacent two form the stator slot between the stator tooth, the commutator segment set up in the middle part ring.
In the novel brush motor, the inner wall of the middle ring is provided with a first electrode and a second electrode, and the carbon brush sleeve is provided with a first mounting groove facing the commutator segment, a second mounting groove facing the first electrode and a third mounting groove facing the second electrode.
In the novel brush motor, the carbon brush is arranged in the first mounting groove, and the carbon brush is arranged in the second mounting groove or the third mounting groove.
In the novel brush motor, the carbon brush holder is provided with a plurality of carbon brush sleeves, the second mounting groove of one of the adjacent carbon brush sleeves is provided with the carbon brush, and the third mounting groove of the other carbon brush sleeve is provided with the carbon brush.
In the novel brush motor, a first electrode and a second electrode are arranged inside the casing, and the carbon brush sleeve is provided with a first mounting groove facing the commutator segment, a second mounting groove facing the first electrode, and a third mounting groove facing the second electrode.
In the novel brush motor, the casing is located including the cover stator module's middle part casing, set up respectively the upper end cover and the lower extreme cover at middle part casing both ends, the upper end cover with the lower extreme cover all is provided with the bearing frame, the inside confession that is provided with of bearing frame the bearing that the pivot was worn to establish.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the example serve to explain the principles of the utility model and not to limit the utility model.
The utility model is further described below with reference to the accompanying drawings and examples;
fig. 1 is a schematic structural diagram of a novel brush motor provided by an embodiment of the utility model;
fig. 2 is an exploded view of a novel brush motor according to an embodiment of the present invention;
fig. 3 is another exploded view of a novel brush motor according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, if there are first and second described only for the purpose of distinguishing technical features, it is not understood that relative importance is indicated or implied or that the number of indicated technical features or the precedence of the indicated technical features is implicitly indicated or implied.
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 embodiment of the utility model provides a novel brush motor, which has better heat dissipation performance and can effectively improve the power density of a brush direct current motor.
The embodiments of the present invention will be further explained with reference to the drawings.
Referring to fig. 1 to 3, an embodiment of the present invention provides a novel brush motor, including a stator assembly 100, a rotor assembly 200, a carbon brush assembly 300, and a casing 400, wherein:
the stator assembly 100 includes a stator core 110 and a stator winding wound around the stator core 110, and the stator core 110 is further provided with a commutator bar 120 electrically connected with the stator winding;
the rotor assembly 200 is located inside the stator core 110, and the rotor assembly 200 includes a rotor core 210, a rotating shaft 220 penetrating the rotor core 210, and magnetic steel arranged on the rotor core 210;
the carbon brush assembly 300 is mounted on the rotor assembly 200 and contacts the segment 120;
the stator assembly 100 is mounted on the casing 400.
According to the novel brush motor provided by the embodiment of the utility model, the winding is changed from being wound on the rotor to being wound on the stator core 110 by changing the winding layout of the traditional brush motor, the stator assembly 100 is installed on the casing 400, the stator winding can directly radiate heat or radiate heat through the casing 400, and the novel brush motor has good heat radiation performance; through adopting the magnet steel at rotor subassembly 200, can adopt strong magnetic material moreover, reduce the magnet steel volume, can effectively improve the power density who has brush direct current motor, in addition, rotor subassembly 200 need not the wire winding, has reduced whole size, satisfies the dynamic balance requirement more easily, has reduced the technology degree of difficulty of motor preparation.
It can be understood that the magnetic steel may be embedded in the rotor core 210, or may be attached to the rotor core 210.
Referring to fig. 2 and 3, in the novel brush motor, the carbon brush assembly 300 includes a carbon brush holder 310 fixed to the rotor core 210 or the rotating shaft 220, a carbon brush holder 320 disposed on the carbon brush holder 310, and a carbon brush disposed inside the carbon brush holder 320, wherein an opening of the carbon brush holder 320 faces the segment 120.
The carbon brush assembly 300 is fixed on the rotor core 210 or the rotating shaft 220 through the carbon brush holder 310, so that the carbon brush assembly 300 rotates along with the rotor assembly 200; the carbon brush is arranged inside the carbon brush sleeve 320, the opening of the carbon brush sleeve 320 faces the commutator segment 120, and the carbon brush can contact different commutator segments 120 in the rotating process of the carbon brush assembly 300 to realize the commutation of the winding.
It should be noted that the carbon brush holder 310 is made of an insulating material, and may be a plastic material, for example; the carbon brush sleeve 320 is made of a conductive material, such as copper; the carbon brush holder 310 may be provided with a plurality of carbon brush holders 320, for example, the carbon brush holder 310 may be provided with 4 carbon brush holders 320 in the embodiment shown in fig. 2.
Referring to fig. 2 and 3, in the novel brush motor, the carbon brush holder 310 is fixed to the rotating shaft 220, a first through hole 311 through which the rotating shaft 220 penetrates is formed in the middle of the carbon brush holder 310, and the carbon brush holder 310 is tightly fitted and connected with the rotating shaft 220 through the first through hole 311.
Through setting up first through-hole 311 in the middle part of carbon brush support 310, pivot 220 can pass first through-hole 311 for carbon brush support 310 is fixed on rotor assembly 200, follows rotor assembly 200 and rotates together.
In the novel brush motor, the carbon brush holder 310 is provided with a mounting block 312 for mounting the carbon brush sleeve 320, and the carbon brush sleeve 320 is sleeved on the mounting block 312.
Referring to the embodiment shown in fig. 2 and 3, the carbon brush holder 310 is provided with four mounting blocks 312, four carbon brush sleeves 320 are correspondingly provided, and the four carbon brush sleeves 320 are respectively sleeved in the four mounting blocks 312.
Referring to fig. 3, in the novel brush motor, the stator core 110 includes a middle ring 111 and stator teeth 112 disposed outside the middle ring 111, a stator slot is formed between two adjacent stator teeth 112, and the commutator segment 120 is disposed on the middle ring 111.
The stator winding is wound on the stator teeth 112, the end of the stator winding is electrically connected to the commutator segment 120 of the middle ring 111, the commutator segment 120 is arranged on the middle ring 111, the carbon brush assembly 300 is positioned inside the middle ring 111 of the stator core 110, and the opening of the carbon brush sleeve 320 faces the commutator segment 120, so that the carbon brush in the carbon brush sleeve 320 can contact with the commutator segment 120 on the middle ring 111, and the carbon brush sleeve 320 also faces different commutator segments 120 along with the rotation of the rotor assembly 200, so that the carbon brush contacts with different commutator segments 120.
Referring to fig. 2 and 3, in the novel brush motor, the inner wall of the middle ring 111 is provided with a first electrode 500 and a second electrode 600, and the carbon brush holder 320 is provided with a first mounting groove 321 facing the commutator segment 120, a second mounting groove 322 facing the first electrode 500, and a third mounting groove 323 facing the second electrode 600.
In the present embodiment, the first electrode 500 and the second electrode 600 are disposed on the inner wall of the middle ring 111; it is understood that the first electrode 500 and the second electrode 600 may be disposed at other positions as long as contact with the carbon brush in the carbon brush holder 320 is achieved.
In the novel brush motor, the first mounting groove 321 is provided with a carbon brush, and the second mounting groove 322 or the third mounting groove 323 is provided with a carbon brush.
It will be appreciated that in the same carbon brush holder 320, only two carbon brushes are typically provided, one for connection to the segment 120 and the other for connection to the first electrode 500 or the second electrode 600.
In the novel brush motor, the carbon brush holder 310 is provided with a plurality of carbon brush sleeves 320, the second mounting groove 322 of one carbon brush sleeve 320 of two adjacent carbon brush sleeves 320 is provided with a carbon brush, and the third mounting groove 323 of the other carbon brush sleeve 320 is provided with a carbon brush.
In the novel brush motor, the first electrode 500 and the second electrode 600 are disposed inside the casing 400, and the carbon brush holder 320 is provided with a first mounting groove 321 facing the segment 120, a second mounting groove 322 facing the first electrode 500, and a third mounting groove 323 facing the second electrode 600.
Unlike the above-described embodiment in which the first electrode 500 and the second electrode 600 are disposed on the inner wall of the middle ring 111, the first electrode 500 and the second electrode 600 are disposed inside the casing 400 in the present embodiment.
Referring to fig. 1 to 3, in the novel brush motor, the casing 400 includes a middle housing 410 sleeved on the stator assembly 100, and an upper end cover 420 and a lower end cover 430 respectively disposed at two ends of the middle housing 410, the upper end cover 420 and the lower end cover 430 are both provided with bearing seats, and bearings for the rotating shaft 220 to penetrate through are disposed inside the bearing seats.
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.
Claims (10)
1. A novel brush motor, its characterized in that includes:
the stator assembly comprises a stator core and a stator winding wound on the stator core, and the stator core is also provided with a commutator bar electrically connected with the stator winding;
the rotor assembly is positioned inside the stator core and comprises a rotor core, a rotating shaft penetrating through the rotor core and magnetic steel arranged on the rotor core;
the carbon brush assembly is arranged on the rotor assembly and is in contact with the commutator segment;
a casing, the stator assembly being mounted on the casing.
2. The novel brush motor according to claim 1, wherein the carbon brush assembly includes a carbon brush holder fixed to the rotor core or the rotating shaft, a carbon brush sleeve disposed on the carbon brush holder, and a carbon brush disposed inside the carbon brush sleeve, and an opening of the carbon brush sleeve faces the commutator segment.
3. The novel brush motor according to claim 2, wherein the carbon brush holder is fixed to the rotating shaft, a first through hole for the rotating shaft to penetrate through is formed in the middle of the carbon brush holder, and the carbon brush holder is tightly matched and connected with the rotating shaft through the first through hole.
4. The novel brushed electric motor of claim 2 wherein the carbon brush holder is provided with a mounting block for mounting the carbon brush sleeve, the carbon brush sleeve being mounted on the mounting block.
5. The novel brush motor as claimed in claim 2, wherein the stator core includes a middle ring and stator teeth disposed outside the middle ring, a stator slot is formed between two adjacent stator teeth, and the commutator segment is disposed on the middle ring.
6. The novel brush motor according to claim 5, wherein the inner wall of the middle ring is provided with a first electrode and a second electrode, and the carbon brush sleeve is provided with a first mounting groove facing the commutator segment, a second mounting groove facing the first electrode, and a third mounting groove facing the second electrode.
7. The novel brushed electric motor of claim 6 wherein the first mounting groove is provided with the carbon brush and the second mounting groove or the third mounting groove is provided with the carbon brush.
8. The novel brush motor as claimed in claim 7, wherein a plurality of carbon brush sleeves are disposed on the carbon brush support, the carbon brush is disposed in the second mounting groove of one of two adjacent carbon brush sleeves, and the carbon brush is disposed in the third mounting groove of the other carbon brush sleeve.
9. The novel brush motor as claimed in claim 2, wherein a first electrode and a second electrode are disposed inside the casing, and the carbon brush sleeve is disposed with a first mounting groove facing the commutator segment, a second mounting groove facing the first electrode, and a third mounting groove facing the second electrode, respectively.
10. The novel brush motor as claimed in claim 1, wherein the casing includes a middle housing sleeved on the stator assembly, and an upper end cover and a lower end cover respectively disposed at two ends of the middle housing, the upper end cover and the lower end cover are both provided with bearing seats, and bearings for the rotation shaft to penetrate are disposed inside the bearing seats.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122576417.0U CN216134392U (en) | 2021-10-25 | 2021-10-25 | Novel brush motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122576417.0U CN216134392U (en) | 2021-10-25 | 2021-10-25 | Novel brush motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216134392U true CN216134392U (en) | 2022-03-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122576417.0U Active CN216134392U (en) | 2021-10-25 | 2021-10-25 | Novel brush motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216134392U (en) |
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2021
- 2021-10-25 CN CN202122576417.0U patent/CN216134392U/en active Active
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