CN217508403U - Brushless direct current motor with in-line expansion type rolling stator core structure - Google Patents
Brushless direct current motor with in-line expansion type rolling stator core structure Download PDFInfo
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- CN217508403U CN217508403U CN202221059274.4U CN202221059274U CN217508403U CN 217508403 U CN217508403 U CN 217508403U CN 202221059274 U CN202221059274 U CN 202221059274U CN 217508403 U CN217508403 U CN 217508403U
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- 238000005096 rolling process Methods 0.000 title abstract description 11
- 238000004804 winding Methods 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims description 6
- 238000001746 injection moulding Methods 0.000 claims description 4
- 238000004806 packaging method and process Methods 0.000 claims 2
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- 239000000741 silica gel Substances 0.000 description 10
- 229910002027 silica gel Inorganic materials 0.000 description 10
- 229910052742 iron Inorganic materials 0.000 description 8
- 238000009434 installation Methods 0.000 description 7
- 230000017525 heat dissipation Effects 0.000 description 6
- 238000005538 encapsulation Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a brushless DC motor with in-line expansion edge rolling stator core structure belongs to motor technical field. The in-line expanded type rounding stator coil assembly comprises an in-line expanded type rounding stator coil assembly, wherein the in-line expanded type rounding stator coil assembly comprises an in-line expanded type stator core, a stator coil and a stator encapsulating bracket, the in-line expanded type stator core comprises a plurality of stator teeth, a stator slot is formed between every two adjacent stator teeth, the stator coil is arranged in the stator slot and consists of a certain number of coil turns wound along the stator teeth, and the stator encapsulating bracket encapsulates the stator core to form an integrated structure which can be expanded, wound, combined and rounded. The utility model has the advantages of, in-line expansion edge rolling stator coil pack can expand and carry out the wire winding, effectively improves stator coil's the full rate in groove, also is convenient for adjust the line diameter size and match reasonable current density according to the motor power level, reduces stator coil's temperature rise, reduces the fault rate of product, promotes the life of product.
Description
Technical Field
The utility model belongs to the technical field of the motor, in particular to brushless DC motor with in-line expansion edge rolling stator core structure.
Background
A small or miniature motor, such as a high-speed permanent magnet brushless DC motor, has a series of advantages of high power density, small geometric dimension, fast dynamic response, high operation efficiency and the like, and has wide application prospects in high-speed operation occasions, such as a high-speed permanent magnet brushless motor used on a hair drier.
Brushless DC motor need form stator coil around enamelled coil on stator core, and stator coil can produce rotating magnetic field through electromagnetic induction, and then drives the rotor and rotate. The stator core of the existing brushless direct current motor is generally designed into a cylindrical structure, a winding bracket is arranged in the stator core for winding, the stator core is generally integrally formed, the stator core can not be split and unfolded, the area in a winding groove is small, the area of a winding space is limited, the groove fullness rate of a stator coil is low, the diameter of an enameled wire which is selected generally is small, the coil current density is large, the loss is large, the temperature rise of the coil is high, and the service life of the motor is short.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, an object of the present invention is to provide a brushless dc motor having an in-line expansion type winding stator core structure, which effectively increases the space area in the winding slot under the same core size, and effectively improves the slot fullness rate of the stator coil.
Another object of the present invention is to provide a brushless dc motor having an in-line expanded round stator core structure, wherein the enameled wire can adjust the wire diameter and match reasonable current density according to the power level of the motor, thereby effectively reducing the temperature rise of the stator coil, reducing the failure rate of the product, and effectively prolonging the service life of the product;
a final object of the present invention is to provide a brushless dc motor having an in-line expanded-type winding stator core structure, which has a stable structure, a good ventilation and heat dissipation efficiency, a low cost, and is convenient to use and popularize.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
the utility model provides a brushless DC motor with in-line expansion edge rolling stator core structure, including in-line expansion edge rolling stator coil assembly, in-line expansion edge rolling stator coil assembly encapsulates the support including in-line expansion stator core, stator coil, stator, in-line expansion stator core forms the stator slot including several stator teeth between the adjacent stator tooth, stator coil sets up at the stator slot and comprises the coil number of turns along stator tooth coiling certain quantity, the stator encapsulates the support and encapsulates the integral type structure that can expand the wire winding and close the edge rolling on stator core.
Furthermore, the in-line expansion stator core further comprises a stator iron yoke, the stator iron yoke and the stator teeth are integrally formed, the edges of the two ends of the stator iron yoke are provided with V-shaped occlusion ports, and the other adjacent stator iron yokes are connected with each other and the joints are provided with V-shaped openings, so that the stator coil can be wound on the in-line expansion stator core and can be rounded after the winding is completed, and the stator coil assembly with the in-line expansion rounding structure is formed.
Furthermore, the stator encapsulation support is formed into an integrated encapsulation structure after plastic materials are injected and molded on the stator core, so that a layer of plastic insulation layer is formed around the stator teeth, and a plastic front end part and a plastic rear end part are respectively formed at the upper end and the lower end of the stator core.
Furthermore, a plurality of scattered plastic bosses are formed on the front end part of the plastic by injection molding of plastic materials, a thread hanging Pin needle is fixed on each plastic boss, and the number of the plastic bosses and the number of the thread hanging Pin needles are equal to that of the stator slots and the stator teeth.
The brushless direct current motor further comprises a rotor assembly and an integrally formed motor shell, wherein a circular hollow inner cavity for accommodating the in-line expanded rounding stator coil assembly is formed in the motor shell, the in-line expanded rounding stator coil assembly is fixed in the circular hollow inner cavity, a front cover is further arranged in the motor shell, a middle shaft hole which is coaxial and penetrates through the front cover and the in-line expanded rounding stator coil assembly is formed in the front cover and the in-line expanded rounding stator coil assembly, and the rotor assembly penetrates through the middle shaft hole to enable the in-line expanded rounding stator coil assembly, the rotor assembly and the motor shell to be integrated.
Further, motor casing is both ends opening and the circular casing of inside cavity, motor casing's tail end is provided with integrated into one piece's bearing fixed stay frame, the motor casing is provided with the heat dissipation windowing in the both sides that are located bearing fixed stay frame.
Furthermore, the bearing fixing support frame comprises an annular end cover which is vertical to the axial direction and concentric with the axial direction, support connecting ribs are arranged between two sides of the annular end cover and the motor shell along the vertical direction, the annular end cover is connected with the motor shell through the support connecting ribs to form an integrally formed structure, and a first bearing installation groove used for fixing the rotor assembly is formed in the middle of the annular end cover.
Further, be provided with many water conservancy diversion pieces between circular cavity inner chamber and the motor casing inner wall, and the equipartition forms the guiding gutter that is used for the circulation of air between motor casing and the circular cavity inner chamber on motor casing's inner wall.
Further, the rotor subassembly is including rotor shaft core, permanent magnet, spacing ring, the lower extreme of rotor shaft core runs through the centre bore of in-line expansion edge-rolling stator coil pack, permanent magnet and spacing ring all overlap and establish on rotor shaft core, and the spacing ring is provided with two, permanent magnet sets up between two spacing rings.
Further, the upper end sleeve of the rotor shaft core is provided with a top bearing, the lower end sleeve is provided with a tail bearing, the top bearing and the tail bearing are respectively sleeved with a bearing silica gel sleeve, and the tail of the rotor shaft core, the tail bearing and the bearing silica gel sleeve are assembled and fixed in a first bearing installation groove of the bearing fixing and supporting frame together. The front cover is assembled at the plastic rear end part of the stator core, and the upper end of the rotor shaft core penetrates through a middle shaft hole of the front cover. Still be provided with in the protecgulum with the second bearing mounting groove of bearing silica gel cover looks adaptation, the second bearing mounting groove sets up under the well shaft hole of protecgulum, set up on the second bearing mounting groove after top bearing and the combination of bearing silica gel cover.
The utility model has the advantages of, compare in prior art: the brushless direct current motor of the utility model is provided with the in-line expansion type rounding stator coil assembly, can be expanded for winding, the winding mode of the coil can be changed from the traditional internal winding type to the external winding type, the needle threading space of the winding needle is enlarged, the space area in the winding groove is effectively increased under the same iron core size, and the groove fullness rate of the stator coil is effectively improved; simultaneously, because the space grow of winding, the number of turns of the enameled wire of establishing around can be many relatively, and the adjustment space is also bigger, and the power of the adjustment motor of being convenient for can be according to motor power level adjustment line diameter size and the reasonable current density of matching, can effectively reduce stator coil's temperature rise, reduces the fault rate of product, effectively promotes the life of product.
Drawings
Fig. 1 is a schematic structural diagram of the present embodiment.
Fig. 2 is a sectional view of the present embodiment.
Fig. 3 is an exploded view of the present implementation.
Fig. 4 is a first perspective structural view of the motor housing of the present embodiment.
Fig. 5 is a second perspective structural view of the motor housing of the present embodiment.
Fig. 6 is a schematic structural view of the rotor assembly of the present embodiment.
Fig. 7 is a schematic structural view of the in-line unwinding type rounding stator coil assembly of the present embodiment.
Fig. 8 is a schematic structural view of the stator encapsulating bracket of the present embodiment.
Fig. 9 is a schematic structural view of the stator core of the present embodiment.
Fig. 10 is a schematic structural view of the in-line unwinding type rounding stator coil assembly of the present embodiment in an unwound state.
Fig. 11 is a schematic structural view of the front cover of the present embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-11, in order to achieve the above purpose, the technical solution of the present embodiment is as follows:
the embodiment provides a brushless direct current motor with an in-line expansion type rounding stator core structure, which comprises an in-line expansion type rounding stator coil assembly 1, a rotor assembly 2 and an integrally formed motor shell 3, wherein a circular hollow inner cavity 31 for accommodating the in-line expansion type rounding stator coil assembly 1 is arranged in the motor shell 3, the in-line expansion type rounding stator coil assembly 1 is fixed in the circular hollow inner cavity 31, a front cover 4 is further arranged in the motor shell 3, a middle shaft hole 5 which is coaxial and penetrates up and down is arranged in the front cover 4 and the in-line expansion type rounding stator coil assembly 1, and the rotor assembly 2 penetrates through the middle shaft hole 5 to form the in-line expansion type rounding stator coil assembly 1, the rotor assembly 2 and the motor shell 3 into a whole.
Further, the in-line unwinding rounding stator coil assembly 1 comprises an in-line unwinding stator core 11, a stator coil (not shown) and a stator encapsulating bracket 13, wherein the stator core 11 comprises a plurality of stator teeth 111, a stator slot 112 is formed between every two adjacent stator teeth 111, the stator coil is arranged in the stator slot 112 and consists of a certain number of coil turns wound along the stator teeth 111, and the stator encapsulating bracket 13 is encapsulated on the stator core 11 to form an integrated structure capable of unwinding, winding, combining and rounding.
Further, the in-line unwinding stator core 11 further comprises stator iron yokes 115, the stator iron yokes 115 are integrally formed with the stator teeth 111, wherein V-shaped engagement openings 113 are formed at two end edges of one stator iron yoke 115, and V-shaped openings 114 are formed at joints where the other adjacent stator iron yokes are joined, so that the stator coil can be wound on the in-line unwinding stator core 11 and is wound to form the in-line unwinding stator coil assembly 1 after the winding is completed. After the in-line expansion type rounding stator coil assembly 1 is expanded, the winding mode of a coil can be changed into an external winding mode from a traditional internal winding mode, the needle threading space of a winding needle is enlarged, the space area in a winding groove is effectively increased under the same iron core size, and the groove fullness rate of the stator coil is effectively improved. Simultaneously, because the space grow of winding, the number of turns of the enameled wire of establishing around can be many relatively, and the adjustment space is also bigger, and the power of the adjustment motor of being convenient for can be according to motor power level adjustment line diameter size and the reasonable current density of matching, can effectively reduce stator coil's temperature rise, reduces the fault rate of product, effectively promotes the life of product.
Further, the stator encapsulation bracket 13 is formed by injection molding a plastic material on the stator core 11 to form an integrated encapsulation structure, so that a plastic insulation layer (not shown) is formed around the stator teeth 111, and a plastic front end 131 and a plastic rear end 132 are respectively formed at the upper and lower ends of the stator core 11.
Furthermore, a plurality of plastic bosses 133 are formed on the plastic front end portion 131 by injection molding with plastic material, and a plurality of hanging Pin needles 12 are fixed on each plastic boss 133, and the number of the plastic bosses 133 and the hanging Pin needles 12 is equal to that of the stator slots 112 and the stator teeth 111.
Further, the motor housing 3 is a circular housing with openings at both ends and a hollow interior, the tail end of the motor housing 3 is provided with an integrally formed bearing fixing support frame 32, and the motor housing is provided with heat dissipation windows 35 at both sides of the bearing fixing support frame 32. In this application, bearing fixing support frame 32 is used for fixing rotor and bearing, makes the rotor structure more firm, uses safelyr. The heat dissipation window 35 can be used for ventilation and heat dissipation, and can also be used for inserting electric wires, so that wiring is more convenient.
Further, the bearing fixing support frame 32 includes an annular end cover 321 which is axially vertical and concentric, a supporting connection rib 322 is arranged between two sides of the annular end cover 321 and the motor housing 3 along the vertical direction, the annular end cover 321 is connected with the motor housing 3 through the supporting connection rib 322 to form an integrated structure, and a first bearing installation groove 323 for fixing the rotor assembly is arranged in the middle of the annular end cover. Compared with the traditional bearing fixing support frame 32 separated from the motor shell, the bearing fixing support frame 32 and the shell are integrally formed, the position can not deviate, the structure is more stable, and the stability is better.
Further, a plurality of flow deflectors 33 are arranged between the circular hollow inner cavity 31 and the inner wall of the motor housing 3 and are uniformly distributed on the inner wall of the motor housing 3, and flow guiding grooves 34 for air circulation are formed between the motor housing 3 and the circular hollow inner cavity 31. The guide groove 34 communicates with the heat dissipation window 35.
Further, the rotor assembly 2 comprises a rotor shaft core 21, permanent magnets 22 and limiting rings 23, the lower end of the rotor shaft core 21 penetrates through the central shaft hole 5 of the in-line expanded type edge-rolling stator coil assembly 1, the permanent magnets 22 and the limiting rings 23 are sleeved on the rotor shaft core 21, the number of the limiting rings 23 is two, and the permanent magnets 22 are arranged between the two limiting rings 23.
Further, the upper end of the rotor shaft core 21 is sleeved with a top bearing 24, the lower end is sleeved with a tail bearing 25, the top bearing 24 and the tail bearing 25 are both sleeved with a bearing silica gel sleeve 26, and the tail of the rotor shaft core 21, the tail bearing 25 and the bearing silica gel sleeve 26 are assembled together and then fixed in the first bearing installation groove 323 of the bearing fixing support frame 32. The front cover 4 is fitted to the plastic rear end portion 132 of the stator core 11, and the upper end of the rotor shaft core 21 penetrates the center shaft hole 5 of the front cover 4. A second bearing mounting groove 41 matched with the bearing silica gel sleeve 26 is further arranged in the front cover 4, the second bearing mounting groove 41 is arranged right below the center shaft hole 5 of the front cover 4, and the top bearing 24 and the bearing silica gel sleeve 26 are combined and then arranged on the second bearing mounting groove 41. In the application, the bearing silica gel sleeve 26 and the top bearing 24 are placed in the second bearing installation groove 41 of the front cover 4, and the rotor shaft core 21 penetrates through the front cover 4 to bond the front cover 4 and the motor housing 3 into a whole, so that the rotor assembly 2 is firmly fixed in the motor housing 3; meanwhile, due to the upper and lower end type bearing installation mode formed by the bearing fixing support frame 32 at the tail end of the motor shell 3 and the second bearing installation groove 41 in the front cover 4, the upper and lower assembly positions can be adjusted to be consistent up and down in advance, the bearings at the upper and lower ends can be limited, the bearings at the upper and lower ends are guaranteed to have a good concentricity assembly process, and the stability of the rotor during high-speed operation is effectively guaranteed; in addition, the bearings at the upper end and the lower end of the rotor assembly 2 are respectively arranged in the front cover 4 at the tail end and the upper end of the motor shell 3, the bearing intervals at the two ends are far away, and after the bearing at one end of the rotor shakes, the bearing at the other end is less influenced, and the structure is more stable. The bearing silica gel cover 26 of adding in the structure can effectively reduce vibrations and noise that the rotor brought when driving the high-speed operation of bearing, also has insulating effect simultaneously, can avoid on the electric current of coil transmits motor casing 3 from rotor bearing, effectively blocks the return circuit of axial current, avoids the electric leakage.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (4)
1. The brushless direct current motor is characterized by comprising an in-line expansion type rounding stator coil assembly, wherein the in-line expansion type rounding stator coil assembly comprises an in-line expansion type stator core, a stator coil and a stator packaging support, the in-line expansion type stator core comprises a plurality of stator teeth, stator slots are formed between every two adjacent stator teeth, the stator coil is arranged in the stator slots and consists of a certain number of turns of coils wound along the stator teeth, and the stator packaging support is packaged on the stator core to form an integrated structure capable of expanding, winding, combining and rounding.
2. The brushless dc motor having an in-line unwinding type wound stator core structure according to claim 1, wherein the in-line unwinding type stator core further comprises a stator yoke integrally formed with the stator teeth, wherein V-shaped engagement openings are formed at both end edges of the stator yoke, and V-shaped openings are formed at the joints between the other adjacent stator yokes, so that the stator coil can be wound on the in-line unwinding type stator core and wound after the winding is completed to form an in-line unwinding type wound stator coil assembly.
3. The brushless dc motor as claimed in claim 2, wherein the stator encapsulating bracket is formed of a plastic material by injection molding on the stator core to form an integral encapsulating structure, so that a plastic insulating layer is formed around the stator teeth and a plastic front end and a plastic rear end are formed at the upper and lower ends of the stator core, respectively.
4. The brushless DC motor having an in-line unwinding type wound stator core structure according to claim 3, wherein the plastic front end portion is simultaneously injection molded with plastic material to form a plurality of plastic bosses arranged in a dispersed manner, each plastic boss is fixed with a plurality of wire hanging pins, and the number of the plastic bosses and the wire hanging pins is equal to the number of the stator slots and the stator teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221059274.4U CN217508403U (en) | 2022-05-05 | 2022-05-05 | Brushless direct current motor with in-line expansion type rolling stator core structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221059274.4U CN217508403U (en) | 2022-05-05 | 2022-05-05 | Brushless direct current motor with in-line expansion type rolling stator core structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217508403U true CN217508403U (en) | 2022-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221059274.4U Active CN217508403U (en) | 2022-05-05 | 2022-05-05 | Brushless direct current motor with in-line expansion type rolling stator core structure |
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| CN (1) | CN217508403U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023213005A1 (en) * | 2022-05-05 | 2023-11-09 | 广州市坤驰电机有限公司 | Brushless direct-current motor |
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2022
- 2022-05-05 CN CN202221059274.4U patent/CN217508403U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023213005A1 (en) * | 2022-05-05 | 2023-11-09 | 广州市坤驰电机有限公司 | Brushless direct-current motor |
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Effective date of registration: 20231023 Address after: No.9 Liangyuan Second Road, Liangtian Industrial Park, Baiyun District, Guangzhou City, Guangdong Province, 510080 Patentee after: GUANGZHOU KUNCHI MOTOR Co.,Ltd. Address before: Room 302, Building 20, No.7 Industrial Zone, Tianliao Community, Yutang Street, Guangming District, Shenzhen, Guangdong 518000 Patentee before: Shenzhen Hongyuan Precision Electric Co.,Ltd. |