CN220139378U - Commutator heat radiation structure - Google Patents
Commutator heat radiation structure Download PDFInfo
- Publication number
- CN220139378U CN220139378U CN202320882161.2U CN202320882161U CN220139378U CN 220139378 U CN220139378 U CN 220139378U CN 202320882161 U CN202320882161 U CN 202320882161U CN 220139378 U CN220139378 U CN 220139378U
- Authority
- CN
- China
- Prior art keywords
- commutator
- heat dissipation
- limiting plate
- support
- dissipation structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000005855 radiation Effects 0.000 title claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910052802 copper Inorganic materials 0.000 claims abstract description 35
- 239000010949 copper Substances 0.000 claims abstract description 35
- 230000017525 heat dissipation Effects 0.000 claims abstract description 16
- 238000003466 welding Methods 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004804 winding Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- Motor Or Generator Frames (AREA)
Abstract
The utility model discloses a heat dissipation structure of a commutator, which comprises a circular commutator support and a circular limiting plate, wherein N circular arc-shaped commutator copper sheets are inlaid and installed on the outer side surface of the commutator support, welding wire hooks which are bent towards the centrifugal direction are arranged at the top ends of the commutator copper sheets, and heat dissipation fins which extend downwards are arranged at the bottom ends of the commutator copper sheets; the limiting plate is installed at the bottom end of the commutator support through insulating screws, N circular arc-shaped limiting holes are formed in the limiting plate, and each limiting hole is sleeved on one radiating fin. The beneficial effects are that: the heat radiating fins extending downwards are arranged at the bottom end of the copper sheet of the commutator, so that the heat radiating area of the copper sheet of the commutator is increased, and on the other hand, when the commutator rotates, the heat radiating fins disturb surrounding air, the air flow speed around the commutator is improved, and the heat radiating effect of the commutator is further improved.
Description
Technical Field
The utility model relates to the field of commutators, in particular to a heat dissipation structure of a commutator.
Background
Commutators are an important component of dc and ac commutator motor armatures. The main structure is that a plurality of commutator copper sheets are arranged on a commutator support, each commutator copper sheet is connected with a plurality of armature winding elements, and when the armature rotates, the commutator copper sheets are sequentially contacted with a fixed electric brush. In a direct current motor, alternating current in an armature winding is changed into direct current between brushes through brushes and a commutator; in an AC commutator motor, the frequency of AC power between brushes is made to meet the operating requirements.
The commutator can generate a large amount of heat due to friction between the brush and the surface of the commutator during operation, and partial heat can be generated when the commutator copper sheet is electrified, so that the heat can be dissipated only through the outer surface of the commutator copper sheet, the heat dissipation area is small, the flowing speed of air flow is low, and the heat dissipation effect is poor.
Disclosure of Invention
The utility model aims to overcome the problems in the prior art and provide a heat dissipation structure of a commutator.
In order to achieve the technical purpose and the technical effect, the utility model is realized by the following technical scheme:
the utility model provides a commutator heat radiation structure, includes annular commutator support, annular limiting plate, inlay on the lateral surface of commutator support and install the convex commutator copper sheet of N pieces, the top of commutator copper sheet is equipped with the bonding wire crotch that bends to centrifugal direction, the bottom of commutator copper sheet is equipped with the radiating fin of downwardly extending; the limiting plate is installed at the bottom end of the commutator support through insulating screws, N circular arc-shaped limiting holes are formed in the limiting plate, and each limiting hole is sleeved on one radiating fin.
Wherein, the centripetal side of the commutator copper sheet is fixedly connected with a plurality of fixing feet which are uniformly distributed from top to bottom in a shape of a Chinese character 'tu'.
Further, the lower parts of the radiating fins are twisted by 5-15 degrees.
Wherein, the bottom of fin is less than the bottom of limiting plate.
The beneficial effects of the utility model are as follows: the heat radiating fins extending downwards are arranged at the bottom end of the copper sheet of the commutator, so that the heat radiating area of the copper sheet of the commutator is increased, and on the other hand, when the commutator rotates, the heat radiating fins disturb surrounding air, the air flow speed around the commutator is improved, and the heat radiating effect of the commutator is further improved.
Drawings
The accompanying drawings, which 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 description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:
fig. 1 is a schematic perspective view of a first view angle of a commutator according to a first embodiment of the present utility model;
fig. 2 is a schematic perspective view of a second view angle of the commutator according to the first embodiment of the utility model;
FIG. 3 is a schematic view of a limiting plate according to an embodiment of the present utility model;
fig. 4 is a schematic structural view of a copper sheet of the commutator in accordance with the first embodiment of the present utility model.
The reference numerals in the figures illustrate: the commutator comprises a commutator support 1, a limiting plate 2, a commutator copper sheet 3, a welding wire hook 4, a radiating fin 5, an insulating screw 6, a limiting hole 7, a fixing foot 8 and a bent hook part 9.
Description of the embodiments
The utility model will be described in detail below with reference to the drawings in combination with embodiments.
As shown in fig. 1 to 4, in an embodiment one, a heat dissipation structure for a commutator includes a circular commutator support 1 and a circular limiting plate 2, both of which are made of insulating materials, and the limiting plate 2 is mounted at the bottom end of the commutator support 1 by an insulating screw 6.
24 circular arc commutator copper sheets 3 are inlaid and installed on the outer side face of the commutator support 1, welding wire hooks 4 bent towards the centrifugal direction are arranged at the top ends of the commutator copper sheets 3, radiating fins 5 extending downwards are arranged at the bottom ends of the commutator copper sheets 3, 24 circular arc limiting holes 7 are formed in the limiting plate 2, each limiting hole 7 is sleeved on one radiating fin 5, and the bottom ends of the radiating fins 5 are lower than the bottom ends of the limiting plate 2.
The heat radiating fins extending downwards are arranged at the bottom end of the copper sheet of the commutator, so that the heat radiating area of the copper sheet of the commutator is increased, and on the other hand, when the commutator rotates, the heat radiating fins disturb surrounding air, the air flow speed around the commutator is improved, and the heat radiating effect of the commutator is further improved.
The centripetal side of the commutator copper sheet 3 is fixedly connected with a plurality of fixing feet 8 which are uniformly distributed from top to bottom and are shaped like a Chinese character 'tu', and the centripetal ends of the fixing feet 8 are bent leftwards or rightwards to form a bent hook part 9. The left side surface and the right side surface of the commutator copper sheet 3 are parallel to each other, so that the connection firmness between the commutator copper sheet 3 and the commutator support 1 is improved.
The inner diameter of the limiting plate 2 is larger than that of the commutator support 1, and the outer diameter of the limiting plate 2 is equal to that of the commutator support 1.
The horizontal distance between the outer side surface of the radiating fin 5 and the outer side surface of the commutator copper sheet 3 is twice the thickness of the commutator copper sheet 3, so that the width of the limiting plate 2 at the outer side of the radiating fin 5 is ensured, and the limiting plate is prevented from being collapsed when rotating at high speed due to the fact that the width of the limiting plate at the outer side of the radiating fin 5 is too narrow.
The second embodiment is different from the first embodiment in that the lower portion of the heat dissipation fin 5 is twisted by 5-15 degrees, so that the disturbance effect of the heat dissipation fin on the air around the commutator is improved, and the air flow speed around the commutator is further improved.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.
Claims (8)
1. A commutator heat radiation structure is characterized in that: the novel commutator comprises a circular commutator support and a circular limiting plate, wherein N circular arc commutator copper sheets are inlaid on the outer side face of the commutator support, welding wire hooks which are bent towards the centrifugal direction are arranged at the top ends of the commutator copper sheets, and radiating fins which extend downwards are arranged at the bottom ends of the commutator copper sheets; the limiting plate is installed at the bottom end of the commutator support through insulating screws, N circular arc-shaped limiting holes are formed in the limiting plate, and each limiting hole is sleeved on one radiating fin.
2. The commutator heat dissipation structure as defined in claim 1, wherein: the centripetal side of the commutator copper sheet is fixedly connected with a plurality of convex fixing feet which are uniformly distributed from top to bottom.
3. The commutator heat dissipation structure as defined in claim 2, wherein: the centripetal end of the fixed leg is bent leftwards or rightwards to form a bent hook part.
4. The commutator heat dissipation structure as defined in claim 1, wherein: the left side surface and the right side surface of the commutator copper sheet are parallel to each other.
5. The commutator heat dissipation structure as defined in claim 1, wherein: the internal diameter of limiting plate is greater than the internal diameter of commutator support, the external diameter of limiting plate equals the external diameter of commutator support.
6. The commutator heat dissipation structure as defined in claim 1, wherein: the lower parts of the radiating fins are twisted by 5-15 degrees.
7. The commutator heat dissipation structure as defined in claim 1, wherein: the bottom ends of the radiating fins are lower than the bottom ends of the limiting plates.
8. The commutator heat dissipation structure as defined in claim 1, wherein: the horizontal distance between the outer side surface of the radiating fin and the outer side surface of the commutator copper sheet is twice the thickness of the commutator copper sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320882161.2U CN220139378U (en) | 2023-04-19 | 2023-04-19 | Commutator heat radiation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320882161.2U CN220139378U (en) | 2023-04-19 | 2023-04-19 | Commutator heat radiation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220139378U true CN220139378U (en) | 2023-12-05 |
Family
ID=88949904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320882161.2U Active CN220139378U (en) | 2023-04-19 | 2023-04-19 | Commutator heat radiation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220139378U (en) |
-
2023
- 2023-04-19 CN CN202320882161.2U patent/CN220139378U/en active Active
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