CN221552989U - DC brush micro-motor with noise reduction structure - Google Patents
DC brush micro-motor with noise reduction structure Download PDFInfo
- Publication number
- CN221552989U CN221552989U CN202420012141.4U CN202420012141U CN221552989U CN 221552989 U CN221552989 U CN 221552989U CN 202420012141 U CN202420012141 U CN 202420012141U CN 221552989 U CN221552989 U CN 221552989U
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- Prior art keywords
- brush
- motor
- shell
- noise reduction
- reduction structure
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Links
- 238000013016 damping Methods 0.000 claims abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 56
- 229910052799 carbon Inorganic materials 0.000 claims description 56
- 238000001125 extrusion Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical compound [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Dc Machiner (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The utility model relates to the field of miniature brush motors, in particular to a direct-current brush micro motor with a noise reduction structure, which comprises a motor shell, wherein a rotor is arranged in the motor shell, permanent magnets are symmetrically arranged on two sides of the rotor and are arranged on the inner side wall of the motor shell, a main shaft is arranged in the middle of the rotor, and a commutator is arranged at the bottom end of the main shaft; the direct-current brushed micro motor with the noise reduction structure can effectively absorb vibration through the damping strips attached to the brush arms, so that vibration and noise of the brush arms are restrained, in addition, the motor can be quickly disassembled through the quick clamping mechanism, so that the position of the brush arms can be adjusted, and the degree of matching between the brush arms and the commutator can be adjusted.
Description
Technical Field
The utility model relates to the field of miniature brush motors, in particular to a direct-current brush micro motor with a noise reduction structure.
Background
The miniature brush motor is a motor with carbon brushes and a commutator device, current is introduced by the carbon brushes, the carbon brushes are contacted with the commutator and are in continuous sliding friction with each other, the carbon brushes are arranged on a brush arm and have certain pressure on the carbon brushes, so that certain pressure is ensured between the carbon brushes and the commutator, when a motor rotor rotates (carbon is fixed and the commutator rotates), the carbon is coined on the surface of the commutator, the commutator continuously rotates, and the carbon is slightly jumped on the surface of the commutator due to certain roughness and roundness of the surface of the commutator, so that the brush arm vibrates (the brush arm is made of beryllium copper and has the thickness of 0.1 mm), and noise is generated by the brush arm, which is a main reason for noise of the brush motor.
Therefore, it is necessary to provide a new dc brush micro-motor with noise reduction structure to solve the above technical problems.
Disclosure of utility model
In order to solve the technical problems, the utility model provides a direct current brush micro motor with a noise reduction structure.
The utility model provides a DC brush micro motor with noise reduction structure, comprising:
The motor comprises a motor shell, wherein a rotor is arranged in the motor shell, permanent magnets are symmetrically arranged on two sides of the rotor, the permanent magnets are arranged on the inner side wall of the motor shell, a main shaft is arranged in the middle of the rotor, and a commutator is arranged at the bottom end of the main shaft;
The bottom shell is arranged at the bottom end of the motor shell, one side of the bottom shell is symmetrically and fixedly provided with a mounting seat, the mounting seat is clamped with a brush arm, one end of the brush arm penetrates through a side wall arm of the bottom shell, one end, far away from the mounting seat, of the brush arm is provided with a brush carbon, the brush carbon is in extrusion contact with the commutator, and one side of the brush arm is provided with a damping strip;
The mounting blocks are symmetrically mounted at the inner parts of the two ends of the bottom shell, clamping blocks are slidably connected in the mounting blocks, limiting springs are symmetrically mounted on one sides of the clamping blocks, and the limiting springs are arranged in the mounting blocks.
Preferably, the top end of the bottom shell is provided with a matching ring which is in plug-in matching with the bottom end of the motor shell.
Preferably, the brush arms are arranged in an L shape.
Preferably, the end part of the brush carbon, which is close to the commutator, is provided with an arc surface which is mutually attached to the commutator.
Preferably, the damping strip is made of rubber material.
Preferably, one side of the clamping block is symmetrically provided with mounting holes matched with the limiting springs in a mounting mode, and the limiting springs are symmetrically arranged in the two mounting blocks in opposite directions.
Preferably, a clamping groove matched with the motor shell in a clamping way is formed in one end of the clamping block, and an anti-skid groove is formed in the other end of the clamping block.
Preferably, one end of the motor shell and one end of the bottom shell are respectively provided with a lug matched with the main shaft in a rotating way.
Compared with the related art, the direct-current brush micro motor with the noise reduction structure has the following beneficial effects:
The permanent magnet is installed firstly by staff, afterwards, assemble rotor and main shaft, after the completion of the equipment, peg graft the assembly in the inside of motor housing, afterwards, peg graft the drain pan in the bottom of motor housing, and when peg graft in the drain pan, dial the tip of two brush arms, make two brush carbon symmetric distributions in the both sides of commutator, afterwards, install the drain pan, and the brush arm is under the condition that does not have the restriction, drive brush carbon closely laminating at the surface of commutator, afterwards, when motor operation, the damping strip on the brush arm can restrain the vibration that brush carbon produced when operation, reduce the noise of motor when operation, and after motor operation for a long time, need in time adjust the position of brush arm and brush carbon, make brush carbon adhere to the outer lane at the commutator all the time, the staff can press down the fixture block of drain pan both sides, make two fixture blocks carry out the opposite direction removal, compress limiting spring, motor housing and drain pan are under the restriction of no fixture block, can separate motor housing and drain pan, thereby can carry out the brush with brush carbon and the surface, the vibration that makes progress the brush carbon, the motor has the vibration that makes a little brush carbon and the brush carbon can take down, the brush carbon down the vibration of the brush arm, can be adjusted through the brush carbon, the brush carbon can be adjusted, the brush carbon can be directly attached to the brush carbon, the brush can be adjusted to the brush carbon, the brush can be adjusted, the vibration can be adjusted, the brush carbon can be adjusted, the brush can has the brush carbon, and has the brush, the brush can has the brush, and has the brush, the brush can and has the brush, and has the brush.
Drawings
FIG. 1 is a schematic diagram of a DC brushed micro-motor with noise reduction structure according to the present utility model;
FIG. 2 is a schematic diagram of a DC brushed micro-motor with noise reduction structure according to the second embodiment of the present utility model;
FIG. 3 is a schematic view of the overall semi-section shown in FIG. 1;
Fig. 4 is a schematic structural view of the bottom chassis shown in fig. 1;
FIG. 5 is a schematic view of the structure of the brush arm shown in FIG. 1;
Fig. 6 is a schematic view of the bottom chassis shown in fig. 1 in half-section.
Reference numerals in the drawings: 1. a motor housing; 2. a rotor; 3. a permanent magnet; 4. a main shaft; 5. a commutator; 6. a bottom case; 7. a mounting base; 8. a brush arm; 9. brushing carbon; 10. damping strips; 11. a mounting block; 12. a clamping block; 13. limiting the spring.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Specific implementations of the utility model are described in detail below in connection with specific embodiments.
Referring to fig. 1 to 6, a dc brushed micro-motor with noise reduction structure according to an embodiment of the present utility model includes: the motor comprises a motor shell 1, wherein a rotor 2 is arranged in the motor shell 1, permanent magnets 3 are symmetrically arranged on two sides of the rotor 2, the permanent magnets 3 are arranged on the inner side wall of the motor shell 1, a main shaft 4 is arranged in the middle of the rotor 2, and a commutator 5 is arranged at the bottom end of the main shaft 4;
The bottom shell 6 is arranged at the bottom end of the motor shell 1, one side of the bottom shell 6 is symmetrically and fixedly provided with a mounting seat 7, a brush arm 8 is clamped on the mounting seat 7, one end of the brush arm 8 penetrates through a side wall arm of the bottom shell 6, one end of the brush arm 8, far away from the mounting seat 7, is provided with a brush carbon 9, the brush carbon 9 is in extrusion contact with the commutator 5, and one side of the brush arm 8 is provided with a damping strip 10;
The installation piece 11, two installation pieces 11 symmetry install inside the both ends of drain pan 6, and the inside of installation piece 11 is all sliding connection has fixture block 12, and limit spring 13 is installed to one side symmetry of fixture block 12, and limit spring 13 sets up in the inside of installation piece 11.
It should be noted that: when the motor is assembled, at this moment, the permanent magnet 3 is firstly installed by the staff, afterwards, the rotor 2 and the main shaft 4 are assembled, after the assembly is completed, the assembly is inserted into the motor shell 1, then, the bottom shell 6 is inserted into the bottom of the motor shell 1, and when the bottom shell 6 is inserted, the ends of the two brush arms 8 are pulled out, so that the two brush carbon 9 are symmetrically distributed on the two sides of the commutator 5, afterwards, the bottom shell 6 is installed, the brush arms 8 are used for driving the brush carbon 9 to be tightly attached to the surface of the commutator 5 under the condition that the limitation is not carried out, then, vibration generated when the brush carbon 9 is operated is restrained by the damping strip 10 on the brush arms 8, noise generated when the motor is reduced, after the motor is operated for a long time, the positions of the brush arms 8 and the brush carbon 9 are required to be adjusted in time, the brush carbon 9 is always attached to the outer ring of the commutator 5, the clamping blocks 12 on the two sides of the bottom shell 6 can be pressed by the staff, so that the two clamping blocks 12 move in opposite directions, the motor is limited, the motor shell 13 and the bottom shell 6 can be separated from the brush carbon 9 under the condition that the motor is limited by the compression of the spring 13 and the brush carbon 9 is not limited by the bottom shell 6, and the brush carbon 9 can be separated from the bottom shell 6.
In the embodiment of the present utility model, referring to fig. 1 to 6, a mating ring is disposed at the top end of the bottom shell 6 and is mated with the bottom end of the motor housing 1 in a plugging manner;
it should be noted that: the matching ring at the top end of the bottom shell 6 can increase the installation matching degree between the motor shell 1 and the bottom shell 6;
in the embodiment of the present utility model, referring to fig. 1 to 6, the brush arm 8 is disposed in an L-shape;
It should be noted that: the brush carbon 9 can be always pushed to the commutator 5 by the brush arm 8 arranged in the L shape, so that the brush carbon 9 is always attached to the surface of the commutator 5;
In the embodiment of the present utility model, referring to fig. 1 to 6, an end portion of the brush carbon 9, which is close to the commutator 5, is provided with an arc surface mutually attached to the commutator 5;
It should be noted that: the cambered surface at the end part of the brush carbon 9 can increase the fit degree of the brush carbon 9 and the commutator 5;
In the embodiment of the present utility model, referring to fig. 1 to 6, the damping strip 10 is made of rubber;
it should be noted that: the damping strip 10 made of the rubber sheet can effectively absorb vibration, so that vibration and noise of the brush arm 8 are restrained;
In the embodiment of the present utility model, referring to fig. 1 to 6, one side of the clamping block 12 is symmetrically provided with mounting holes for mounting and matching with the limiting springs 13, and the limiting springs 13 are symmetrically arranged inside the two mounting blocks 11 in opposite directions;
It should be noted that: the mounting hole at one side of the clamping block 12 can increase the mounting stability of the limiting spring 13, and the limiting spring 13 arranged at the inner side of the mounting block 11 can push the clamping block 12 to the outer side of the mounting block 11, so that the clamping block 12 is clamped with the motor shell 1;
In the embodiment of the present utility model, referring to fig. 1 to 6, one end of the clamping block 12 is provided with a clamping groove which is mutually clamped and matched with the motor housing 1, and the other end of the clamping block 12 is provided with an anti-skid slot;
It should be noted that: the clamping groove at one end of the clamping block 12 can be clamped with the motor shell 1, so that the connection between the motor shell 1 and the bottom shell 6 is realized, and the friction force between the clamping block 12 and the hands of a worker can be increased due to the arrangement of the protection groove;
In the embodiment of the present utility model, referring to fig. 1 to 6, one end of each of the motor housing 1 and the bottom shell 6 is provided with a protruding block in rotation fit with the spindle 4;
it should be noted that: the arrangement of the protruding blocks at the ends of the motor housing 1 and the bottom shell 6 can increase the rotation connection area between the motor housing 1 and the bottom shell 6 and the main shaft 4, and can increase the rotation stability of the main shaft 4.
The working principle of the utility model is as follows:
When the motor is assembled, at this moment, the permanent magnet 3 is firstly installed by the staff, afterwards, the rotor 2 and the main shaft 4 are assembled, after the assembly is completed, the assembly is inserted into the motor shell 1, then, the bottom shell 6 is inserted into the bottom of the motor shell 1, and when the bottom shell 6 is inserted, the ends of the two brush arms 8 are pulled out, so that the two brush carbon 9 are symmetrically distributed on the two sides of the commutator 5, afterwards, the bottom shell 6 is installed, the brush arms 8 are used for driving the brush carbon 9 to be tightly attached to the surface of the commutator 5 under the condition that the limitation is not carried out, then, vibration generated when the brush carbon 9 is operated is restrained by the damping strip 10 on the brush arms 8, noise generated when the motor is reduced, after the motor is operated for a long time, the positions of the brush arms 8 and the brush carbon 9 are required to be adjusted in time, the brush carbon 9 is always attached to the outer ring of the commutator 5, the clamping blocks 12 on the two sides of the bottom shell 6 can be pressed by the staff, so that the two clamping blocks 12 move in opposite directions, the motor is limited, the motor shell 13 and the bottom shell 6 can be separated from the brush carbon 9 under the condition that the motor is limited by the compression of the spring 13 and the brush carbon 9 is not limited by the bottom shell 6, and the brush carbon 9 can be separated from the bottom shell 6.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.
Claims (8)
1. A dc brushed micro-motor having a noise reduction structure, comprising:
The motor comprises a motor shell (1), wherein a rotor (2) is arranged in the motor shell (1), permanent magnets (3) are symmetrically arranged on two sides of the rotor (2), the permanent magnets (3) are arranged on the inner side wall of the motor shell (1), a main shaft (4) is arranged in the middle of the rotor (2), and a commutator (5) is arranged at the bottom end of the main shaft (4);
The motor comprises a bottom shell (6), wherein the bottom shell (6) is arranged at the bottom end of a motor shell (1), one side of the bottom shell (6) is symmetrically and fixedly provided with a mounting seat (7), a brush arm (8) is clamped on the mounting seat (7), one end of the brush arm (8) penetrates through a side wall arm of the bottom shell (6), one end, far away from the mounting seat (7), of the brush arm (8) is provided with a brush carbon (9), the brush carbon (9) is in extrusion contact with a commutator (5), and one side of the brush arm (8) is provided with a damping strip (10);
the mounting blocks (11), two mounting blocks (11) are symmetrically mounted inside the two ends of the bottom shell (6), clamping blocks (12) are slidably connected inside the mounting blocks (11), limiting springs (13) are symmetrically mounted on one sides of the clamping blocks (12), and the limiting springs (13) are arranged inside the mounting blocks (11).
2. The direct current brush micro motor with the noise reduction structure according to claim 1, wherein the top end of the bottom shell (6) is provided with a matching ring which is in plug-in matching with the bottom end of the motor shell (1).
3. The direct current brushed micro motor with the noise reduction structure according to claim 1, wherein the brush arm (8) is arranged in an L shape.
4. The direct current brushed micro motor with the noise reduction structure according to claim 1, wherein an arc surface which is mutually attached to the commutator (5) is formed at the end part of the brush carbon (9) close to the commutator (5).
5. The direct current brush micro motor with noise reduction structure according to claim 1, wherein the damping strip (10) is made of rubber material.
6. The direct current brush micro motor with the noise reduction structure according to claim 1, wherein one side of the clamping block (12) is symmetrically provided with mounting holes which are in mounting fit with the limiting springs (13), and the limiting springs (13) are symmetrically arranged in the opposite inner parts of the two mounting blocks (11).
7. The direct current brushed micro motor with the noise reduction structure according to claim 1, wherein a clamping groove matched with the motor shell (1) in a clamping way is formed at one end of the clamping block (12), and an anti-skid groove is formed at the other end of the clamping block (12).
8. The direct current brush micro motor with the noise reduction structure according to claim 1, wherein one end of the motor shell (1) and one end of the bottom shell (6) are respectively provided with a protruding block which is in running fit with the main shaft (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420012141.4U CN221552989U (en) | 2024-01-03 | 2024-01-03 | DC brush micro-motor with noise reduction structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420012141.4U CN221552989U (en) | 2024-01-03 | 2024-01-03 | DC brush micro-motor with noise reduction structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221552989U true CN221552989U (en) | 2024-08-16 |
Family
ID=92227184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420012141.4U Active CN221552989U (en) | 2024-01-03 | 2024-01-03 | DC brush micro-motor with noise reduction structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221552989U (en) |
-
2024
- 2024-01-03 CN CN202420012141.4U patent/CN221552989U/en active Active
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