CN210806865U - Stator for external rotor fan - Google Patents
Stator for external rotor fan Download PDFInfo
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- CN210806865U CN210806865U CN202020809344.8U CN202020809344U CN210806865U CN 210806865 U CN210806865 U CN 210806865U CN 202020809344 U CN202020809344 U CN 202020809344U CN 210806865 U CN210806865 U CN 210806865U
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Abstract
The utility model relates to a stator for an external rotor fan, which comprises a stator core body, wherein the stator core body comprises a base body and axial convex columns, the middle part of the base body is provided with an axial through hole, an axial winding groove is formed between the adjacent axial convex columns, and the two axial ends of the stator core body are respectively connected with a winding wire protective cover and a circuit board through a connecting protective frame; the connecting protection frame comprises a ring tooth piece and a connecting pipe sleeve, the ring tooth piece is used for being attached to and connected with the end face of the stator core body, the connecting pipe sleeve is connected to the middle of the ring tooth piece, a cover body connecting hole is formed in the middle of the winding wire protection cover and used for being in sleeve connection with the corresponding connecting pipe sleeve, a plate body connecting hole is formed in the middle of the circuit board and used for being in sleeve connection with the corresponding connecting pipe sleeve, and the axial through hole, the ring tooth piece middle portion, the connecting pipe sleeve, the cover body connecting. Compared with the prior art, the utility model has the advantages of effectively protect winding wire to avoid its damage fracture, guarantee winding wire when the embedding and stable fastness, the overall stability after the embedding are good, the operation is convenient.
Description
Technical Field
The utility model belongs to the technical field of the fan, especially, relate to a stator for external rotor fan.
Background
Fans in the current market can be divided into an inner rotor fan and an outer rotor fan, wherein the inner rotor fan is a structure that a rotor is arranged inside and outside a stator and fan blades are indirectly connected with the rotor, and the outer rotor fan is a structure that the rotor is arranged outside the stator and the fan blades are directly connected with the rotor; the outer rotor fan has the characteristics of high efficiency, low noise, light weight, compact structure, convenience in installation and maintenance and the like due to the structure and the pneumatic design mode that the fan blades are driven by the outer rotor, and is widely applied to the fields of air conditioners, air purification systems and the like in various indoor places.
However, the existing outer rotor fan generally has the problems of unstable performance, easy short circuit, short service life and the like, and an important reason is that a part of the stator related to the winding wire is unstable, for example, the winding wire is easy to damage and break due to lack of effective protection on the winding wire (especially, the winding wire parts located at two ends of the axis of the stator core are protected by binding wires at present, but the winding wire exposed outside is easy to be broken by wiping, thus causing short circuit), and the like; in addition, the current outer rotor fan cannot be flexibly designed according to different technical requirements, is inconvenient to operate and has a narrow application range.
In order to overcome exist not enough among the above-mentioned prior art, the utility model provides an external rotor is stator for fan has effectively to protect the winding wire and avoids its damage fracture, guarantees winding wire when the embedding and a great deal of advantages such as the stable fastness after the embedding, overall stability are good, the operation is convenient.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims at providing an external rotor is stator for fan has effectively to protect the winding wire and avoids its damage fracture, guarantees winding wire when the embedding and stability fastness, the overall stability after the embedding good, operation a great deal of advantage such as convenient.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a stator for an outer rotor fan comprises a stator core body, wherein the stator core body comprises a base body and a plurality of axial convex columns, the middle part of the base body is provided with an axial through hole, the plurality of axial convex columns are connected to the periphery of the base body, axial winding grooves used for embedding winding wires are formed between every two adjacent axial convex columns, and two axial ends of the stator core body are respectively connected with a winding wire protective cover and a circuit board through a connecting protective frame; the connecting protection frame comprises a ring tooth piece and a connecting pipe sleeve, wherein the ring tooth piece is used for being connected with the end face of the stator core body in a laminating mode, the connecting pipe sleeve is connected to the middle of the ring tooth piece, a cover body connecting hole is formed in the middle of the winding wire protection cover and used for being connected with the corresponding connecting pipe sleeve in a sleeved mode, a board body connecting hole is formed in the middle of the circuit board and used for being connected with the corresponding connecting pipe sleeve in a sleeved mode, and the axial through hole, the ring tooth piece middle portion, the connecting pipe sleeve.
In the utility model, the winding wire protective cover can cover the exposed winding wire at the same end side of the winding wire protective cover, the coil is integrally protected, the short circuit problem caused by the scratch, the scratch and the like of the outer rotor to the winding wire of the part can be effectively avoided, the protection grade of the winding wire is high, and the performance of the stator is more stable; the utility model adds the circuit board structure, and the winding wire and the outgoing line of the winding wire are directly welded on the circuit board, thus the increase and decrease replacement of electronic components, the special circuit connection of the motor and the like can be flexibly carried out according to different technical requirements of products, and the operation convenience and the functional design diversity are effectively realized; during specific assembly, the ring tooth sheet of the connecting protection frame is firstly attached to the end face of the stator core (wherein the end face of the stator core comprises a base end face and an axial convex column end face), then wire embedding and winding wire protection covers are carried out, and the fixed connection between the ring tooth sheet and the stator core can be realized by winding the winding wire (the attachment connection refers to the attachment between the surface of the ring tooth sheet and the end face of the stator core, and then the connection is carried out by winding the winding wire or other connecting pieces), so that the connection between the whole connecting protection frame and the stator core is realized; the connecting pipe sleeve is not only used for connecting a winding wire protective cover and a circuit board, but also can limit the range of the inserted wire and enhance the stability and firmness of the inserted wire, so that the winding wire is prevented from loosening and irregularity, the stator core and the winding wire are effectively isolated, and the stator core and the winding wire are protected. Meanwhile, in order to facilitate understanding, "the winding wire protective cover and the circuit board are respectively connected to two axial ends of the stator core through a connecting protective frame", the connecting protective frame connected to the winding wire protective cover is represented as a connecting protective frame a, the connecting protective frame connected to the circuit board is represented as a connecting protective frame B, and the connecting protective frame a and the connecting protective frame B are components with the same structure, shape and size. Therefore, the utility model has stable performance, flexible and various functional design, long service life and convenient installation; furthermore, the utility model discloses winding wire protection casing, connection are protected between frame, circuit board and other parts structural design reasonable compactness of increase, consequently can not influence traditional product size, and the range of application is extensive.
Preferably, the winding wire protective cover has two axial ends respectively including a cover body connecting hole and a cover inlet, and the cover wall between the cover body connecting hole and the cover inlet is provided with a plurality of heat dissipating through holes.
The winding wire protective cover covers the winding wire at the same end side through the cover inlet to realize protection, and the heat dissipation through holes are formed in the cover wall, so that ventilation and heat dissipation inside the winding wire protective cover are facilitated, the running stability of the stator is ensured, and the service life is longer.
Preferably, the winding wire protective cover is a bowl-shaped structure with an arc-shaped cover wall and a circular cover inlet, and the maximum radial length of the winding wire protective cover is less than or equal to the radial length of the stator core.
The bowl-shaped structure is more matched with the shape of the winding wire part at the same end side, the structure is compact while the protection effect is ensured, and the space waste is avoided; the winding wire protective cover and the stator core are limited in relation in radial length, interference caused by the increase of the winding wire protective cover to the assembly and operation of the rotor can be avoided, and the structure design is compact and reasonable.
Preferably, the annular tooth piece comprises an annular substrate and a plurality of radial racks connected to the periphery of the annular substrate, the annular substrate is attached to the end face of the base body, the radial racks are attached to the end face of the axial convex column, and the radial length of each radial rack is smaller than or equal to that of the axial convex column.
The matching between the ring tooth piece and the stator core body is realized; the relation between the radial length of the radial rack and the radial length of the axial convex column can reduce the matching precision requirement of the radial rack and the axial convex column and avoid material waste.
Preferably, the peripheral side wall of the ring tooth is flush with the slot wall of its corresponding axial winding slot.
If not flush, there can be the clearance between the cell wall of winding wire and axial winding groove or with ring tooth piece periphery lateral wall, at this moment when winding wire direct card just very easy scotch the fracture in axial projection apex angle or ring tooth piece apex angle, influence stator performance stability, and set to flush the damage fracture that can effectively avoid winding wire, in addition, generally adopt plastic material on the selection material of connecting the fender bracket, consequently if not flush, ring tooth piece part will be out of shape easily, influence the regularity of rule, stability.
Preferably, the periphery of the connecting pipe sleeve is circumferentially provided with a clamping groove, and the clamping groove is formed by a sliding-in tooth which is far away from the annular tooth piece in the axial direction and a positioning tooth which is close to the annular tooth piece.
The winding wire protective cover is clamped with the clamping groove on the corresponding connecting pipe sleeve, and the circuit board is clamped with the clamping groove on the corresponding connecting pipe sleeve; through the mode of draw-in groove joint, improve the stable fastness of connecting.
Preferably, the sliding-in teeth axially comprise arc-shaped surfaces and blocking surfaces, the arc-shaped surfaces face outwards and are bent towards the ring teeth, the positioning teeth axially comprise positioning surfaces, the blocking surfaces and the positioning surfaces form the clamping grooves, first clamping teeth are arranged at the outer ends of the blocking surfaces, and second clamping teeth are arranged at the outer ends of the positioning surfaces.
The arc-shaped surface of the sliding-in tooth is convenient for the hole wall of the cover body connecting hole and the hole wall of the plate body connecting hole to quickly slide into the clamping groove, so that the mounting efficiency is improved; first latch, second latch all are effectively to avoid winding wire protection casing, circuit board roll-off draw-in groove, improve the stable fastness of connecting, and wherein first latch is the back-off tooth equivalently, and first latch, second latch can be elastic rubber material in addition, compress tightly winding wire protection casing, circuit board in the draw-in groove, realize interference fit, and stability is better.
Preferably, an inner insulating paper is arranged between a groove wall of the axial winding groove and the winding wire, an outer insulating paper is arranged between a notch of the axial winding groove and the winding wire, the inner insulating paper and the outer insulating paper in the same axial winding groove are overlapped to form an insulating sleeve, and two axial ends of the insulating sleeve protrude out of the exposed end face of the corresponding ring tooth piece.
The winding wire positioned in the axial winding groove is circumferentially wrapped by an insulating sleeve formed by the inner insulating paper and the outer insulating paper, so that effective insulation is realized, and the stability of the performance of the stator is ensured; the inner insulating paper and the outer insulating paper are respectively adopted for facilitating installation, in the assembling process, the inner insulating paper is attached to the groove wall and then subjected to wire embedding, and after the wire embedding is completed, the outer insulating paper is assembled, so that the process is smooth, and the product performance and the product quality are effectively ensured; simultaneously, all bulge in the terminal surface that corresponds the ring tooth piece and expose with the axial both ends of insulating cover, strengthened insulating protection grade through increase insulating material's scope on the one hand, on the other hand effectively avoids having set up one deck liner between ring tooth piece apex angle and winding wire because of the direct card of winding wire is relatively easy scotch at the apex angle of ring tooth piece promptly. Furthermore, the protection grade of the insulating paper is F grade, the type number of the insulating paper is preferably 6644F-DM, and the insulating paper has good mechanical property and electrical property.
Preferably, the base body is provided with a plurality of axial positioning holes, and the ring tooth piece is provided with convex teeth which are matched and connected with the axial positioning holes.
The axial positioning holes are connected with the convex teeth in a splicing matching mode, so that the ring tooth piece can be accurately positioned on the base body, the ring tooth piece is attached to the base body, accurate positioning connection between the connecting protective frame and the stator core body is achieved, meanwhile, the axial positioning holes can also be used for inserting the positioning rods, the multilayer stator chips are arranged neatly when being punched, the product quality is good, the inserted lines cannot be influenced, and the winding lines cannot be damaged.
Preferably, the stator core is formed in one step by punching multiple layers of silicon steel sheets at high speed.
The eddy current loss can be effectively reduced by adopting the silicon steel sheet; the utility model discloses a high-speed punching press one shot forming stator core has and folds and press advantages such as precision height, stator stable performance, reduction consumable, long service life, automation, efficient.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides an external rotor is stator for fan has effectively to protect the winding wire and avoids its damage fracture, guarantees winding wire when the embedding and a great deal of advantages such as stable fastness, the overall stability is good, the operation is convenient after the embedding. In the utility model, the winding wire protective cover can cover the exposed winding wire at the same end side of the winding wire protective cover, thereby effectively avoiding the short circuit problem caused by the scratch, the scratch and the like of the external force to the winding wire, improving the protection grade of the winding wire and ensuring the stator performance to be more stable; the connecting protection frame realizes the connection of the winding wire protection cover, the circuit board and the stator core body, can limit the range of the inserted wire, enhances the stable firmness of the inserted wire and protects the stator core body and the winding wire; the utility model discloses in increased the circuit board structure, can carry out the increase and decrease change of electronic components, the circuit connection of motor specialty etc. in a flexible way according to the different technical requirement of product like this, effectively realize operation convenience, functional design variety. The utility model discloses stable performance, functional design are nimble various, long service life, structural design are reasonable compact.
Drawings
Fig. 1 is a schematic view of the overall structure of the stator of the present embodiment;
FIG. 2 is a schematic view of another angle of the stator of the present embodiment;
fig. 3 is a schematic structural view of a stator core according to the present embodiment;
fig. 4 is a schematic structural view of the protective cover for the winding wire according to the embodiment;
FIG. 5 is a schematic view showing a simple structure of the connection surface between the wiring board and the winding wire and between the wiring board and the lead-out wire according to the embodiment;
FIG. 6 is a schematic structural view of the connecting guard of the present embodiment;
FIG. 7 is an enlarged view of portion A of FIG. 6;
FIG. 8 is a schematic view of the connection protection frame of the present embodiment at another angle;
reference numerals:
the stator core 100, the base 110, the axial through hole 111, the reinforcing bar 112, the axial positioning hole 113, the axial convex column 120, the extension column 121, the arc-shaped retaining column 122, the axial winding slot 130, the slot wall 131, the slot opening 132, the winding wire 200, the connecting guard 300, the ring tooth sheet 310, the annular substrate 311, the radial rack 312, the convex tooth 313, the connecting pipe sleeve 320, the slide-in tooth 321, the arc-shaped surface 321a, the resisting surface 321b, the first latch 321b1, the positioning tooth 322, the positioning surface 322a, the second latch 322a1, the winding wire protective cover 400, the cover connecting hole 410, the cover inlet 420, the cover wall 430, the heat dissipation through hole 431, the circuit board 500, the board connecting hole 510, the inner insulating paper 610, the outer insulating paper 620 and the outgoing line 700.
Detailed Description
The following describes in detail an embodiment of the present invention with reference to the drawings.
Regarding the reference orientation of the components related to the present embodiment, for example, in fig. 1, the direction close to the axis of the axial through hole 111 is "inner" and the direction away from the axis of the axial through hole 111 is "outer".
Example (b):
a stator for an external rotor fan, as shown in fig. 1-8, includes a stator core 100 formed by punching multiple layers of silicon steel sheets at a high speed in one step, where the stator core 100 includes a base 110 with an axial through hole 111 formed in the middle, and 16 axial convex columns 120 connected to the periphery of the base 110, and an axial winding slot 130 for embedding a winding wire 200 (specifically, an enameled wire) is formed between adjacent axial convex columns 120; specifically, the base 110 is provided with 2 axial positioning holes 113, 6 pairs of axial reinforcing holes (not shown), and a reinforcing strip 112 is connected between each pair of axial reinforcing holes in a penetrating manner, so that the stability of the product can be enhanced and the product is not easy to deform; the axial convex column 120 comprises an extension column 121 relatively positioned on the inner side and an arc-shaped retaining column 122 relatively positioned on the outer side and protruding out of the side wall of the axial convex column 120, and the arc-shaped retaining column 122 is coaxial with the axial through hole 111; the winding wire protective cover 400 and the circuit board 500 are respectively connected to both ends of the stator core 100 in the axial direction through a connecting protective frame 300.
The winding wire protective cover 400 is made of plastic, two axial ends of the winding wire protective cover are respectively provided with a cover body connecting hole 410 and a cover inlet 420, 24 strip-shaped heat dissipation through holes 431 are formed in a cover wall 430 between the cover body connecting hole 410 and the cover inlet 420 and are uniformly arranged at intervals in the circumferential direction, the extension lines of the heat dissipation through holes 431 penetrate through the center of the cover body connecting hole 410, and the heat dissipation through holes 431 are distributed in a radial shape; further, the winding wire protective cover 400 is a bowl-shaped structure with the cover wall 430 being arc-shaped and the cover entrance 420 being circular, and the maximum radial length of the winding wire protective cover 400 is smaller than the radial length of the stator core 100.
The winding wire 200 and the outgoing wire 700 are welded to the circuit board 500, so that the increase and decrease of electronic components and the special circuit connection of the motor can be flexibly performed according to different technical requirements of products.
The connecting protection frame 300 comprises a ring tooth piece 310 and a connecting pipe sleeve 320, wherein the ring tooth piece 310 is used for being attached to and connected with the end face of the stator core 100, the connecting pipe sleeve 320 is connected to the middle of the ring tooth piece 310, a convex tooth 313 matched and connected with an axial positioning hole 113 is arranged on the ring tooth piece 310, the axial positioning hole 113 is connected with the convex tooth 313 in an inserting mode, and the positioning connection between the connecting protection frame 300 and the base body 110 is achieved; the cover body connecting hole 410 and the plate body connecting hole 510 are respectively sleeved on the corresponding connecting pipe sleeves 320, and the axial through hole 111, the middle part of the ring tooth piece 310, the connecting pipe sleeves 320, the cover body connecting hole 410 and the plate body connecting hole 510 are communicated and coaxially arranged.
Further, the annular tooth piece 310 comprises an annular substrate 311 and 16 radial racks 312 connected to the periphery of the annular substrate 311, the annular substrate 311 is attached to the end face of the base 110, the shape and the size of the annular substrate 311 are matched with those of the base 110, the radial racks 312 are attached to the end face of the extension column 121, the shape and the size of the radial racks are matched with those of the extension column, the radial length of the radial racks 312 is smaller than that of the axial convex column 120, and the winding wire 200 after wire embedding is prevented from directly abutting against the vertex angle of the axial convex column 120; furthermore, the peripheral side wall of the tooth 310 is flush with the slot wall 131 of its corresponding axial winding slot 130. A clamping groove for clamping the winding wire protective cover 400 and the circuit board 500 is circumferentially arranged on the outer periphery of the connecting pipe sleeve 320, and is formed by a sliding-in tooth 321 which is far away from the ring tooth piece 310 in the axial direction and a positioning tooth 322 which is close to the ring tooth piece 310.
The slide-in teeth 321 axially include arc-shaped surfaces 321a and abutting surfaces 321b, the arc-shaped surfaces 321a are bent outward toward the ring teeth 310, the positioning teeth 322 axially include positioning surfaces 322a, the abutting surfaces 321b and the positioning surfaces 322a form the clamping grooves, first clamping teeth 321b1 are arranged at the outer ends of the abutting surfaces 321b, and second clamping teeth 322a1 are arranged at the outer ends of the positioning surfaces 322a, when the winding wire protective cover 400 and the circuit board 500 are clamped in the corresponding clamping grooves, the corresponding first clamping teeth 321b1 and the corresponding second clamping teeth 322a1 realize the extrusion of the winding wire protective cover 400 and the circuit board 500, that is, the interference fit between the winding wire protective cover 400 and the circuit board 500 is realized.
The ring tooth piece 310, the connecting sleeve 320, the sliding-in teeth 321, the positioning teeth 322, the first latch 321b1, and the second latch 322a1 are integrally formed by plastic, wherein the first latch 321b1 and the second latch 322a1 may also be made of rubber elastic material.
An inner insulating paper 610 is arranged between the groove wall 131 of the axial winding groove 130 and the winding wire 200, an outer insulating paper 620 is arranged between the notch of the axial winding groove 130 and the winding wire 200, the inner insulating paper 610 and the outer insulating paper 620 which are positioned in the same axial winding groove 130 are overlapped to form an insulating sleeve, two axial ends of the insulating sleeve protrude out of the exposed end face of the corresponding ring tooth piece 310, wherein the insulating grades of the inner insulating paper 610 and the outer insulating paper 620 are F grades, and the specific model is 6644F-DM.
The specific assembly steps of the product of the embodiment are as follows:
the inner insulating paper 610 is attached to the groove wall 131 of the axial winding groove 130 → the ring tooth piece 310 of the connecting cage 300 is connected to the end face of the stator core 100 in a matching manner → the winding wire 200 is inserted → the outer insulating paper 620 is provided between the groove opening 132 and the winding wire 200 → the winding wire 200 is welded to the circuit board 500, the lead wire 700 → the winding wire protector 400 and the circuit board 500 are connected to the corresponding connecting sleeve 320 in a sleeving manner.
The above description in this specification is merely illustrative of the present invention. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (10)
1. The utility model provides an external rotor is stator for fan, includes the stator core, the stator core includes that the middle part is opened the base member that has axial through-hole, is connected many axial projection at the base member periphery, forms the axial winding groove that is used for inlaying the winding wire between adjacent axial projection, its characterized in that: the two axial ends of the stator core body are respectively connected with a winding wire protective cover and a circuit board through a connecting protective frame; the connecting protection frame comprises a ring tooth piece and a connecting pipe sleeve, wherein the ring tooth piece is used for being connected with the end face of the stator core body in a laminating mode, the connecting pipe sleeve is connected to the middle of the ring tooth piece, a cover body connecting hole is formed in the middle of the winding wire protection cover and used for being connected with the corresponding connecting pipe sleeve in a sleeved mode, a board body connecting hole is formed in the middle of the circuit board and used for being connected with the corresponding connecting pipe sleeve in a sleeved mode, and the axial through hole, the ring tooth piece middle portion, the connecting pipe sleeve.
2. The stator for the external rotor fan according to claim 1, wherein: the axial two ends of the winding wire protective cover are respectively provided with a cover body connecting hole and a cover inlet, and a plurality of heat dissipation through holes are formed in the cover wall between the cover body connecting hole and the cover inlet.
3. The stator for the external rotor fan according to claim 2, wherein: the winding wire protective cover is of a bowl-shaped structure with an arc-shaped cover wall and a circular cover inlet, and the maximum radial length of the winding wire protective cover is smaller than or equal to that of the stator core body.
4. The stator for the external rotor fan according to claim 1, wherein: the annular tooth piece comprises an annular substrate and a plurality of radial racks connected to the periphery of the annular substrate, the annular substrate is attached to the end face of the base body, the radial racks are attached to the end face of the axial convex column, and the radial length of each radial rack is smaller than or equal to that of the axial convex column.
5. The stator for an external rotor fan according to claim 1 or 4, wherein: the peripheral side wall of the ring tooth piece is flush with the groove wall of the corresponding axial winding groove.
6. The stator for the external rotor fan according to claim 1, wherein: the periphery of the connecting pipe sleeve is circumferentially provided with a clamping groove, and the clamping groove is formed by sliding-in teeth which are far away from the annular tooth piece in the axial direction and positioning teeth which are close to the annular tooth piece.
7. The stator for the external rotor fan according to claim 6, wherein: the sliding-in teeth comprise arc-shaped surfaces and blocking surfaces in the axial direction, the arc-shaped surfaces face outwards and are bent towards the ring tooth piece, the positioning teeth comprise positioning surfaces in the axial direction, the blocking surfaces and the positioning surfaces form the clamping grooves, and second clamping teeth are arranged at the outer ends of the blocking surfaces, which are provided with first clamping teeth, and the outer ends of the positioning surfaces are provided with second clamping teeth.
8. The stator for the external rotor fan according to claim 1, wherein: and inner insulating paper is arranged between the groove wall of the axial winding groove and the winding wire, outer insulating paper is arranged between the notch of the axial winding groove and the winding wire, the inner insulating paper and the outer insulating paper in the same axial winding groove are overlapped to form an insulating sleeve, and the two axial ends of the insulating sleeve protrude out of the exposed end face of the corresponding ring tooth piece.
9. The stator for the external rotor fan according to claim 1, wherein: the base body is provided with a plurality of axial positioning holes, and the ring tooth piece is provided with convex teeth which are matched and connected with the axial positioning holes.
10. The stator for the external rotor fan according to claim 1, wherein: the stator core body is formed in one step by adopting multi-layer silicon steel sheets through high-speed stamping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020809344.8U CN210806865U (en) | 2020-05-15 | 2020-05-15 | Stator for external rotor fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020809344.8U CN210806865U (en) | 2020-05-15 | 2020-05-15 | Stator for external rotor fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210806865U true CN210806865U (en) | 2020-06-19 |
Family
ID=71226990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020809344.8U Active CN210806865U (en) | 2020-05-15 | 2020-05-15 | Stator for external rotor fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210806865U (en) |
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2020
- 2020-05-15 CN CN202020809344.8U patent/CN210806865U/en active Active
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