A magnetic levitation motor frame

Abstract

The utility model discloses a kind of magnetic suspension motor frames, including frame body, it includes integrally formed magnet mounting seat, coil mounting seat and swing piece, swing piece is located the both sides position between magnet mounting seat and coil mounting seat;Magnet assembly, it is installed in magnet mounting seat, and it includes magnetically conductive unit and magnet which are sequentially arranged by magnet mounting seat to coil mounting seat direction;Coil assembly, it is installed in coil mounting seat, and it includes magnetically conductive core body, skeleton arranged on magnetically conductive core body and coil mounted on skeleton, magnetically conductive core body includes split setting magnetically conductive main body and magnetically conductive insert, skeleton is installed on magnetically conductive insert, one end of magnetically conductive main body close to magnet is provided with the extension section extending setting to magnetically conductive insert, and extension section is opposite to magnet.The utility model structure design is reasonable, by setting split magnetically conductive core body and magnetically conductive insert, and magnetically conductive core body is provided with extension section, so that magnetic performance can be optimized and promoted and more convenient for the assembly of coil assembly.

Description

Technical Field

[0001] This utility model relates to the field of electric drive components technology, and more specifically, to a magnetic levitation motor frame. Background Technology

[0002] Chinese patent CN203156796U discloses a magnetic levitation motor frame for an electric shaver, comprising magnets and coils arranged opposite each other with a gap. The magnets and coils are respectively provided with magnet mounting seats and coil mounting seats. Oscillating plates are arranged on both sides of the coils and magnets, between the magnet mounting seats and coil mounting seats. A coil slide is provided on the coil mounting seat, which slides and engages with the coil mounting seat. One side of the coil slide is the mounting surface of the coil, and the other side is the bottom surface. A slider is provided on the circumference of the coil slide near the bottom surface. A longitudinal groove adapted to the shape of the slider is provided on the coil mounting seat. During operation, the coil is energized, causing the magnets to oscillate, which in turn drives the magnet mounting seats to oscillate. As the magnet mounting seats oscillate, the shaver holder above can perform oscillating shaving.

[0003] The above technical solution has the following drawbacks: the magnetic properties of the magnet need to be optimized and the coil assembly is relatively inconvenient. Utility Model Content

[0004] This invention overcomes the shortcomings of the prior art. Its structure is reasonably designed. By setting up a separate magnetic core and magnetic insert, and providing an extension section on the magnetic core, the magnetic performance is optimized and improved, and the assembly of the coil assembly is made easier.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A magnetic levitation motor frame, comprising: The frame includes an integrally formed magnet mounting base, a coil mounting base, and a swing plate, with the swing plate located on both sides between the magnet mounting base and the coil mounting base; A magnet assembly is mounted on a magnet mounting base and includes a magnetically conductive unit and a magnet arranged sequentially from the magnet mounting base toward the coil mounting base. A coil assembly is mounted on a coil mounting base and includes a magnetic core, a frame disposed on the magnetic core, and a coil mounted on the frame. The magnetic core includes a separate magnetic body and a magnetic insert. The frame is mounted on the magnetic insert. The magnetic body has an extension section extending towards the magnetic insert at one end near the magnet. The extension section is opposite to the magnet.

[0006] By adopting the above technical solution, an integrally injection-molded frame is used to increase the overall structural strength. Specifically, the oscillating plates are located on both sides of the magnet assembly and the coil assembly. The coil assembly includes a magnetic core, which can be made of silicon steel sheet, providing good support strength and magnetic conductivity. The magnetic core is arranged in separate parts. During installation, the coil is first mounted on the frame, then the frame is mounted on the magnetic insert, with the magnetic insert located in the middle of the magnetic core. Finally, the coil assembly is positioned and mounted onto the coil mounting base, facilitating installation. Furthermore, by providing extension sections on the magnetic core located on both sides of the magnetic insert, the coupling distance with the lateral movement of the magnet is shortened. In existing technologies, the lateral length of the magnet needs to span the upper center of both the magnetic core and the magnetic insert. This solution, with its extension sections, reduces the size of the magnet, decreases the overall mass of the magnet assembly, reduces the oscillation inertia of the magnet assembly, lowers production costs, and increases the oscillation frequency of the magnet assembly. Furthermore, the extension section constitutes a limit on the movement of the skeleton towards the magnet, that is, the extension section can limit the upward movement of the skeleton with the coil wound, thereby strengthening the limiting strength of the winding (i.e., the skeleton with the coil wound).

[0007] Preferably, a limiting structure is provided between the magnetic conductive body and the magnetic conductive insert to fix the magnetic conductive insert to the magnetic conductive body.

[0008] By adopting the above technical solution, since the extension section restricts the upward movement of the skeleton with the coil, after the coil is wound onto the skeleton and the skeleton is assembled onto the magnetic insert, the magnetic insert cannot be assembled onto the magnetic body from above. The magnetic insert can only be assembled onto the magnetic body from the front or back opening. The limiting structure can be set at the bottom of the magnetic body. When the magnetic insert is assembled onto the magnetic body, the limiting structure can achieve a good fixing effect on the magnetic insert.

[0009] Preferably, the limiting structure is configured as a dovetail groove structure, and the frame is provided with a guide groove for accommodating the coil.

[0010] By adopting the above technical solution, the dovetail groove structure facilitates the sliding installation of the magnetic insert into the magnetic body from the front or back. Once slid into place, it can limit the movement of the magnetic insert. This structure is simple and practical. The guide groove, where the coil is specifically copper wire, provides a certain degree of guidance and positioning for the copper wire as it is wound around the frame.

[0011] Preferably, both the magnetic core and the coil mounting base are provided with corresponding mounting holes, and fasteners for fixing the magnetic core and the coil mounting base are inserted through the mounting holes.

[0012] By adopting the above technical solution and setting the mounting holes, the coil assembly can be fixedly installed on the coil mounting base by fasteners passing through the magnetic core and the coil mounting base. The structure is simple and the connection is stable.

[0013] Preferably, the magnetic guiding unit includes at least two stacked magnetic guiding plates, and the magnetic guiding plates and / or the magnet mounting base are provided with positioning structures for positioning the magnet.

[0014] By adopting the above technical solution, the magnetic guiding unit can specifically be two magnetic guiding plates of different sizes stacked one on top of the other, or it can be a larger number of magnetic guiding plates, such as three or four. The magnetic guiding plates can be made of iron, thus possessing good magnetic conductivity. The combination of the magnetic guiding plates and the magnet can optimize the magnetic performance, while the positioning structure can realize the positioning of the magnet, which facilitates the installation of the magnet and prevents the magnet from shifting when it swings.

[0015] Preferably, each magnetic plate has a different size.

[0016] By adopting the above technical solution, the magnetic conductivity of each magnetic plate is different. Specifically, the size of the magnetic plate decreases sequentially from the magnet to the magnet mounting base, which makes the magnetic unit as a whole have better magnetic conductivity.

[0017] Preferably, the magnet mounting base is provided with a positioning receiving groove for accommodating the magnetic conductive unit. The position of each magnetic conductive plate in the positioning receiving groove is set as a corresponding groove body. The position of the magnet mounting base facing the coil assembly is set as a slot opening. The positioning receiving groove is connected to the slot opening, and the magnet is located in the slot opening.

[0018] By adopting the above technical solution, specifically, there are two slots corresponding to the magnetic plates, with two slots adapted to two magnetic plates. The two slots are also different in size. When the magnetic plates are installed in the slots, the slots can stably position and fix the magnetic plates. Furthermore, by providing slot openings, the magnets can be directly aligned with the coil assembly, resulting in better magnetic performance for the magnetic core and the magnets, and facilitating the installation of the coil assembly. During installation, first, the two magnetic plates are installed into their corresponding slots, then the magnets are magnetically attracted to the lowermost magnetic plate, and finally, the coil assembly is installed.

[0019] Preferably, the positioning structure includes a positioning groove on the magnetic plate, and a support plate is formed on both sides of the groove opening of the magnet mounting base. The side of the support plate near the groove opening is flush with the side wall of the positioning groove.

[0020] By adopting the above technical solution, the positioning groove is opened on the magnetic plate to facilitate manufacturing and forming, while the support plate can provide good support for the magnetic plate. The length of the support plate is set to match the position of the positioning groove. In this way, when the magnet is installed in the positioning groove, the support plate can also support the side of the magnet, making the positional stability of the magnet better.

[0021] Preferably, the magnet is flush with the bottom surface of the support plate near the coil assembly, or the magnet protrudes from the bottom surface of the support plate near the coil assembly.

[0022] By adopting the above technical solution, this configuration allows the magnet to be closer to the coil assembly, and the magnetic force between the magnet and the coil assembly is stronger.

[0023] Preferably, a positioning and mounting structure is provided between two adjacent stacked magnetic plates. The positioning and mounting structure is configured as a positioning post on one of the magnetic plates and a positioning hole on the other magnetic plate.

[0024] By adopting the above technical solution and setting the positioning and installation structure, it is possible to ensure good connection and stability between multiple magnetic plates constituting the magnetic conductive unit. During installation, two adjacent magnetic plates are first connected into a whole through the structure of positioning holes and positioning posts, and then multiple magnetic plates are installed into the positioning and receiving groove, which facilitates installation.

[0025] Preferably, the upper end of the frame is provided with a limiting groove, a metal shock-absorbing spring is installed in the limiting groove, and a limiting post is provided at the position of the frame in the limiting groove. The frame passes through the metal shock-absorbing spring through the limiting post and is heat-fused to the metal shock-absorbing spring.

[0026] By adopting the above technical solution, the metal shock-absorbing spring is made of metal material, which not only has the function of shock absorption but also improves the overall structural strength of the frame. The metal shock-absorbing spring is fixedly installed in the limiting groove, which provides a positioning function for the metal shock-absorbing spring during installation. The limiting post is made of plastic. When the metal shock-absorbing spring is placed in the limiting groove, the limiting post is melted to heat-fuss and fix the limiting post to the metal shock-absorbing spring, thus ensuring a better fixing effect of the metal shock-absorbing spring.

[0027] The beneficial effects of this utility model are: This utility model has a reasonable structural design. By setting up a separate magnetic core and magnetic insert, and providing an extension section on the magnetic core, the magnetic performance can be optimized and improved, and the assembly of the coil assembly can be made easier. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of a specific embodiment of the present utility model; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram illustrating the structure of the magnetically conductive unit in a specific embodiment of this utility model; Figure 4 This is a schematic diagram illustrating the structure of the coil assembly according to a specific embodiment of the present invention; Figure 5 This is a schematic diagram illustrating the structure of the magnetic core in a specific embodiment of this utility model; Figure 6 This is a schematic diagram illustrating the structure of the skeleton in a specific embodiment of the present invention; Figure 7 This is a schematic diagram of the frame structure in a specific embodiment of the present utility model.

[0029] In the diagram: 100, frame; 101, swing plate; 102, limiting groove; 103, limiting post; 200, magnet assembly; 300, coil assembly; 1, magnet mounting base; 11, positioning receiving groove; 12, groove; 13, slot opening; 14, support plate; 141, side; 142, bottom; 2, coil mounting base; 3, magnetic guiding unit; 31, magnetic guiding plate; 311, positioning groove; 312, positioning post; 313, positioning hole; 4, magnet; 5, magnetic guiding core; 51, skeleton; 52, coil; 53, magnetic guiding body; 54, magnetic guiding insert; 55, dovetail groove structure; 56, guide groove; 57, mounting hole; 58, fastener; 59, extension section; 6, metal shock-absorbing spring. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] like Figure 1-7As shown, a magnetic levitation motor frame includes: a frame body 100, which includes an integrally formed magnet mounting base 1, a coil mounting base 2, and a swing plate 101, the swing plate 101 being located on both sides between the magnet mounting base 1 and the coil mounting base 2; a magnet assembly 200, which is mounted on the magnet mounting base 1, and includes a magnetic guiding unit 3 and a magnet 4 arranged sequentially from the magnet mounting base 1 toward the coil mounting base 2; and a coil assembly 300, which is mounted on the coil mounting base 2, and includes a magnetic guiding core 5, a frame 51 disposed on the magnetic guiding core 5, and a coil 52 mounted on the frame 51. The magnetic guiding core 5 includes a separately disposed magnetic guiding body 53 and a magnetic guiding insert 54. The frame 51 is mounted on the magnetic guiding insert 54. The magnetic guiding body 53 has an extension section 59 extending toward the magnetic guiding insert 54 at one end near the magnet 4, the extension section 59 being opposite to the magnet 4.

[0032] By adopting the above technical solution, an integrally injection-molded frame 100 is set to increase the overall structural strength. Specifically, the swing plate 101 is located on both sides of the magnet assembly 200 and the coil assembly 300. The coil assembly 300 includes a magnetic core 5, which can be made of silicon steel sheet, has good support strength and magnetic conductivity. The magnetic core 5 is set separately. During installation, the coil 52 is first installed on the frame 51, and then the frame 51 is installed on the magnetic insert 54, where the magnetic insert 54 is located in the middle of the magnetic core 5. Then the coil assembly 300 is positioned and installed on the coil 52 fixing seat, which facilitates the installation of the coil assembly 300. By providing extension sections 59 on the magnetic cores 5 located on both sides of the magnetic insert 54, the coupling distance with the lateral movement of the magnet 4 is shortened. In existing technologies, the lateral length of the magnet 4 needs to span the upper center positions of the magnetic core 5 and the magnetic insert 54. This solution, with the extension sections 59, reduces the size of the magnet, thereby reducing the overall mass of the magnet assembly 200. This also lowers the oscillation inertia of the magnet assembly 200, reducing production costs and increasing the oscillation frequency of the magnet assembly 200. Furthermore, the extension sections 59 limit the movement of the frame 51 towards the magnet 4; that is, the extension sections 59 limit the upward movement of the frame 51 with the coil 52 wound around it, thus strengthening the limiting strength of the winding (i.e., the frame 51 with the coil 52 wound around it). A limiting structure is provided between the magnetic conductive body 53 and the magnetic conductive insert 54 to fix the magnetic conductive insert 54 to the magnetic conductive body 53. Since the extension section 59 restricts the upward movement of the skeleton 51 with the coil 52, after the coil 52 is wound onto the skeleton 51 and the skeleton 51 is assembled onto the magnetic conductive insert 54, the magnetic conductive insert 54 cannot be assembled onto the magnetic conductive body 53 from above. The magnetic conductive insert 54 can only be assembled onto the magnetic conductive body 53 from the front or back opening. The limiting structure can be set at the bottom of the magnetic conductive body 53. When the magnetic conductive insert 54 is assembled onto the magnetic conductive body 53, the limiting structure can achieve a good fixing effect on the magnetic conductive insert 54.

[0033] The limiting structure is configured as a dovetail groove structure 55, and the frame 51 is provided with a guide groove 56 for accommodating the coil 52. The dovetail groove structure 55 facilitates the sliding installation of the magnetic insert 54 into the magnetic body 53 from the front or back. When it slides into place, it can limit the magnetic insert 54. This structure is simple and practical. The guide groove 56, where the coil 52 is specifically copper wire, can play a certain guiding and positioning role when the copper wire is wound on the frame 51.

[0034] Both the magnetic core 5 and the coil mounting base 2 are provided with corresponding mounting holes 57. Fasteners 58 are inserted through the mounting holes 57 to fix the magnetic core 5 and the coil mounting base 2. The mounting holes 57 are provided so that the coil assembly 300 can be fixedly installed on the coil mounting base 2 by passing the fasteners 58 through the magnetic core 5 and the coil mounting base 2. The structure is simple and the connection is stable.

[0035] The magnetic guiding unit 3 includes at least two stacked magnetic guiding plates 31. The magnetic guiding plates 31 and / or the magnet mounting base 1 are provided with a positioning structure for positioning the magnet 4. Specifically, the magnetic guiding unit 3 can be two magnetic guiding plates 31 of different sizes stacked one on top of the other, or it can be a larger number of magnetic guiding plates 31, such as three or four. The magnetic guiding plates 31 can be made of iron, thus having good magnetic conductivity. The cooperation between the magnetic guiding plates 31 and the magnet 4 can optimize the magnetic performance. The positioning structure can realize the positioning of the magnet 4, which facilitates the installation of the magnet 4 and prevents the magnet 4 from shifting when it swings.

[0036] Furthermore, each magnetic plate 31 has a different size. This arrangement results in different magnetic conductivity properties for each magnetic plate 31. Specifically, the size of the magnetic plate 31 decreases sequentially from the magnet 4 toward the magnet mounting base 1, which allows the magnetic unit 3 as a whole to have better magnetic conductivity.

[0037] Furthermore, the magnet mounting base 1 is provided with a positioning receiving groove 11 for accommodating the magnetic guiding unit 3. The position of each magnetic guiding plate 31 in the positioning receiving groove 11 is set as a corresponding groove body 12. The position of the magnet mounting base 1 facing the coil assembly 300 is set as a slot 13. The positioning receiving groove 11 is connected to the slot 13. The magnet 4 is located in the slot 13. Specifically, there are two slot bodies 12 corresponding to the magnetic guiding plates 31. The two slot bodies 12 are adapted to the two magnetic guiding plates 31. The two slot bodies 12 are also different in size. When the magnetic guiding plate 31 is installed in the slot body 12, the slot body 12 can stably position and fix the magnetic guiding plate 31. Furthermore, by providing the slot 13, the magnet 4 can be directly aligned with the coil assembly 300, which gives the magnetic core 5 and the magnet 4 better magnetic performance and makes it easier to install the coil assembly 300. During installation, firstly, the two magnetic plates 31 are installed into the corresponding slots 12, then the magnet 4 is magnetically attracted to the lowest magnetic plate 31, and then the coil assembly 300 is installed.

[0038] The positioning structure includes a positioning groove 311 on the magnetic plate 31. The magnet mounting base 1 has support plates 14 formed on both sides of the groove opening 13. The side 141 of the support plate 14 near the groove opening 13 is flush with the corresponding side wall of the positioning groove 311. The positioning groove 311 on the magnetic plate 31 facilitates manufacturing, while the support plate 14 provides good support for the magnetic plate 31. The length of the support plate 14 is set to match the position of the positioning groove 311, so that when the magnet 4 is installed into the positioning groove 311, the support plate 14 can also support the side 141 of the magnet 4, resulting in better positional stability of the magnet 4.

[0039] Furthermore, the magnet 4 is flush with the bottom surface 142 of the support plate 14 near the coil assembly 300, or the magnet 4 protrudes from the bottom surface 142 of the support plate 14 near the coil assembly 300. This arrangement allows the magnet 4 to be closer to the coil assembly 300, and the magnetic force between the magnet 4 and the coil assembly 300 is stronger.

[0040] Furthermore, a positioning and mounting structure is provided between two adjacent stacked magnetic plates 31. The positioning and mounting structure is configured as a positioning post 312 on one of the magnetic plates 31 and a positioning hole 313 on the other magnetic plate 31. The positioning and mounting structure facilitates a good connection and stability between the multiple magnetic plates 31 constituting the magnetic unit 3. During installation, the two adjacent magnetic plates 31 are first connected into a whole through the structure of the positioning hole 313 and the positioning post 312, and then the multiple magnetic plates 31 are installed into the positioning receiving groove 11, which facilitates installation.

[0041] In addition, a limiting groove 102 is provided at the upper end of the frame 100, in which a metal shock-absorbing spring 6 is installed. A limiting post 103 is provided at the position of the limiting groove 102 on the frame 100. The frame 100 passes through the limiting post 103 and is thermally fused to the metal shock-absorbing spring 6. The metal shock-absorbing spring 6 is made of metal material, which not only has a shock-absorbing function but also improves the overall structural strength of the frame 100. The metal shock-absorbing spring 6 is fixedly installed in the limiting groove 102, which provides positioning for the metal shock-absorbing spring 6 during installation. The limiting post 103 is made of plastic. When the metal shock-absorbing spring 6 is placed in the limiting groove 102, the limiting post 103 is melted to thermally fuse and fix it to the metal shock-absorbing spring 6, thus ensuring a better fixing effect for the metal shock-absorbing spring 6.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A magnetic levitation motor frame, characterized in that, include: The frame (100) includes an integrally formed magnet mounting base (1), coil mounting base (2) and swing plate (101), the swing plate (101) being located on both sides between the magnet mounting base (1) and the coil mounting base (2); A magnet assembly (200) is mounted on a magnet mounting base (1) and includes a magnetically conductive unit (3) and a magnet (4) arranged sequentially from the magnet mounting base (1) toward the coil mounting base (2); The coil assembly (300) is mounted on the coil mounting base (2) and includes a magnetic core (5), a frame (51) disposed on the magnetic core (5) and a coil (52) mounted on the frame (51). The magnetic core (5) includes a magnetic body (53) and a magnetic insert (54) separately disposed. The frame (51) is mounted on the magnetic insert (54). The magnetic body (53) has an extension section (59) extending towards the magnetic insert (54) at one end near the magnet (4). The extension section (59) is opposite to the magnet (4).

2. The magnetic levitation motor frame according to claim 1, characterized in that, A limiting structure is provided between the magnetic conductive body (53) and the magnetic conductive insert (54) to fix the magnetic conductive insert (54) to the magnetic conductive body (53).

3. A magnetic levitation motor frame according to claim 2, characterized in that, The limiting structure is configured as a dovetail groove structure (55), and the frame (51) is provided with a guide groove (56) for accommodating the coil (52).

4. A magnetic levitation motor frame according to claim 3, characterized in that, The magnetic core (5) and the coil mounting base (2) are provided with corresponding mounting holes (57), and fasteners (58) for fixing the magnetic core (5) and the coil mounting base (2) are inserted into the mounting holes (57).

5. A magnetic levitation motor frame according to claim 1, 2, 3, or 4, characterized in that, The magnetic guiding unit (3) includes at least two stacked magnetic guiding plates (31), and the magnetic guiding plates (31) and / or the magnet mounting base (1) are provided with positioning structures for positioning the magnet (4).

6. A magnetic levitation motor frame according to claim 5, characterized in that, Each magnetic plate (31) has a different size.

7. A magnetic levitation motor frame according to claim 5, characterized in that, The magnet mounting base (1) is provided with a positioning receiving groove (11) for accommodating the magnetic guiding unit (3). The position of each magnetic guiding plate (31) in the positioning receiving groove (11) is set as a corresponding groove (12). The position of the magnet mounting base (1) facing the coil assembly (300) is set as a slot (13). The positioning receiving groove (11) is connected to the slot (13), and the magnet (4) is located in the slot (13).

8. A magnetic levitation motor frame according to claim 7, characterized in that, The positioning structure includes a positioning groove (311) on the magnetic plate (31), and a support plate (14) is formed on both sides of the groove opening (13) of the magnet mounting base (1). The side (141) of the support plate (14) near the groove opening (13) is flush with the side wall corresponding to the positioning groove (311).

9. A magnetic levitation motor frame according to claim 5, characterized in that, A positioning and mounting structure is provided between two adjacent stacked magnetic plates (31). The positioning and mounting structure is configured as a positioning post (312) on one of the magnetic plates (31) and a positioning hole (313) on the other magnetic plate (31).

10. A magnetic levitation motor frame according to claim 5, characterized in that, The upper end of the frame (100) is provided with a limiting groove (102), and a metal shock-absorbing spring (6) is installed in the limiting groove (102). The frame (100) is provided with a limiting post (103) at the position of the limiting groove (102). The frame (100) passes through the metal shock-absorbing spring (6) through the limiting post (103) and is heat-fused to the metal shock-absorbing spring (6).

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