CN214626527U - Permanent magnet motor with integral injection molding type stator radial ring - Google Patents
Permanent magnet motor with integral injection molding type stator radial ring Download PDFInfo
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- CN214626527U CN214626527U CN202120788235.7U CN202120788235U CN214626527U CN 214626527 U CN214626527 U CN 214626527U CN 202120788235 U CN202120788235 U CN 202120788235U CN 214626527 U CN214626527 U CN 214626527U
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- fixing piece
- magnetic shoe
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- radial ring
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Abstract
The utility model discloses a permanent magnet motor with an integral injection molding type stator radial ring, which comprises a motor shell (1) and a magnetic shoe injection molding fixing piece (4); the magnetic shoe injection molding fixing piece (4) is a barrel body with a bottom surface and without a top surface, the motor shell (1) is an inverted barrel body with a top surface and without a bottom surface, a radial ring magnetic pole is arranged on the outer side wall of the barrel body of the magnetic shoe injection molding fixing piece (4), 2 electric brushes (5) which are mutually symmetrical are arranged in the inner cavity of the magnetic shoe injection molding fixing piece (4), and the magnetic shoe injection molding fixing piece (4) and the radial ring magnetic pole are sleeved in the motor shell (1); the rotor (2) is arranged in the inner cavity of the magnetic shoe injection molding fixing piece (4), the rotor (2) is positioned in the surrounding of a radial ring magnetic pole, the bottom of the motor shaft (7) is rotationally connected with the rotor fixing piece (6), and the top of the motor shaft (7) penetrates through a rotor positioning through hole in the motor shell (1) and then is positioned outside the motor shell (1).
Description
Technical Field
The utility model relates to a permanent-magnet machine field, concretely relates to permanent-magnet machine with whole formula stator radial ring of moulding plastics.
Background
The permanent magnet direct current motor is a direct current motor with an excitation magnetic field established by a permanent magnet, has the characteristics of small volume, high efficiency, less copper consumption, simple structure, reliable operation and the like besides the characteristics of drooping mechanical characteristics, linear adjustment characteristics, wide speed regulation range, convenience in control and the like of a common electric excitation direct current motor, and is widely applied to the fields of electric tools, electric automobiles, electric bicycles and the like.
At present, the permanent magnet direct current motor stator adopts a magnetic shoe pair, but a plurality of inconveniences are caused according to the current mode. In the installation process of the stator magnetic shoe pair, a motor manufacturer surrounds magnetic tiles (provided by a magnetic shoe supplier) into a ring shape along a rotor, and the magnetic tiles are fixedly spliced by glue water, so that the installation process not only influences the production efficiency of the motor, but also increases the production cost of the motor; and in order to ensure the magnetic force effect, the side edges of the magnetic shoes must be provided with chamfers, which causes the complex processing technology of the magnetic shoes and also influences the consistency of the magnetic shoes. That is, the conventional magnetic shoes are installed in pairs in the motor housing, and for the convenience of installation and fixation, the peripheral edges must be chamfered by grinding. However, the chamfered part of the magnetic shoe is thin, and the magnetic shoe is easy to break and fall scraps in the transportation and installation processes, so that the performance of the motor is affected. And the above scheme also causes the mechanical noise of the permanent magnet direct current motor to be large.
SUMMERY OF THE UTILITY MODEL
The to-be-solved problem of the utility model is to provide a permanent-magnet machine who has whole injection moulding formula stator radial ring convenient to processing, and can the noise reduction.
In order to solve the technical problem, the utility model provides a permanent magnet motor with an integral injection molding type stator radial ring, which comprises a motor shell, an electric brush, a rotor fixed on a motor shaft, a radial ring magnetic pole consisting of magnetic shoes with even number, and a magnetic shoe injection molding fixing part;
the magnetic shoe injection molding fixing piece is a drum body with a bottom surface and without a top surface, the motor shell is an inverted drum body with a top surface and without a bottom surface, and a rotor positioning through hole is formed in the top of the motor shell;
the outer side wall of the barrel body of the magnetic shoe injection molding fixing piece is provided with a radial ring magnetic pole, 2 electric brushes which are mutually symmetrical are arranged in the inner cavity of the magnetic shoe injection molding fixing piece, and a rotor fixing piece is arranged at the center of the barrel bottom of the magnetic shoe injection molding fixing piece;
the magnetic shoe injection molding fixing piece and the radial ring magnetic pole are sleeved in the motor shell;
the rotor is arranged in the inner cavity of the magnetic shoe injection molding fixing piece and is surrounded by the radial ring magnetic poles, the bottom of the motor shaft is rotationally connected with the rotor fixing piece, and the top of the motor shaft penetrates through the rotor positioning through hole on the motor shell and then is positioned outside the motor shell;
the magnetic shoe injection molding fixing piece, the motor shell and the shaft axis of the motor shaft are coincided.
As the utility model discloses a permanent-magnet machine's improvement with radial ring of whole injection moulding formula stator:
the radial ring magnetic pole is positioned above the electric brush; i.e. the radial ring poles are higher than the brushes.
As the utility model discloses a permanent-magnet machine's with radial ring of whole injection molding formula stator further improvement:
auxiliary magnetic poles are arranged on the outer side wall of the barrel body of the magnetic shoe injection molding fixing piece and are uniformly positioned among the magnetic shoes;
as the utility model discloses a permanent-magnet machine's with radial ring of whole injection molding formula stator further improvement:
the inner side wall of the barrel body of the magnetic shoe injection molding fixing piece is provided with a groove matched with the end part of the electric brush, and the electric brush is fixedly connected with the magnetic shoe injection molding fixing piece by utilizing the matching of the end part of the electric brush and the groove.
As the utility model discloses a permanent-magnet machine's with radial ring of whole injection molding formula stator further improvement:
the magnetic shoe injection molding fixing piece and the magnetic shoe form an integrated assembly.
The utility model has the following technical advantages:
1. the magnetic shoe injection molding fixing piece and the magnetic shoe form an integrated assembly, so that the whole permanent magnet motor is simple in tooling, and only the rotor needs to be placed in the inner cavity of the magnetic shoe injection molding fixing piece, and then the magnetic shoe injection molding fixing piece is sleeved in the motor shell; and the upper end and the lower end of the motor shaft are matched with the rotor positioning through hole and the rotor fixing piece.
2. Because the magnetic shoe and the magnetic shoe injection molding fixing piece are integrated through injection molding (integrated through high-temperature melting injection molding materials), the side face of the magnetic shoe does not need to be ground to form a chamfer.
The reason is that: during injection molding, all the edges around the magnetic shoe are wrapped in an injection molding material, and the edges around the magnetic shoe do not need to be ground to form chamfers any more; therefore, the production procedures can be greatly reduced, and the production efficiency is improved; and effectively avoids the inconsistency of the magnetic tiles.
Of course, the inner and outer surfaces of the magnetic shoe still need to be ground in a conventional manner.
3. Magnetic shoe manufacturing enterprises only need to select proper magnetic shoes (including logarithm, length, thickness and the like) according to requirements of customers, and can realize that the magnetic shoe injection molding fixing piece and the magnetic shoe form an integrated assembly by adopting a conventional integral injection molding production process.
The integral injection molding process can ensure the quality of the motor tool and effectively reduce the electromagnetic noise and the mechanical noise of the permanent magnet motor.
To sum up, in order to improve the uniformity of magnetic shoe, improve the efficiency of magnetic shoe production and motor assembly, reduce the cost of magnetic shoe production and motor assembly and permanent-magnet machine's machinery and electromagnetic noise, the utility model provides a directly mould plastics into the integration with magnetic shoe, magnetic shoe fixing part etc. of moulding plastics to the mode production of standard component.
Drawings
The following describes the present invention in further detail with reference to the accompanying drawings.
FIG. 1 is an exploded view of a permanent magnet machine with an integrally injection molded single pair stator radial ring;
FIG. 2 is an enlarged schematic view of FIG. 1 taken in cross section and viewed from above;
FIG. 3 is an exploded view of a permanent magnet machine with an integrally injection molded single pair stator radial ring of auxiliary poles;
FIG. 4 is an enlarged schematic view taken from above in FIG. 3;
figure 5 is an exploded view of a permanent magnet machine with integral injection molded multi-pair stage stator radial rings;
fig. 6 is an enlarged schematic view of fig. 5 taken in a plan view.
Detailed Description
The invention will be further described with reference to specific examples, but the scope of protection of the invention is not limited thereto:
the radial ring magnetic pole is composed of an even number of magnetic tiles 3, that is, the magnetic tiles 3 are arranged in pairs, for example, a single pair, two pairs, three pairs (the number of the corresponding magnetic tiles 3 is 2, 4, 6, etc.), and the number of the magnetic tiles 3 can be adjusted according to actual requirements, which is a conventional technology.
The following case, which is specific to 1 pair of magnetic shoes 3 and 2 pair of magnetic shoes 3, further details the permanent magnet machine with an integrally injection molded stator radial ring.
Embodiment 1, a permanent magnet motor having an integral injection-molded stator (single-pole stator) radial ring, as shown in fig. 1 to 2, includes a motor housing 1, a rotor 2 fixed on a motor shaft 7, a magnetic shoe injection-molded fixing member 4, a magnetic shoe 3, an electric brush 5, and a rotor fixing piece 6;
the magnetic shoe injection molding fixing piece 4 is a barrel body, namely, the magnetic shoe injection molding fixing piece 4 has a bottom surface without a top surface, and the motor shell 1 is an inverted barrel body, namely, the motor shell 1 has a top surface without a bottom surface;
a radial ring magnetic pole is arranged on the outer side wall of the barrel body of the magnetic shoe injection molding fixing part 4, namely, the magnetic shoe 3 is fixed on the outer side wall of the barrel body of the magnetic shoe injection molding fixing part 4; the inner cavity of the magnetic shoe injection molding fixing piece 4 is provided with 2 electric brushes 5 which are symmetrical with each other, specifically: the inner side wall of the barrel body of the magnetic shoe injection molding fixing piece 4 is provided with a groove matched with the end part of the electric brush 5, and the end part of the electric brush 5 is matched with the groove, so that the electric brush 5 is fixedly connected with the magnetic shoe injection molding fixing piece 4.
And a rotor fixing piece 6 is arranged at the center of the bottom of the magnetic shoe injection molding fixing piece 4.
The magnetic shoe injection molding fixing piece 4 and the radial ring magnetic pole are sleeved in the motor shell 1, and a rotor positioning through hole is arranged at the top of the motor shell 1 (the conventional technology).
The rotor 2 fixed on the motor shaft 7 is placed in the inner cavity of the magnetic shoe injection molding fixing piece 4, and the rotor 2 is in the surrounding of the radial ring magnetic pole. The bottom of the motor shaft 7 is rotationally connected with the rotor fixing plate 6; the top of the motor shaft 7 passes through the rotor positioning through hole on the motor shell 1 and then is positioned outside the motor shell 1. Generally, the radial ring poles are located above the brushes 5, i.e., the radial ring poles are higher in height than the brushes 5. The magnetic shoe injection molding fixing piece 4, the motor shell 1 and the motor shaft 7 are overlapped with each other in axial lead.
The magnetic shoe injection molding fixing piece 4 and the magnetic shoe 3 are integrated components and can be integrated by using injection molding materials melted at high temperature.
The magnetic shoe injection molding fixing piece 4 and the magnetic shoe 3 are integrated, so that the actual installation is very convenient, and the rotor 2 only needs to be placed in the inner cavity of the magnetic shoe injection molding fixing piece 4, so that the bottom of the motor shaft 7 is rotationally connected with the rotor fixing piece 6; and then the motor shell 1 is sleeved on the periphery of the magnetic shoe injection molding fixing piece 4 with the radial ring magnetic pole, and the top of the motor shaft 7 passes through a rotor positioning through hole on the motor shell 1 and then is positioned outside the motor shell 1. And then the motor shell 1 and the magnetic shoe injection molding fixing piece 4 are fixed, for example, the fixing can be carried out in a conventional form such as a buckle. The brush 5 is in contact with the motor shaft 7.
During actual use, the top of the motor shaft 7 is externally connected with a workpiece needing to rotate, external current (exciting current) is added to the rotor 2 through the electric brush 5 (input current), and a coil of the rotor 2 is electrified to become an electromagnet, so that the electromagnet rotates under the action of magnetic force of a radial ring magnetic pole formed by the magnetic shoes 3, and finally the externally connected workpiece is driven to rotate correspondingly.
Example 3 a permanent magnet machine with an integral injection-moulded stator (2-pole stator) radial ring, as described in figures 5 to 6, differs from example 1 in that: the radial ring magnetic pole is composed of 2 pairs of magnetic shoes 3. The rest of the same is the same as in example 1.
Finally, it is also noted that the above-mentioned list is only a few specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and many modifications are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the invention should be considered as within the scope of the invention.
Claims (5)
1. Permanent-magnet machine with radial ring of whole injection moulding formula stator, including motor housing (1), brush (5), fix rotor (2) on motor shaft (7), the radial ring magnetic pole of constituteing by even magnetic shoe (3) of quantity, characterized by: the magnetic shoe injection molding fixing piece (4) is further included;
the magnetic shoe injection molding fixing piece (4) is a barrel body with a bottom surface and without a top surface, the motor shell (1) is an inverted barrel body with a top surface and without a bottom surface, and a rotor positioning through hole is formed in the top of the motor shell (1);
the outer side wall of the barrel body of the magnetic shoe injection molding fixing piece (4) is provided with a radial ring magnetic pole, 2 electric brushes (5) which are mutually symmetrical are arranged in the inner cavity of the magnetic shoe injection molding fixing piece (4), and a rotor fixing piece (6) is arranged at the center of the bottom of the magnetic shoe injection molding fixing piece (4);
the magnetic shoe injection molding fixing piece (4) and the radial ring magnetic pole are sleeved in the motor shell (1);
the rotor (2) is arranged in the inner cavity of the magnetic shoe injection molding fixing piece (4), the rotor (2) is positioned in the surrounding of a radial ring magnetic pole, the bottom of the motor shaft (7) is rotationally connected with the rotor fixing piece (6), and the top of the motor shaft (7) penetrates through a rotor positioning through hole in the motor shell (1) and then is positioned outside the motor shell (1);
the magnetic shoe injection molding fixing piece (4), the motor shell (1) and the shaft axis of the motor shaft (7) are coincided.
2. The permanent magnet electric machine with integral injection molded stator radial ring of claim 1 wherein:
the radial ring magnetic pole is positioned above the electric brush (5).
3. A pm machine with an integral injection moulded stator radial ring as claimed in claim 1 or 2, characterized in that:
and auxiliary magnetic poles (8) are arranged on the outer side wall of the barrel body of the magnetic shoe injection molding fixing piece (4), and the auxiliary magnetic poles (8) are uniformly arranged between the magnetic shoes (3).
4. A pm machine with an integral injection moulded stator radial ring as claimed in claim 1 or 2, characterized in that:
the inner side wall of the barrel body of the magnetic shoe injection molding fixing piece (4) is provided with a groove matched with the end part of the electric brush (5), and the electric brush (5) is fixedly connected with the magnetic shoe injection molding fixing piece (4) by matching the end part of the electric brush (5) with the groove.
5. A pm machine with an integral injection moulded stator radial ring as claimed in claim 1 or 2, characterized in that: the magnetic shoe injection molding fixing piece (4) and the magnetic shoe (3) form an integrated assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120788235.7U CN214626527U (en) | 2021-04-18 | 2021-04-18 | Permanent magnet motor with integral injection molding type stator radial ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120788235.7U CN214626527U (en) | 2021-04-18 | 2021-04-18 | Permanent magnet motor with integral injection molding type stator radial ring |
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| Publication Number | Publication Date |
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| CN214626527U true CN214626527U (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120788235.7U Active CN214626527U (en) | 2021-04-18 | 2021-04-18 | Permanent magnet motor with integral injection molding type stator radial ring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114337001A (en) * | 2021-12-31 | 2022-04-12 | 杭州东博自动化科技有限公司 | Miniature motor and stator module thereof |
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2021
- 2021-04-18 CN CN202120788235.7U patent/CN214626527U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114337001A (en) * | 2021-12-31 | 2022-04-12 | 杭州东博自动化科技有限公司 | Miniature motor and stator module thereof |
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