CN211508729U - Direct current brushless motor iron core structure of automobile cooling fan - Google Patents
Direct current brushless motor iron core structure of automobile cooling fan Download PDFInfo
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- CN211508729U CN211508729U CN201922289991.0U CN201922289991U CN211508729U CN 211508729 U CN211508729 U CN 211508729U CN 201922289991 U CN201922289991 U CN 201922289991U CN 211508729 U CN211508729 U CN 211508729U
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Abstract
The utility model discloses a brushless DC motor core structure of car cooling fan, including stator core, rotor core, stator core is for folding and pressing the multi-disc stator towards the piece and constitute, rotor core is for folding and pressing the multi-disc rotor towards the piece and constitute, each stator is towards the piece and is annular sheet structure, and interval distribution such as annular border has a plurality of stator winding groove, be provided with the stator toothholder between the adjacent stator winding groove, each rotor is towards the piece and is annular sheet structure, and the middle part sets up the rotor mounting hole, interval distribution such as annular border of rotor towards the piece has magnet installation open slot, be provided with rotor crack hole on the rotor punching of adjacent magnet installation open slot, be provided with the fixed contact pin groove of magnet on the cell wall of magnet installation open slot, the inboard of magnet installation open slot is provided with magnet location magnetic conduction strengthening rib. The utility model discloses optimize the characteristic of motor groove fullness rate, efficiency, noise, novel structure constructs ingeniously, has good application prospect.
Description
Technical Field
The utility model relates to an automobile cooling fan spare part technical field, concretely relates to automobile cooling fan's direct current brushless motor iron core structure.
Background
At present, a direct current brushless motor is widely applied to an automobile cooling fan as a matching power due to the characteristics of low energy consumption, long service life, low noise and high efficiency.
With the enhancement of social environmental protection consciousness and safety consciousness, the requirements on energy consumption, service life and noise of an automobile cooling fan are continuously improved, and the motor is used as a power device of the cooling fan, so that the requirements on energy consumption reduction, efficiency increase, noise reduction and service life prolongation of the motor are required, a direct current brush motor used in the past is gradually eliminated, and the direct current brushless motor becomes the main trend of the automobile electronic cooling fan.
However, the conventional dc brushless motor has a high ferromagnetic loss. Moreover, when the temperature of the dc brushless motor is increased during operation, the service life of the dc brushless motor is shortened, the energy consumption is increased, and how to overcome the above problems is currently required to be solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming current DC brushless motor, ferromagnetic loss is higher, is not convenient for be applied to the problem as supporting power on the car cooling fan. The utility model discloses a brushless DC motor core structure of car cooling fan has optimized the phenomenon that the magnetic density that arouses because the root of tooth is too thin narrow and the too saturated iron loss is too high, under the condition that is not higher than current general motor material, has optimized the characteristic of motor groove fullness rate, efficiency, noise, novel structure, and the structure is ingenious, has good application prospect.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a DC brushless motor iron core structure of automobile cooling fan comprises a stator iron core and a rotor iron core,
the stator core is formed by laminating a plurality of stator punching sheets, the rotor core is formed by laminating a plurality of rotor punching sheets,
each stator punching sheet is of an annular sheet structure, a plurality of stator winding slots are distributed on the annular periphery at equal intervals, a stator tooth handle is arranged between every two adjacent stator winding slots, the stator tooth handle is positioned on the annular inner edge of the stator punching sheet, the annular outer edge of each stator punching sheet is provided with a winding positioning slot,
each rotor punching sheet is of an annular sheet structure, the middle part of each rotor punching sheet is provided with a rotor mounting hole, the annular periphery of each rotor punching sheet is distributed with magnet mounting open slots at equal intervals, the rotor punching sheets of the adjacent magnet mounting open slots are provided with rotor crack holes, the slot walls of the magnet mounting open slots are provided with magnet fixing pin slots, the inner sides of the magnet mounting open slots are provided with magnet positioning magnetic conduction reinforcing ribs,
the thicknesses of the stator core and the rotor core are the same and are both between 13 and 25 mm.
In the core structure of the brushless direct current motor of the automobile cooling fan, the outer diameter of the stator punching sheet is between 104 and 110mm, and the inner diameter of the stator punching sheet is between 64.6mm and 70.6 mm.
In the iron core structure of the brushless direct current motor of the automobile cooling fan, the height of the stator tooth handle is 13.65-20mm, the stator tooth handle comprises a tooth handle part and a tooth shoe part, the width of the tooth handle part is 6.5-8.5mm, and the large end of the tooth handle part is positioned on the outer side of the stator punching sheet; the distance between adjacent tooth boots is 3.4mm, and the included angle between the tooth handle part and the tooth boots is 105-110 degrees.
In the iron core structure of the brushless direct current motor of the automobile cooling fan, the outer diameter of the rotor punching sheet is 63.6mm-69.6mm, the aperture of the rotor crack hole is 3-3.5mm, the pipeline at the opening of the magnet installation open slot is 11mm, and the distance between the inner sides of the connected magnet installation open slots is 1 mm.
In the iron core structure of the brushless direct current motor of the automobile cooling fan, the number of the magnet installation open slots is 8.
In the iron core structure of the brushless direct current motor of the automobile cooling fan, the stator winding slot is the concave yoke part, the concave yoke part is formed by three sections of straight lines, and the bending part is in arc transition.
The utility model has the advantages that: the utility model discloses a direct current brushless motor iron core structure of car cooling fan, stator winding groove are concave yoke portion, and concave yoke portion is three-section straight line and constitutes, and the department of buckling is the circular arc transition, has increased the groove area and also has let coiling machine line mouth more efficient wiring simultaneously; the inboard of the magnet installation open slot of rotor is provided with magnet location magnetic conduction strengthening rib, structural strength has been increased, the vibrations that torque and radial harmonic arouse when having reduced by the motor operation, and magnet (magnetic shoe) installation is accomplished the back more accurate dynamic balance volume littleer, simultaneously divide the magnetic density to lead, the phenomenon that the magnetic density too saturates the iron loss height that has optimized because the root of tooth is too thin and arouses, under the condition that is not higher than current general motor material, the motor groove fullness rate has been optimized, efficiency, the characteristic of noise, novel structure, it is ingenious to construct, good application prospect has.
Drawings
Fig. 1 is a schematic structural diagram of a stator punching sheet of the present invention;
fig. 2 is a schematic structural diagram of a rotor sheet of the present invention;
fig. 3 is a schematic structural view of a stator core according to the present invention;
fig. 4 is a schematic structural view of a rotor core according to the present invention.
The designations in the drawings have the following meanings:
1: a stator core; 2: a rotor core; 3: stator punching sheets; 4: rotor punching sheets; 5: a stator winding slot; 6: a stator tooth shank; 7: a winding positioning groove; 8: a rotor mounting hole; 9: the magnet is provided with an open slot; 10: rotor slot holes; 11: the magnet fixes the pin slot; 12: magnet location magnetic conduction strengthening rib.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1-4, the dc brushless motor core structure of the cooling fan for automobile of the present invention comprises a stator core 1, a rotor core 2,
the stator core 1 is formed by laminating a plurality of stator punching sheets 3, the rotor core 2 is formed by laminating a plurality of rotor punching sheets 4, the laminated structure can reduce the magnetic density of the motor core and the iron loss of the motor,
each stator lamination 3 is of an annular sheet structure, a plurality of stator winding slots 5 are distributed on the annular periphery at equal intervals, a stator tooth handle 6 is arranged between every two adjacent stator winding slots 5, the stator tooth handle 6 is positioned at the annular inner edge of the stator lamination 3, the annular outer edge of each stator lamination 3 is provided with a winding positioning slot 7, the winding positioning slot 7 is used for positioning winding,
each rotor punching sheet 4 is of an annular sheet structure, the middle part of each rotor punching sheet is provided with a rotor mounting hole 8, the annular periphery of each rotor punching sheet 4 is distributed with magnet mounting open slots 9 at equal intervals, the rotor punching sheets 4 of the adjacent magnet mounting open slots 9 are provided with rotor crack holes 10, the slot wall of each magnet mounting open slot 9 is provided with a magnet fixing insertion needle slot 11, the inner side of each magnet mounting open slot 9 is provided with a magnet positioning magnetic conduction reinforcing rib 12 to increase the structural strength of the magnet mounting open slot 9,
the thicknesses of the stator core 1 and the rotor core 2 are the same and are both between 13 and 25 mm.
Preferably, the outer diameter of the stator punching sheet 3 is between 104 and 110mm, the inner diameter is between 64.6mm and 70.6mm, the height of the stator tooth shank 6 is between 13.65 and 20mm, the stator tooth shank 6 comprises a tooth shank part and a tooth shoe part, the width of the tooth shank part is between 6.5 and 8.5mm, and the large end is positioned at the outer side of the stator punching sheet 3; the distance between the adjacent tooth shoe parts is 3.4mm, the included angle between the tooth handle part and the tooth shoe parts is 105-110 degrees, and the selection of the size can facilitate the processing and forming of the stator punching sheet 3 and the batch production; moreover, the stator winding slot 5 is a concave yoke part which is formed by three sections of straight lines, and the bending part is in arc transition, so that on one hand, the area of the stator winding slot 5 is increased, and the stator winding slot can be wound by more turns under the condition of the same slot filling rate, thereby achieving the aim of improving the power and the efficiency of the brushless motor by the same volume; on the other hand, under the prior art, the winding wire nozzle is blocked by the arc shape of the groove bottom, so that the winding at the root part of the stator tooth is difficult, and the adoption of the concave three-section groove bottom can effectively improve; finally, the effect of weight reduction can be achieved to a certain extent, and the increasingly improved light weight requirement of the whole vehicle is met.
Preferably, the outer diameter of the rotor sheet 4 is 63.6mm-69.6mm, the aperture of the rotor crack hole 10 is 3-3.5mm, the pipeline at the opening of the magnet installation open slot 9 is 11mm, the distance between the inner sides of the connected magnet installation open slots 9 is 1mm, the number of the magnet installation open slots 9 is 8, and the size is selected to facilitate the processing and forming of the rotor sheet 4 and facilitate the batch production.
The utility model discloses a brushless DC motor core structure of car cooling fan, the design of 4 fastnesses of rotor punching can be more accurate dynamic balance volume littleer, and the noise reduction, and magnet (magnetic shoe) wearing and tearing are few, and it is little to heat up, is favorable to the brushless DC motor life of extension, is applicable to car cooling fan's use.
To sum up, the stator winding slot of the dc brushless motor core structure of the automotive cooling fan of the present invention is a concave yoke, the concave yoke is formed by three straight lines, and the bending point is in arc transition, which increases the slot area and also makes the wire nozzle of the winding machine more efficiently wire; the inboard of the magnet installation open slot of rotor is provided with magnet location magnetic conduction strengthening rib, structural strength has been increased, the vibrations that torque and radial harmonic arouse when having reduced by the motor operation, and magnet (magnetic shoe) installation is accomplished the back more accurate dynamic balance volume littleer, simultaneously divide the magnetic density to lead, the phenomenon that the magnetic density too saturates the iron loss height that has optimized because the root of tooth is too thin and arouses, under the condition that is not higher than current general motor material, the motor groove fullness rate has been optimized, efficiency, the characteristic of noise, novel structure, it is ingenious to construct, good application prospect has.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a brushless DC motor core structure of car cooling fan, includes stator core (1), rotor core (2), its characterized in that:
the stator core (1) is formed by laminating a plurality of stator punching sheets (3), the rotor core (2) is formed by laminating a plurality of rotor punching sheets (4),
each stator punching sheet (3) is of an annular sheet structure, a plurality of stator winding slots (5) are distributed on the annular periphery at equal intervals, a stator tooth handle (6) is arranged between every two adjacent stator winding slots (5), the stator tooth handle (6) is positioned on the annular inner edge of each stator punching sheet (3), a winding positioning slot (7) is arranged on the annular outer edge of each stator punching sheet (3),
each rotor punching sheet (4) is of an annular sheet structure, the middle part of each rotor punching sheet is provided with a rotor mounting hole (8), the annular periphery of each rotor punching sheet (4) is provided with magnet mounting open slots (9) at equal intervals, rotor crack holes (10) are arranged on the rotor punching sheets (4) of the adjacent magnet mounting open slots (9), the slot wall of each magnet mounting open slot (9) is provided with a magnet fixing pin slot (11), the inner side of each magnet mounting open slot (9) is provided with a magnet positioning magnetic conduction reinforcing rib (12),
the thicknesses of the stator core (1) and the rotor core (2) are the same and are both between 13 and 25 mm.
2. The dc brushless motor core structure of the car cooling fan according to claim 1, wherein: the outer diameter of the stator punching sheet (3) is between 104 and 110mm, and the inner diameter of the stator punching sheet is between 64.6mm and 70.6 mm.
3. The dc brushless motor core structure of the car cooling fan according to claim 2, wherein: the height of the stator tooth handle (6) is 13.65-20mm, the stator tooth handle (6) comprises a tooth handle part and a tooth shoe part, the width of the tooth handle part is 6.5-8.5mm, and the large end of the tooth handle part is positioned on the outer side of the stator punching sheet (3); the distance between adjacent tooth boots is 3.4mm, and the included angle between the tooth handle part and the tooth boots is 105-110 degrees.
4. The dc brushless motor core structure of the car cooling fan according to claim 1, wherein: the outer diameter of the rotor punching sheet (4) is 63.6mm-69.6mm, the aperture of the rotor crack hole (10) is 3-3.5mm, the pipeline at the opening of the magnet installation open slot (9) is 11mm, and the distance between the inner sides of the connected magnet installation open slots (9) is 1 mm.
5. The dc brushless motor core structure of the car cooling fan according to claim 1, wherein: the number of the magnet installation open grooves (9) is 8.
6. The dc brushless motor core structure of the car cooling fan according to claim 1, wherein: the stator winding slot (5) is a concave yoke part, the concave yoke part is formed by three sections of straight lines, and the bending part is in arc transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922289991.0U CN211508729U (en) | 2019-12-19 | 2019-12-19 | Direct current brushless motor iron core structure of automobile cooling fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922289991.0U CN211508729U (en) | 2019-12-19 | 2019-12-19 | Direct current brushless motor iron core structure of automobile cooling fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211508729U true CN211508729U (en) | 2020-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922289991.0U Active CN211508729U (en) | 2019-12-19 | 2019-12-19 | Direct current brushless motor iron core structure of automobile cooling fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211508729U (en) |
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2019
- 2019-12-19 CN CN201922289991.0U patent/CN211508729U/en active Active
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