CN218829389U - High-speed motor capable of being concentrically mounted by multiple bearings - Google Patents
High-speed motor capable of being concentrically mounted by multiple bearings Download PDFInfo
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- CN218829389U CN218829389U CN202223223106.7U CN202223223106U CN218829389U CN 218829389 U CN218829389 U CN 218829389U CN 202223223106 U CN202223223106 U CN 202223223106U CN 218829389 U CN218829389 U CN 218829389U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The utility model discloses a high-speed motor capable of being concentrically installed by multiple bearings, which comprises a shell, an inner shell and an outer shell, wherein a first bearing installation seat is integrally formed at one end of the inner shell and is provided with a bearing installation groove for accommodating a first bearing; the prepressing bearing mounting seat is internally provided with a second bearing, a prepressing spring and a clamp spring in a bearing mounting hole; an annular boss is arranged in the first bearing mounting seat and along the axial upper end of the bearing mounting groove; the same inner diameter of the bearing mounting groove and the same inner diameter of the bearing mounting hole are both D 4 The stator having an inner diameter D 2 The outer diameter of the bearing is D 1 The inner diameter of the annular boss is D 3 The method comprises the following steps: d 1 Is equal to D 4 ，D 3 Less than or equal to D 2 And D is 1 、D 4 Greater than or equal to D 2 . The utility model discloses can realize the concentric location of two bearings, guarantee two bearing concentricity of rotor subassembly, the atress distributes and is in between two bearings, makes the motor still can the steady operation under super high rotational speed, reaches better quality and higher life.
Description
Technical Field
The utility model relates to a but high-speed motor of concentric installation of multiaxis bearing, especially small-size or miniature high-speed motor, especially are applicable to the small-size or miniature high-speed brushless motor of hair-dryer.
Background
High speed blowers are currently being pursued by more and more consumers, and thus the demand for high speed motors as a power part of high speed blowers is also increasing. A high-speed motor for a hair dryer is required to have: the requirements of miniaturization, high speed and low noise, etc., wherein how to realize the stability and prolong the service life of the motor at high rotation speed, is one of the problems that need to be continuously discussed in the technology.
The structure of the traditional motor mainly comprises a stator assembly, a rotor assembly and bearings which are respectively positioned at two ends of a rotor magnet; this structure and mounting method are not problematic in the case of low rotation speed, large bearing and large torque, but if a small precision bearing is required in a small motor or a micro motor, especially in the case of a rotation speed exceeding 5 rpm, the above-mentioned mounting method of the conventional structure cannot meet the requirement, and the bearings at both ends of the motor rotor cannot be concentrically positioned and mounted. In view of this, utility model application with application number 202222647493.0 has proposed a solution that can conveniently process, and can guarantee the bearing concentricity, but in order to guarantee bearing concentricity installation in this scheme, need customize the bearing of processing with traditional standard external diameter difference again, has increased the cost of product, is unfavorable for popularizing and applying.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high-speed motor that can the concentric installation of multiaxis bearing can enough realize the concentric installation of small-size or miniature high-speed motor both ends bearing high accuracy, can avoid the problem of the needs customization processing bearing very much that mention among the prior art simultaneously.
The utility model discloses the technical scheme who adopts as follows: a multi-bearing concentrically mountable high speed electric machine comprising:
the shell is divided into an inner shell and an outer shell, a plurality of flow guide reinforcing ribs are arranged between the inner shell and the outer shell, so that the whole shell is of a cylindrical structure with an air channel, a first bearing mounting seat is integrally formed at one end of the inner shell, and the first bearing mounting seat is provided with a bearing mounting groove for accommodating a first bearing of the rotor assembly;
the prepressing bearing mounting seat is of an annular structure with an outer edge and bearing mounting holes, and a plurality of second threading holes are distributed in the outer edge; the bearing mounting hole of the prepressing bearing mounting seat is used for accommodating a second bearing of the rotor assembly, a prepressing spring and a clamp spring;
the method is characterized in that: the first bearing mounting seat is internally provided with an annular boss along the axial upper end of the bearing mounting groove.
Wherein, the same inner diameter of the bearing mounting groove and the inner diameter of the bearing mounting hole are both D 4 Inner diameter of stator D 2 The outer diameter of the bearing is D 1 The inner diameter of the annular boss is D 3 Then, there are: d 1 Is equal to D 4 ，D 3 Is less than or equal to D 2 And D is 1 、D 4 Greater than or equal to D 2 。
Preferably, D is 1 、D 4 Greater than D 2 ，D 3 Is equal to D 2 。
The outer edge of the pre-pressing bearing mounting seat is connected with the inner shell in a clamped mode to achieve pre-fixing, and after the pre-pressing bearing mounting seat and the first bearing mounting seat determine concentricity, the pre-pressing bearing mounting seat and the first bearing mounting seat are bonded or welded and fixed.
Preferably, the high-speed motor further includes: stator wiring cover: the stator wiring cover is an annular structure with a through hole in the center, and a plurality of first wiring holes are distributed on the upper end face of the stator wiring cover; the outer diameter of the stator wiring cover is consistent with the inner diameter of the inner shell, and the stator rubber coating are connected with the stator wiring cover;
the high-speed motor further comprises a wiring structure, wherein the wiring structure comprises a circuit board, a wiring seat, a wiring terminal bracket and a connecting wire.
The high-speed motor further comprises an impeller which is arranged at one end close to the first bearing mounting seat and connected with the rotating shaft output end of the rotor assembly.
The utility model discloses a but high-speed motor of concentric installation of multiaxis bearing, its advantage and efficiency lie in: the utility model can ensure the concentricity of the two bearings of the rotor component, and the stress distribution is between the two bearings, thereby achieving the stable work of the motor under the ultrahigh rotating speed, and leading the whole motor to achieve better quality and longer service life; meanwhile, the boss is arranged on the periphery of the bearing mounting groove of the first bearing mounting seat, so that the first bearing can be positioned when the bearing mounting seat is mounted; the concentric positioning of the two bearings can be achieved by an auxiliary jig bar.
Drawings
FIG. 1 is a sectional view of a high-speed motor according to embodiment 1 of the present invention
Figure 2 is an explosion diagram of a high-speed motor structure in embodiment 1 of the present invention
FIG. 3 is a schematic view of a partial structure of a first bearing mounting seat in the prior art
FIG. 4 is a schematic view of a local structure of a first bearing mounting seat in embodiment 1 of the present invention
FIG. 5 is a cross-sectional view of the structure of embodiment 2 of the present invention
The numbers in the figures are as follows:
1-housing 11-inner housing 12-outer housing
13-reinforcing rib 111-first bearing mounting seat
1111-bearing mounting groove 1112-annular boss
2-rotor assembly 21-first bearing 22-second bearing
3-wiring structure 4-stator wiring cover 41-through hole
42-first threading hole 5-stator 6-prepressing bearing mounting seat
61-outer edge 62-bearing mounting hole
7-prepressing spring 8-impeller 9-snap spring
10-jig bar S-step
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The structure of the present invention will be further described with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1 and 2, the utility model discloses a but high-speed motor of concentric installation of multiaxis bearing, include:
the rotor assembly comprises a shell 1, wherein the shell is divided into an inner shell 11 and an outer shell 12, a plurality of flow guide reinforcing ribs 13 are arranged between the inner shell and the outer shell, so that the whole shell is of a cylindrical structure with an air duct, a first bearing mounting seat 111 is integrally formed at one end of the inner shell, and the first bearing mounting seat is provided with a bearing mounting groove 1111 for accommodating a first bearing 21 of the rotor assembly 2;
the high-speed motor further comprises: the prepressing bearing mounting seat 6 is of an annular structure with an outer edge 61 and bearing mounting holes 62, a plurality of second threading holes (not shown) are distributed on the outer edge, and correspond to a plurality of first threading holes on the end face of the stator threading cover and are used for leading out motor wires; the bearing mounting hole of the prepressing bearing mounting seat is used for accommodating a second bearing 22 of the rotor assembly, a prepressing spring 7 and a clamp spring 9;
as shown in fig. 3, which is a schematic view of a partial structure of a first bearing installation seat in the background art, wherein a step S is disposed along a lower peripheral edge in a bearing installation groove of the first bearing installation seat, and is used for abutting against a bearing outer ring of a first bearing when being installed; or the bearing mounting groove is a through hole without any step or boss, and the first bearing is placed into the bearing mounting groove and then fixed with the bearing outer ring through dispensing during mounting. However, in this mounting method, the pre-pressed bearing mounting seat and the inner housing are fixed by a cylindrical jig rod having the same outer diameter as the inner diameter of the stator (also as the outer diameter of the bearing), and the first bearing mounting seat and the pre-pressed bearing mounting seat are concentric by adopting a bonding or welding method; then taking out the concentric jig bar, and then loading the concentric jig bar into a rotor assembly consisting of a rotating shaft, two bearings and a magnet; the outer diameter of the bearing is also the same as the inner diameter of the stator due to the limitation of the inner diameter of the stator in the mode, but the outer diameter and the inner diameter of the bearing are usually different in size in the industry and the market; therefore, in order to realize the installation mode, the bearing with the required size needs to be customized and processed, the cost and the production period of the product are increased, and the popularization and the application are not facilitated.
Therefore, the high-speed motor provided by the embodiment of the present application, as shown in fig. 1, 2 and 4, is provided with an annular boss 1112 in the first bearing installation seat 111 and along the axial upper end of the bearing installation groove 1111.
Wherein, the same inner diameter of the bearing mounting groove 1111 and the same inner diameter of the bearing mounting hole 62 are both D 4 The stator 5 has an inner diameter D 2 The outer diameters of the first bearing 21 and the second bearing 22 are both D 1 And the inner diameter of the annular boss 1112 is D 3 There may be: d 1 Is equal to D 4 ，D 3 Less than or equal to D 2 And D is 1 、D 4 Is greater than or equal to D 2 。
In the preferred embodiment, D is 1 、D 4 Greater than D 2 ，D 3 Is equal to D 2 。
Further, the high-speed motor of the present embodiment further includes: a wiring structure 3; comprises a circuit board, a wire holder, a wiring terminal bracket and a connecting wire;
stator wiring cover 4: the stator wiring cover is of an annular structure with a through hole 41 in the center, and a plurality of first wiring holes 42 are distributed on the upper end face of the stator wiring cover; the outer diameter of the stator wiring cover is consistent with the inner diameter of the inner shell, and the stator rubber coating are connected with the stator wiring cover.
An impeller 8; the first bearing mounting seat is arranged at one end close to the first bearing mounting seat and is connected with the rotating shaft output end of the rotor assembly.
The pre-pressing bearing installation seat 6 can be connected with the inner shell 11 in a clamping mode to achieve pre-fixing, and after the pre-pressing bearing installation seat 6 and the first bearing installation seat 111 determine concentricity, the pre-pressing bearing installation seat and the first bearing installation seat are bonded or welded and fixed.
Example 2
The high-speed motor capable of concentrically mounting multiple bearings comprises the following mounting process: firstly, a stator is arranged in a space in a motor inner shell, and then a stator wiring cover is connected with the stator wiring cover; the pre-pressed bearing mounting seat is clamped on the inner shell of the motor, and a concentric jig rod 10 (as shown in fig. 5) is inserted into the pre-pressed bearing mounting seat, the concentric jig rod is of an integrally formed two-section structure, and the upper section is formed by the outer diameter and the outer diameter of the bearing (namely D) 1 ) The same cylinder, the lower section is the stator with the outer diameter equal to the inner diameter of the stator (i.e. D) 2 ) Identical cylinders; then the outer edge of the prepressing bearing mounting seat is fixed with the inner shell by adopting a bonding or welding modeThe first bearing mounting seat and the prepressing bearing mounting seat are concentric; then taking out the concentric jig bar, and loading the concentric jig bar into a rotor assembly consisting of the rotating shaft, a second bearing (namely, one end far away from the impeller) and the magnet; a first bearing (namely, one end close to the impeller) is arranged in a first bearing mounting seat and is positioned through an annular boss; pressing a pre-pressing spring into a bearing mounting hole of the pre-pressing bearing mounting seat; the motor wire is physically and electrically connected with the circuit board through the first wire through hole, the second wire through hole, the wiring terminal bracket and the wiring holder; and finally, loading the impeller.
It should be noted that above-mentioned concentric tool stick 10 is optional auxiliary assembly, not for realizing the utility model discloses a necessary technological means, accessible laser or other concentric positioning system replace this concentric tool stick supplementary, realize that first bearing mount pad and pre-compaction bearing mount pad are concentric, and then realize the concentric installation of two bearings, make the motor still can stable work under super high rotational speed.
It should be noted that the high-speed motor provided by the utility model can be applied to the related fields of electric hair dryer, bladeless fan, negative pressure dust collector, hand drier, bathroom drying, etc.; the directional phrases referred to in this application, for example: up, down, left, right, front, rear, inner, outer, lateral, etc., are simply directions with reference to the drawings. Throughout the description of the present application, it is to be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically, electrically or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. Also, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the invention. However, without these technical details and with numerous changes and modifications of the above-described embodiments, it is possible to make and implement the invention without departing from the scope of protection defined by the claims of the present invention.
Claims (6)
1. A multi-bearing concentrically mountable high speed electric machine comprising:
the shell is divided into an inner shell and an outer shell, a plurality of flow guide reinforcing ribs are arranged between the inner shell and the outer shell, so that the whole shell is of a cylindrical structure with an air channel, a first bearing mounting seat is integrally formed at one end of the inner shell, and the first bearing mounting seat is provided with a bearing mounting groove for accommodating a first bearing of the rotor assembly;
the prepressing bearing mounting seat is of an annular structure with an outer edge and bearing mounting holes, and a plurality of second threading holes are distributed on the outer edge; the bearing mounting hole of the prepressing bearing mounting seat is used for accommodating a second bearing of the rotor assembly, a prepressing spring and a clamp spring;
the method is characterized in that: an annular boss is arranged in the first bearing mounting seat and along the axial upper end of the bearing mounting groove;
the same inner diameter of the bearing mounting groove and the same inner diameter of the bearing mounting hole are both D 4 Inner diameter of stator D 2 The outer diameter of the bearing is D 1 The inner diameter of the annular boss is D 3 Then, there are: d 1 Is equal to D 4 ，D 3 Less than or equal to D 2 And D is 1 、D 4 Greater than or equal to D 2 。
2. A multi-bearing concentrically mountable high speed electric machine as claimed in claim 1, wherein: said D 1 、D 4 Greater than D 2 ，D 3 Is equal to D 2 。
3. A multi-bearing concentrically mountable high speed electric machine according to claim 1 or 2, wherein: the outer edge of the pre-pressing bearing mounting seat is connected with the inner shell in a clamped mode to achieve pre-fixing, and after the pre-pressing bearing mounting seat and the first bearing mounting seat determine concentricity, the pre-pressing bearing mounting seat is bonded or welded and fixed.
4. A multi-bearing concentrically mountable high speed electric machine according to claim 1 or 2, wherein: the high-speed motor further comprises: stator wiring cover: the stator wiring cover is an annular structure with a through hole in the center, and a plurality of first wiring holes are distributed on the upper end face of the stator wiring cover; the outer diameter of the stator wiring cover is consistent with the inner diameter of the inner shell, and the stator rubber coating are connected with the stator wiring cover.
5. A multi-bearing concentrically mountable high speed electric machine according to claim 1 or 2, wherein: the high-speed motor further comprises a wiring structure, and the wiring structure comprises a circuit board, a wiring seat, a wiring terminal bracket and a connecting wire.
6. The multi-bearing concentrically mountable high-speed electric motor according to claim 1 or 2, wherein: the high-speed motor further comprises an impeller which is arranged at one end close to the first bearing mounting seat and connected with the rotating shaft output end of the rotor assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223223106.7U CN218829389U (en) | 2022-12-02 | 2022-12-02 | High-speed motor capable of being concentrically mounted by multiple bearings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223223106.7U CN218829389U (en) | 2022-12-02 | 2022-12-02 | High-speed motor capable of being concentrically mounted by multiple bearings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218829389U true CN218829389U (en) | 2023-04-07 |
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ID=87039844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223223106.7U Active CN218829389U (en) | 2022-12-02 | 2022-12-02 | High-speed motor capable of being concentrically mounted by multiple bearings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218829389U (en) |
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2022
- 2022-12-02 CN CN202223223106.7U patent/CN218829389U/en active Active
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