CN220087029U - Brushless motor and exhaust fan with same - Google Patents
Brushless motor and exhaust fan with same Download PDFInfo
- Publication number
- CN220087029U CN220087029U CN202321660964.XU CN202321660964U CN220087029U CN 220087029 U CN220087029 U CN 220087029U CN 202321660964 U CN202321660964 U CN 202321660964U CN 220087029 U CN220087029 U CN 220087029U
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- base
- shell
- brushless motor
- rotating shaft
- bearing
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- 238000004804 winding Methods 0.000 claims abstract description 23
- 239000011248 coating agent Substances 0.000 claims abstract description 16
- 238000000576 coating method Methods 0.000 claims abstract description 16
- 230000000149 penetrating effect Effects 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 5
- 230000009467 reduction Effects 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 description 5
- 230000013011 mating Effects 0.000 description 5
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241000883990 Flabellum Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000006233 lamp black Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Motor Or Generator Frames (AREA)
Abstract
The utility model discloses a brushless motor and an exhaust fan with the same, and relates to the technical field of brushless motors, and the brushless motor comprises a base and a shell which are mutually enclosed to form a containing cavity, wherein a coating skirt which is covered on the end part of the base is arranged on the shell, the coating skirt comprises a covering part and an extending part, the inner diameter of the covering part is larger than the outer diameter of the base, and the radial outer side wall of the extending part is a conical table surface so that the shell is coated on the base; the stator winding is fixedly installed on the base, the magnetic ring covered on the stator winding is arranged on the inner wall of the shell, the fixedly connected rotating shaft is arranged in the shell in a penetrating manner, the rotating shaft is rotatably connected with the base, the bearing matched with the rotating shaft is arranged in the base, the shell rotates relative to the base, the shell is not fixedly connected with the base, the structure is simplified, the weight is reduced, the process is simplified, and the cost and the efficiency are reduced. The shell is coated at the end part of the base through the coating skirt, so that foreign matters are prevented from invading the inside of the motor, and the protection performance is ensured. The brushless motor is arranged, so that cost reduction and synergy can be realized.
Description
Technical Field
The utility model relates to the technical field of brushless motors, in particular to a brushless motor and an exhaust fan with the same.
Background
The exhaust fan is a common household appliance in daily life and is used for rapidly exhausting gases such as indoor lampblack, and most of the exhaust fan uses a low-power brushless motor, but for fan blades with larger use angles or blades with larger sizes, the driving power is often insufficient, the size and the weight of the motor can be excessively increased after the power are increased, the structure is also not brief, the production and assembly processes are complex, and the cost reduction and the efficiency improvement are not facilitated.
Disclosure of Invention
The utility model aims to at least solve one of the technical problems in the prior art, and provides a brushless motor and an exhaust fan with the brushless motor, which simplify the structure and the assembly process and realize cost reduction and synergy.
According to an embodiment of the first aspect of the present utility model, there is provided a brushless motor including:
the base and the shell enclose each other to form a containing cavity, a coating skirt covering the end part of the base is arranged on the shell, the coating skirt comprises a covering part and an extension part, the inner diameter of the covering part is larger than the outer diameter of the base, and the radial outer side wall of the extension part is a conical table surface; the stator winding is fixedly installed on the base, the magnetic ring covered on the stator winding is arranged on the inner wall of the shell, the fixedly connected rotating shaft is penetrated in the shell and is rotatably connected with the base, the bearing matched with the rotating shaft is arranged in the base, and the shell rotates relative to the base.
The brushless motor of the first aspect of the utility model has at least the following advantages: the embodiment is provided with a base and a shell which mutually enclose a containing cavity, a coating skirt covering the end part of the base is arranged on the shell, the coating skirt comprises a covering part and an extending part, the inner diameter of the covering part is larger than the outer diameter of the base, and the radial outer side wall of the extending part is a conical table surface so that the shell is coated on the base; the stator winding is fixedly installed on the base, the magnetic ring covered on the stator winding is arranged on the inner wall of the shell, the fixedly connected rotating shaft is arranged in the shell in a penetrating manner, the rotating shaft is rotatably connected with the base, the bearing matched with the rotating shaft is arranged in the base, the shell rotates relative to the base, the shell is not fixedly connected with the base, the structure is simplified, the weight is reduced, the process is simplified, and the cost and the efficiency are reduced. The shell is coated at the end part of the base through the coating skirt, so that foreign matters are prevented from invading the inside of the motor, and the protection performance is ensured.
According to the brushless motor of the first aspect of the utility model, the base is provided with the mounting tube, the stator winding is fixedly sleeved on the outer wall of the mounting tube, and the rotating shaft is rotatably connected with the mounting tube.
According to the brushless motor of the first aspect of the utility model, the mounting tube has the fitting hole penetrating through both ends, the bearing is fitted in the fitting hole, and the fitting hole is provided with the stopper portion abutting against the end portion of the bearing.
According to the brushless motor of the first aspect of the utility model, the bearing is an oilless bearing, and the inner wall of the rotating shaft is provided with the accommodating groove.
According to the brushless motor of the first aspect of the utility model, one end of the stator winding is provided with the circuit board, and the circuit board is fixedly connected with the stator winding.
According to the brushless motor of the first aspect of the utility model, the end part of the housing is provided with the matching part for penetrating the rotating shaft, the matching part extends for a preset length along the axial direction of the housing, and the matching part is fixedly connected with the rotating shaft.
According to the brushless motor of the first aspect of the utility model, the gasket is arranged between the matching part and the bearing, so that friction between the matching part and the bearing is avoided.
According to the brushless motor of the first aspect of the utility model, the end, far away from the shell, of the base is provided with the mounting part protruding along the axial direction, the mounting part is provided with the fixing column, and the fixing column is embedded with the threaded sleeve.
According to the brushless motor of the first aspect of the utility model, the mounting part is provided with the reinforcing ribs, and two ends of each reinforcing rib are connected with the fixing column and the outer wall of the base.
The exhaust fan of the second aspect of the utility model has at least the following advantages: the exhaust fan of this embodiment is equipped with foretell brushless motor, does benefit to the simplification structure and reduces weight, and then reduces the moment of inertia of flabellum, improves exhaust efficiency, does benefit to energy-conservation, simplifies the installation technique simultaneously, realizes reducing the cost and increasing efficiency.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The utility model is further described below with reference to the drawings and examples;
fig. 1 is a side view of a brushless motor in an embodiment of a first aspect of the utility model;
fig. 2 is a cross-sectional view of a brushless motor in an embodiment of the first aspect of the utility model;
fig. 3 is a bottom isometric view of a brushless motor in an example of the first aspect of the utility model.
Reference numerals:
a base 100; a mounting tube 101; a mating hole 102; a bearing 103; a mounting portion 104; a fixed column 105; a threaded sleeve 106; stator windings 107; a wiring board 108; a stopper 109;
a housing 110; a coating skirt 111; a cover 112; an extension 113; a fitting portion 114; a rotation shaft 115; a gasket 116; a clamp spring 117; a magnetic ring 118; a limit table 119; a reinforcing rib 120; a receiving groove 121; a wire 122; and a wire outlet hole 123.
Detailed Description
Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.
In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1 to 3, an embodiment of the first aspect of the present utility model provides a brushless motor, including a base 100 and a housing 110 enclosing a receiving cavity, the housing 110 is rotatably connected with the base, the base 100 and the housing 110 are both cylindrical, a coating skirt 111 covering an end of the base 100 is provided on the housing 110, the coating skirt 111 includes a coating portion 112 and an extension portion 113, an inner diameter of the coating portion 112 is larger than an outer diameter of the base 100, and a radially outer side wall of the extension portion 113 is a conical table surface, so that the housing 110 is coated on the base 100; the stator winding 107 is fixedly installed on the base 100, the magnetic ring 118 covering the stator winding 107 is arranged on the inner wall of the shell 110, the fixedly connected rotating shaft 115 is penetrated in the shell 110, the rotating shaft 115 is rotatably connected with the base 100, the bearing 103 matched with the rotating shaft 115 is arranged in the base 100, the shell 110 rotates relative to the base 100, and the shell 110 is not fixedly connected with the base 100, so that the structure is simplified, the weight is further reduced, the process is simplified, and the cost and the efficiency are further reduced. The casing 110 is coated on the end of the base 100 through the coating skirt 111, so that foreign matters can be prevented from invading the inside of the motor, and the protection performance is ensured.
Specifically, referring to fig. 2, a mounting tube 101 is provided on the base 100, the mounting tube 101 extends in a direction toward the housing 110, the stator winding 107 is fixedly sleeved on an outer wall of the mounting tube 101, and the rotating shaft 115 is rotatably connected to the mounting tube 101. Meanwhile, the mounting tube 101 is internally provided with a matching hole 102 penetrating through two ends, the bearing 103 is embedded in the matching hole 102, a stop part 109 abutting against the end part of the bearing 103 is arranged in the matching hole 102, preferably, the bearing 103 and the matching hole 102 are in transition fit, so that the bearing 103 can be stably mounted while the mounting is facilitated. Optionally, the oil-free bearing 103 is selected as the bearing 103, which is conducive to simplifying the structure, reducing the weight and saving the space, and realizing maintenance-free, and the inner wall of the rotating shaft 115 is provided with the accommodating groove 121, so that the accommodating groove 121 is recessed along the radial direction of the bearing 103 by a preset depth, thereby being convenient for reducing the abrasion area during installation, and reducing the installation resistance while guaranteeing the supportability of the contact surface. Optionally, one end of the stator winding 107 is provided with a circuit board 108, the circuit board 108 is fixedly connected with the stator winding 107, the circuit board 108 is located on one side, close to the base 100, of the stator winding 107, and the circuit board 108 is fixed on the stator winding 107 and can be directly inserted into the base 100 after the stator winding 107 is assembled, so that the installation steps are simplified, and the production efficiency is improved.
Optionally, the end of the housing 110 is provided with a mating portion 114 for penetrating the rotating shaft 115, and the mating portion 114 extends along the axial direction of the housing 110 by a preset length toward two ends, and the mating portion 114 is fixedly connected with the rotating shaft 115, so as to facilitate the connection stability between the rotating shaft 115 and the housing 110. Optionally, a washer 116 is provided between one end of the mating portion 114 and the bearing 103, which facilitates avoiding friction between the housing 110 and the bearing 103 and enables axial positioning.
Optionally, the outer wall diameter of the housing 110 is smaller than the inner wall diameter of the base 100, compressing the outer diameter of the housing 110 helps to reduce the moment of inertia of the housing 110, thereby improving the efficiency of start-up and exhaust.
Optionally, the end of the base 100 far away from the housing 110 is provided with a mounting portion 104 protruding along the axial direction, the mounting portion 104 is provided with a fixing column 105, the fixing column 105 is embedded with a threaded sleeve 106, and the threaded sleeve 106 is used for mounting the base 100. Optionally, two mounting portions 104 are provided, and two mounting portions 104 are arranged on two sides of the base 100 at intervals, and meanwhile, reinforcing ribs 120 are arranged in the mounting portions 104, and two ends of each reinforcing rib 120 are connected with the fixing column 105 and the outer wall of the base 100, so that the weight is reduced while the connection strength is increased.
An embodiment of the second aspect of the present utility model provides an exhaust fan, provided with the brushless motor, which can simplify the structure and reduce the weight, further reduce the rotational inertia of the fan blade, improve the exhaust efficiency, facilitate energy saving, simplify the installation process, and realize cost reduction and efficiency improvement.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A brushless motor, comprising:
the base and the shell enclose each other to form a containing cavity, a coating skirt covering the end part of the base is arranged on the shell, the coating skirt comprises a covering part and an extending part, the inner diameter of the covering part is larger than the outer diameter of the base, and the radial outer side wall of the extending part is a conical table surface; the stator winding is fixedly mounted on the base, a magnetic ring covering the stator winding is arranged on the inner wall of the shell, a fixedly connected rotating shaft is arranged in the shell in a penetrating manner, the rotating shaft is rotatably connected with the base, a bearing matched with the rotating shaft is arranged in the base, and the shell rotates relative to the base.
2. A brushless motor as claimed in claim 1, wherein: the stator winding is fixedly sleeved on the outer wall of the mounting tube, and the rotating shaft is rotatably connected with the mounting tube.
3. A brushless motor as claimed in claim 2, wherein: the mounting tube is provided with a matching hole penetrating through two ends, the bearing is embedded in the matching hole, and a stop part abutting against the end part of the bearing is arranged in the matching hole.
4. A brushless motor as claimed in claim 3, wherein: the bearing is an oilless bearing, and the inner wall of the rotating shaft is provided with a containing groove.
5. A brushless motor as claimed in claim 1, wherein: one end of the stator winding is provided with a circuit board which is fixedly connected with the stator winding.
6. A brushless motor as claimed in claim 1, wherein: the end of the shell is provided with a matching part used for penetrating the rotating shaft, the matching part extends for a preset length along the axial direction of the shell, and the matching part is fixedly connected with the rotating shaft.
7. A brushless motor as claimed in claim 6, wherein: and a gasket is arranged between the matching part and the bearing so as to prevent friction between the matching part and the bearing.
8. A brushless motor as claimed in claim 1, wherein: the end, far away from the shell, of the base is provided with an installation part protruding along the axial direction, the installation part is provided with a fixing column, and the fixing column is embedded with a thread bush.
9. A brushless motor as claimed in claim 8, wherein: the mounting part is provided with a reinforcing rib, and two ends of the reinforcing rib are connected with the fixing column and the outer wall of the base.
10. An exhaust fan comprising a brushless motor as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321660964.XU CN220087029U (en) | 2023-06-27 | 2023-06-27 | Brushless motor and exhaust fan with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321660964.XU CN220087029U (en) | 2023-06-27 | 2023-06-27 | Brushless motor and exhaust fan with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220087029U true CN220087029U (en) | 2023-11-24 |
Family
ID=88819271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321660964.XU Active CN220087029U (en) | 2023-06-27 | 2023-06-27 | Brushless motor and exhaust fan with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220087029U (en) |
-
2023
- 2023-06-27 CN CN202321660964.XU patent/CN220087029U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |