Plastic package rotor assembly of disc type motor and disc type motor

Abstract

The plastic package rotor assembly comprises a rotor iron core, a rotating shaft, a plurality of magnetic shoes and an injection molding body, the rotor iron core comprises a plurality of iron core blocks, the plastic package rotor assembly is characterized in that the plastic package rotor assembly further comprises a framework, the framework is provided with installation grooves used for placing the iron core blocks and the magnetic shoes, and the magnetic shoes are arranged in the installation grooves. The plurality of iron core blocks and the plurality of magnetic shoes are distributed and placed in the mounting groove at intervals, the rotating shaft is arranged in the middle of the framework, the plurality of iron core blocks, the plurality of magnetic shoes, the framework and the rotating shaft are plastically packaged into a whole by the injection molding body, and the magnetic shoes and the iron core blocks are assembled by adopting the framework and then placed in a mold for integral injection molding; according to the injection molding mode, a surface-mounted process assembly mode is directly abandoned, the glue and material cost is saved, the assembly processing time is greatly shortened, and the product inspection in the production process can be relatively simple and fast according to the injection molding mode.

Description

Technical Field

[0001] The utility model relates to a plastic-sealed rotor assembly of a disc motor and a disc motor. Background Art

[0002] In current conventional designs, the rotor of a disc motor includes parts such as magnetic tiles, a rotor core, and a rotating shaft. The assembly of the rotor of a disc motor generally adopts a surface-mounted process. After evenly applying glue to parts such as magnetic tiles, they are arranged and fixed according to the electromagnetic scheme. Although this scheme can meet the design requirements of fixed assembly, various factors such as the application of glue, the curing temperature, and the curing time will all affect the fastening effect of the final product. The structural adhesive has a relatively long solidification time, and the inspection of part loosening of the product is relatively cumbersome, and there is a risk of magnetic tile detachment. Summary of the Invention

[0003] The purpose of the utility model is to provide a plastic-sealed rotor assembly of a disc motor and a disc motor, so as to solve the technical problem that in the prior art, the fastening effect of the final product is affected by various factors such as the application of glue, the curing temperature, and the curing time in the surface-mounted fixing scheme of rotor parts, the structural adhesive has a relatively long solidification time, the inspection of part loosening of the product is relatively cumbersome, and there is a risk of magnetic tile detachment.

[0004] The technical solution of the utility model is realized as follows:

[0005] The utility model provides a plastic-sealed rotor assembly of a disc motor, including a rotor core, a rotating shaft, a plurality of magnetic tiles, and an injection molding body. The rotor core includes a plurality of core blocks. It is characterized in that: it further includes a skeleton, and the skeleton is provided with installation grooves for placing the core blocks and the magnetic tiles. A plurality of core blocks and a plurality of magnetic tiles are arranged at intervals in the installation grooves. The rotating shaft is arranged in the middle of the skeleton, and the injection molding body seals the plurality of core blocks, the plurality of magnetic tiles, the skeleton, and the rotating shaft into one body.

[0006] The above-mentioned skeleton includes an inner annular ring and an outer annular ring. A plurality of connecting plates are provided between the bottoms of the inner annular ring and the outer annular ring. An installation groove is formed between the inner annular ring, the outer annular ring, and the connecting plates. The magnetic tiles are placed in the installation groove and the bottom of the magnetic tiles is supported on the connecting plate located at the bottom of the installation groove. The core blocks are arranged between two adjacent magnetic tiles.

[0007] On the inner and outer sides of the two side edges of the above-mentioned connecting plate, a first supporting table surface and a second supporting table surface are respectively provided. When the core block is installed between two adjacent magnetic tiles, the bottom of the core block is supported on the first supporting table surface and the second supporting table surface.

[0008] The top two side edges of the above-mentioned core block protrude with positioning bosses.

[0009] A dovetail groove is provided at the bottom of the above-mentioned core block, and the injection molding body fills the dovetail groove.

[0010] Through holes are provided on the partial connecting plates described above.

[0011] A disc motor includes a stator assembly and a plastic-sealed rotor assembly, characterized in that: the plastic-sealed rotor assembly is the plastic-sealed rotor assembly of the disc motor described above.

[0012] A plastic-sealed rotor assembly of a disc motor includes a rotor core, a rotating shaft, a plurality of magnetic tiles and an injection molding body. The rotor core includes a plurality of core blocks, and is characterized in that: it further includes a skeleton. The skeleton includes a bushing. An annular connecting portion is provided on the outer edge of the bushing. A plurality of positioning feet for installing the core blocks are provided on the edge of the annular connecting portion. The rotating shaft is inserted into the bushing. The magnetic tiles are arranged between two adjacent core blocks. The injection molding body plastic-seals the plurality of core blocks, the plurality of magnetic tiles, the skeleton and the rotating shaft into one body.

[0013] A groove is provided at the top of the positioning feet described above, and the core blocks are installed in the groove.

[0014] A positioning post is provided in the groove described above. A positioning groove matching with the positioning post is provided at the bottom of the core block. When the core block is installed in the groove, the positioning groove is clamped on the positioning post.

[0015] Positioning bosses protrude from the top two-side edges of the core blocks described above.

[0016] A receiving groove is provided at the bottom of each of the positioning feet described above.

[0017] A disc motor includes a stator assembly and a plastic-sealed rotor assembly, characterized in that: the plastic-sealed rotor assembly is the plastic-sealed rotor assembly of the disc motor described above.

[0018] Compared with the prior art, the present utility model has the following advantages:

[0019] 1. A plastic-sealed rotor assembly of a disc motor includes a rotor core, a rotating shaft, a plurality of magnetic tiles and an injection molding body. The rotor core includes a plurality of core blocks, and is characterized in that: it further includes a skeleton. Installation grooves for placing the core blocks and the magnetic tiles are provided on the skeleton. The plurality of core blocks and the plurality of magnetic tiles are arranged at intervals in the installation grooves. The rotating shaft is arranged in the middle of the skeleton. The injection molding body plastic-seals the plurality of core blocks, the plurality of magnetic tiles, the skeleton and the rotating shaft into one body. By first assembling the magnetic tiles and the core blocks with the skeleton and then putting them into a mold for integral injection molding; this injection molding method directly abandons the surface-mounted process assembly method, saves glue and material costs, greatly shortens the assembly processing time, and the product inspection during the production process can be relatively simple and fast according to this injection molding method.

[0020] 2. A plastic-sealed rotor assembly of a disc motor, comprising a rotor core, a rotating shaft, a plurality of magnetic tiles and an injection molding body. The rotor core includes a plurality of core blocks. It is characterized in that: it further includes a skeleton, the skeleton includes a bushing, an annular connecting portion is provided on the outer edge of the bushing, and a plurality of positioning feet for installing the core blocks are provided on the edge of the annular connecting portion. The rotating shaft is inserted into the bushing, the magnetic tiles are arranged between two adjacent core blocks, and the injection molding body seals the plurality of core blocks, the plurality of magnetic tiles, the skeleton and the rotating shaft into one body. By first assembling the magnetic tiles and the core blocks with the skeleton and then putting them into the mold for overall injection molding; this injection molding method directly abandons the surface-mounted process assembly method, saves glue and material costs, greatly shortens the assembly and processing time, and the product inspection during the production process can be relatively simple and fast according to this method.

[0021] 3. Other advantages of the present invention are described in detail in the embodiment part of the specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional view provided by Embodiment 1 of the present invention;

[0023] Figure 2 is an exploded view provided by Embodiment 1 of the present invention;

[0024] Figure 3 is a partial structural schematic diagram provided by Embodiment 1 of the present invention;

[0025] Figure 4 is a partial exploded view provided by Embodiment 1 of the present invention;

[0026] Figure 5 is another partial structural schematic diagram provided by Embodiment 1 of the present invention;

[0027] Figure 6 is a three-dimensional view provided by Embodiment 3 of the present invention;

[0028] Figure 7 is a three-dimensional view from another angle provided by Embodiment 3 of the present invention;

[0029] Figure 8 is a partial structural exploded view provided by Embodiment 3 of the present invention;

[0030] Figure 9 is an exploded view provided by Embodiment 3 of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0032] Embodiment 1:

[0033] As Figures 1 to 5 shown, this embodiment provides a plastic-sealed rotor assembly of a disc motor, which includes a rotor core 1, a rotating shaft 2, a plurality of magnetic tiles 3, and an injection molding body 4. The rotor core 1 includes a plurality of core blocks 11. It is characterized in that: it further includes a skeleton 5, and the skeleton 5 is provided with an installation groove 51 for placing the core blocks 11 and the magnetic tiles 3. A plurality of core blocks 11 and a plurality of magnetic tiles 3 are arranged at intervals in the installation groove 51. The rotating shaft 2 is arranged in the middle of the skeleton 5. The injection molding body 4 plastic-seals a plurality of core blocks 11, a plurality of magnetic tiles 3, the skeleton 5, and the rotating shaft 2 into one body. By first assembling the magnetic tiles and core blocks with the skeleton and then putting them into the mold for overall injection molding; this injection molding method directly abandons the surface-mounted process assembly method, saves glue and material costs, and greatly shortens the assembly and processing time. According to this injection molding method, the product inspection during the production process can be relatively simple and fast.

[0034] The above-mentioned skeleton 5 includes an inner annular ring 52 and an outer annular ring 53. A plurality of connecting plates 54 are provided between the bottoms of the inner annular ring 52 and the outer annular ring 53. An installation groove 51 is formed between the inner annular ring 52, the outer annular ring 53, and the connecting plates 54. The magnetic tile 3 is placed in the installation groove 51 and the bottom of the magnetic tile 3 is supported on the connecting plate 54 located at the bottom of the installation groove 51. The core block 11 is arranged between two adjacent magnetic tiles 3. This structure is simple, reasonably arranged, convenient for the installation and positioning of the magnetic tiles and core blocks, and convenient for injection molding.

[0035] On the inner and outer sides of the two side edges of the above-mentioned connecting plate 54, there are respectively a first supporting table surface 541 and a second supporting table surface 542. When the core block 11 is installed between two adjacent magnetic tiles 3, the bottom of the core block 11 is supported on the first supporting table surface 541 and the second supporting table surface 542, which is convenient for the positioning and installation of the core block, and the structure is reasonably arranged.

[0036] On the two side edges of the top of the above-mentioned core block 11, there are protruding positioning bosses 111, and the structure is reasonably arranged.

[0037] 1. At the bottom of the above-mentioned core block 11, there is a dovetail groove 112, and the injection molding body 4 is filled in the dovetail groove 112 to improve the bonding degree of the core block during injection molding, and the structure is reasonably arranged.

[0038] A through hole 543 is provided on the above-mentioned partial connecting plate 54, which improves the bonding degree during the injection molding of the skeleton, and the structural arrangement is reasonable.

[0039] Embodiment 2:

[0040] A disc motor includes a stator assembly and a plastic-encapsulated rotor assembly, and is characterized in that: the plastic-encapsulated rotor assembly is the plastic-encapsulated rotor assembly of the disc motor described in Embodiment 1.

[0041] Embodiment 3:

[0042] As Figures 6 to 9 shown, a plastic-encapsulated rotor assembly of a disc motor includes a rotor core 1, a rotating shaft 2, a plurality of magnetic tiles 3 and an injection molding body 4. The rotor core 1 includes a plurality of core blocks 11, and is characterized in that: it further includes a skeleton 5. The skeleton 5 includes a shaft sleeve 55. An annular connecting portion 56 is provided on the outer edge of the shaft sleeve 55. A plurality of positioning feet 57 for installing the core blocks 11 are provided on the edge of the annular connecting portion 56. The rotating shaft 2 is inserted into the shaft sleeve 55. The magnetic tiles 3 are arranged between two adjacent core blocks 11. The injection molding body 4 plastic-encapsulates the plurality of core blocks 11, the plurality of magnetic tiles 3, the skeleton 5 and the rotating shaft 2 into one body. By first assembling the magnetic tiles and the core blocks with the skeleton and then putting them into the mold for overall injection molding; this injection molding method directly abandons the surface-mounted process assembly method, saves glue and material costs, greatly shortens the assembly processing time, and according to this injection molding method, the product inspection during the production process can be relatively simple and fast.

[0043] A groove 570 is provided at the top of the above-mentioned positioning foot 57, and the core block 11 is installed in the groove 570, which is convenient for the installation of the core block, and the structural arrangement is reasonable.

[0044] A positioning post 571 is provided in the above-mentioned groove 570, and a positioning groove 113 matching with the positioning post 571 is provided at the bottom of the core block 11. When the core block 11 is installed in the groove 570, the positioning groove 113 is clamped on the positioning post 571 to prevent the displacement of the core block, and the structural arrangement is reasonable.

[0045] The top two side edges of the above-mentioned core block 11 protrude with positioning bosses 111, and the structural arrangement is reasonable.

[0046] A receiving groove 572 is provided at the bottom of each of the above-mentioned positioning feet 57.

[0047] Embodiment 4:

[0048] A disc motor includes a stator assembly and a plastic-encapsulated rotor assembly, and is characterized in that: the plastic-encapsulated rotor assembly is the plastic-encapsulated rotor assembly of the disc motor described in Embodiment 3.

[0049] The above embodiments are the preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited thereto. Any other changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model are equivalent replacement methods and are all included in the protection scope of the present utility model.

Claims

1. A plastic-sealed rotor assembly of a disc motor, comprising a rotor core (1), a rotating shaft (2), a plurality of magnetic tiles (3) and an injection molding body (4), the rotor core (1) comprising a plurality of core blocks (11), characterized in that: It further includes a framework (5), on which there are mounting grooves (51) for placing iron core blocks (11) and magnetic tiles (3). A number of iron core blocks (11) and a number of magnetic tiles (3) are circumferentially and spacedly distributed and placed in the mounting grooves (51). The rotating shaft (2) is arranged in the middle of the framework (5), and the injection molded body (4) integrally encapsulates a number of iron core blocks (11), a number of magnetic tiles (3), the framework (5) and the rotating shaft (2).

2. The plastic-sealed rotor assembly of a disc motor according to claim 1, characterized in that: The framework (5) includes an inner annular ring (52) and an outer annular ring (53). There are a number of connecting plates (54) connecting between the bottoms of the inner annular ring (52) and the outer annular ring (53). An installation groove (51) is formed among the inner annular ring (52), the outer annular ring (53) and the connecting plates (54). The magnetic tile (3) is placed in the installation groove (51) and the bottom of the magnetic tile (3) is supported on the connecting plate (54) located at the bottom of the installation groove (51). The iron core block (11) is arranged between two adjacent magnetic tiles (3).

3. The plastic-sealed rotor assembly of a disc motor according to claim 2, characterized in that: On the inner and outer sides of the two side edges of the connecting plate (54), there are respectively a first support table surface (541) and a second support table surface (542). When the iron core block (11) is installed between two adjacent magnetic tiles (3), the bottom of the iron core block (11) is supported on the first support table surface (541) and the second support table surface (542).

4. The plastic-sealed rotor assembly of a disc motor according to claim 3, characterized in that: On the two side edges of the top of the iron core block (11), there are protruding positioning bosses (111).

5. The plastic-sealed rotor assembly of a disc motor according to claim 4, characterized in that: At the bottom of the iron core block (11), there is a dovetail groove (112), and the injection molded body (4) fills in the dovetail groove (112).

6. A plastic-sealed rotor assembly of a disc motor according to claim 2 or 3 or 4 or 5, characterized in that: Some of the connecting plates (54) are provided with through holes (543).

7. A disc motor, comprising a stator assembly and a plastic-sealed rotor assembly, characterized in that: The encapsulated rotor assembly is the encapsulated rotor assembly of the disc motor according to any one of claims 1 to 6.

8. A plastic-sealed rotor assembly of a disc motor, comprising a rotor core (1), a rotating shaft (2), a plurality of magnetic tiles (3) and an injection molding body (4), the rotor core (1) comprising a plurality of core blocks (11), characterized in that: It further includes a framework (5), and the framework (5) includes a bushing (55). On the outer side edge of the bushing (55), there is an annular connecting portion (56). On the edge of the annular connecting portion (56), there are a number of positioning feet (57) for installing iron core blocks (11). The rotating shaft (2) is inserted into the bushing (55). The magnetic tile (3) is arranged between two adjacent iron core blocks (11). The injection molded body (4) integrally encapsulates a number of iron core blocks (11), a number of magnetic tiles (3), the framework (5) and the rotating shaft (2).

9. The plastic-sealed rotor assembly of a disc motor according to claim 8, characterized in that: On the top of the positioning foot (57), there is a groove (570), and the iron core block (11) is installed in the groove (570).

10. The plastic-sealed rotor assembly of a disc motor according to claim 9, characterized in that: In the groove (570), there is a positioning post (571). At the bottom of the iron core block (11), there is a positioning groove (113) matching with the positioning post (571). When the iron core block (11) is installed in the groove (570), the positioning groove (113) is clamped on the positioning post (571).

11. A plastic-sealed rotor assembly of a disc motor according to claim 10, characterized in that: On the two side edges of the top of the iron core block (11), there are protruding positioning bosses (111).

12. A plastic-sealed rotor assembly of a disc motor according to claim 8 or 9 or 10 or 11, characterized in that: At the bottom of each positioning foot (57), there is a receiving groove (572).

13. A disc motor, comprising a stator assembly and a plastic-sealed rotor assembly, characterized in that: The encapsulated rotor assembly is the encapsulated rotor assembly of the disc motor according to any one of claims 8 to 12.

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