Disc type permanent magnet motor

Abstract

The disc type permanent magnet motor comprises a stator, a connecting disc and a connecting assembly, an outer shell is arranged on the outer side of the stator, a front cover shell is fixed to the left side of the outer shell, a plurality of sets of limiting columns are fixed to the right side of the stator, and the connecting disc is located on the right sides of the limiting columns. The right side of the connecting disc is connected with a rotor, the connecting assembly is located between the connecting disc and the rotor, the connecting assembly comprises supporting blocks, mounting grooves, mounting blocks, a left limiting protrusion and a right limiting protrusion, a plurality of sets of supporting blocks are fixed to the left side of the rotor, and the mounting grooves are formed in the inner sides of the supporting blocks in a penetrating mode; and the right limiting protrusions are fixed to the inner sides of the mounting grooves, a plurality of sets of mounting blocks are fixed to the right side of the connecting disc, and the left limiting protrusions are arranged on the outer sides of the multiple sets of mounting blocks in a surrounding mode. The firmness of the joint can be improved, and the permanent magnets can be prevented from falling off when the motor runs at a high speed.

Description

Technical Field

[0001] The utility model relates to the technical field of permanent magnet motors, in particular to a disc type permanent magnet motor. Background Art

[0002] The disc permanent magnet motor is an axial magnetic field permanent magnet synchronous motor, and its typical structure is that the stator and rotor are both disc-shaped, placed equidistantly in the motor, and generate an axial air gap magnetic field. For example, the patent document with application number CN202210607673.8 discloses a disc permanent magnet motor structure, in which rotor poles are arranged on the sides where the upper rotor jaws and the lower rotor jaws are close to each other, and the fixed plug plate can be raised and lowered in the lifting slot, so that the position of the upper rotor jaw between the upper shell and the lower shell can be adjusted, so as to avoid collision between the upper rotor jaw and the structure between the upper shell and the lower shell.

[0003] However, similar schemes mentioned above bond the permanent magnets to the inner side of the rotor yoke by means of bonding, which makes the connection not firmly fixed, and the permanent magnets are prone to fall off when the motor runs at high speed. In addition, when the rotor starts and stops, a pulling force is generated between the rotor and the stator due to the action of inertia. This pulling force will damage the fixation between the rotor and the stator, thereby reducing the service life of the motor.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a disc-type permanent magnet motor is proposed. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a disc-type permanent magnet motor, which solves the above-mentioned similar solutions proposed in the above-mentioned background technology. The permanent magnet is bonded to the inner side of the rotor yoke by bonding, so that the connection is not firmly fixed, and when the motor runs at high speed, the permanent magnet is easy to fall off. In addition, when the rotor starts and stops, a pulling force is generated between the rotor and the stator under the action of inertia. This pulling force will damage the fixation between the rotor and the stator, thereby reducing the service life of the motor.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a disc-type permanent magnet motor, comprising a stator, a connecting disc and a connecting assembly, wherein a plurality of groups of limiting columns are fixed to the right side of the stator, and the connecting disc is located on the right side of the limiting columns, and a rotor is connected to the right side of the connecting disc, the connecting assembly is located between the connecting disc and the rotor, and the connecting assembly comprises a support block, a mounting groove, a mounting block, a left limiting protrusion and a right limiting protrusion, and a plurality of groups of the support blocks are fixed to the left side of the rotor, the inner sides of the plurality of groups of the support blocks are penetrated by the mounting groove, and the inner sides of the mounting groove are fixed with the right limiting protrusion, a plurality of groups of the mounting blocks are fixed to the right side of the connecting disc, and the outer sides of the plurality of groups of the mounting blocks are surrounded by the left limiting protrusion.

[0007] Furthermore, an outer shell is arranged on the outer side of the stator, and a front cover shell is fixed on the left side of the outer shell.

[0008] Furthermore, an output port is provided through the center of the front cover shell, and a bearing is fixed between the output port and the stator.

[0009] Furthermore, the limiting columns are surrounded by four groups, and a rubber pad is fixed on the left side of the connecting disk, and a coil is fixed between the connecting disk and the rotor, and the coil is located on the outside of the support block.

[0010] Furthermore, eight groups of the mounting blocks are arranged around the mounting blocks, and four groups of limiting grooves are arranged equidistantly on the inner side of the mounting blocks, and the positions of the four groups of limiting grooves correspond to the positions of the limiting posts.

[0011] Furthermore, the stator forms a disassembly structure with the connection disk through the limiting column and the limiting groove, and the connection disk forms a disassembly structure with the rotor through the connecting assembly.

[0012] The utility model provides a disc-type permanent magnet motor, which has the following beneficial effects:

[0013] It can improve the firmness of the connection and prevent the permanent magnet from falling off when the motor is running at high speed. Moreover, when the rotor starts and stops, a pulling force will be generated between the permanent magnet and the disc under the action of inertia, which can eliminate the pulling force, thereby protecting the rotor and stator, and thus improving the service life of the motor. The specific contents are as follows:

[0014] The coil is wound around the outside of the support block, and the mounting block on the right side of the connecting disk is inserted into the mounting groove, so that the coil is fixed between the connecting disk and the rotor, and the limiting column on the right side of the stator is inserted into the limiting groove, so that the stator and the rotor are fixed by snapping. Because a rubber pad is provided between the stator and the connecting disk, the pulling force between the rotor and the stator can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of a disc-type permanent magnet motor of the utility model;

[0016] Figure 2 It is a schematic diagram of the exploded structure of a disc-type permanent magnet motor of the utility model;

[0017] Figure 3 This is a schematic diagram of the connection structure of the rotor and the connection assembly of a disc-type permanent magnet motor of the utility model;

[0018] Figure 4 The utility model is a disc type permanent magnet motor Figure 3 Enlarged structural diagram at A in the middle.

[0019] In the figure: 1. outer shell; 2. front cover shell; 3. output port; 31. bearing; 4. stator; 41. limit column; 5. connecting plate; 51. rubber pad; 6. coil; 7. rotor; 8. connecting assembly; 801. support block; 802. mounting groove; 803. mounting block; 804. left limit protrusion; 805. right limit protrusion; 831. limit groove. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0021] like Figures 1 to 4 As shown, a disc-type permanent magnet motor includes a stator 4, a connecting disc 5 and a connecting assembly 8, an outer shell 1 is arranged on the outer side of the stator 4, and a front cover shell 2 is fixed on the left side of the outer shell 1, an output port 3 is provided through the center of the front cover shell 2 for connecting with an external mechanical structure to drive the mechanical structure to rotate, and a bearing 31 is fixed between the output port 3 and the stator 4 to improve the stability of the motor rotation, a plurality of groups of limit columns 41 are fixed on the right side of the stator 4, and four groups of limit columns 41 are arranged around, and a coil 6 is fixed between the connecting disc 5 and the rotor 7, because the coil 6 is located on the outer side of the support block 801, it is used to fix the coil 6, so as to prevent the coil 6 from being pulled outward by the centrifugal force when the motor rotates at high speed, causing the displacement of the coil 6, which affects the normal rotation of the motor;

[0022] The connecting plate 5 is located on the right side of the limiting column 41, and the right side of the connecting plate 5 is connected to the rotor 7, and the left side of the connecting plate 5 is fixed with a rubber pad 51. When the rotor stops, the stator 4 loses power and stops rotating. The rubber pad 51 contacts the stator 4 over a large area, so that the pulling force when stopping is dispersed to the rubber pad 51, so that the stator and the rotor can be protected, thereby improving the service life of the motor. The connecting component 8 is located between the connecting plate 5 and the rotor 7, and the connecting component 8 includes a support block 801, an installation block 802, and a support block 803. The mounting groove 802, the mounting block 803, the left limiting protrusion 804 and the right limiting protrusion 805, and the left side of the rotor 7 is fixed with several groups of support blocks 801 to support the entire connection assembly 8, which can improve the stability of the connection. The inner sides of the several groups of support blocks 801 are all penetrated with mounting grooves 802, and the inner side of the mounting groove 802 is fixed with a right limiting protrusion 805, and the material of the right limiting protrusion 805 is polyphenylene sulfide, which can withstand high temperatures and avoid deformation when the motor is rotating;

[0023] Eight groups of mounting blocks 803 are fixed on the right side of the connecting plate 5, and the outer sides of several groups of mounting blocks 803 are surrounded by left limiting protrusions 804. By inserting the mounting block 803 into the mounting groove 802 and making the left limiting protrusion 804 clamped on the right side of the right limiting protrusion 805, the connecting plate 5 is fixed to the rotor 7. Because the connecting plate 5 and the rotor 7 form a disassembly structure through the connecting assembly 8, the structure is simple and easy to install. Because the stator 4 forms a disassembly structure with the connecting plate 5 through the limiting column 41 and the limiting groove 831, and the inner side of the mounting block 803 is equidistantly provided with four groups of limiting grooves 8 31, and the positions of the four groups of limiting grooves 831 correspond to the positions of the limiting columns 41, so that the limiting columns 41 can be inserted into the inner side of the limiting grooves 831 and are also located on the inner side of the support block 801, which can reduce the circumferential force on the limiting columns 41, so that the stator 4 and the connecting disk 5 can be installed, and the stator 4 and the rotor 7 are tightly connected through the connecting disk 5. Since the connecting disk 5 can disperse the torsional force between the stator 4 and the rotor 7 to the entire connecting disk 5, the force on the stator 4 can be relieved, thereby improving the firmness of the connection, and preventing the permanent magnet from falling off when the motor runs at high speed.

[0024] In summary, before using this type of disc-type permanent magnet motor, first, wind the coils 6 around the outer sides of the eight groups of support blocks 801, and insert the mounting block 803 on the right side of the connecting disk 5 into the mounting groove 802. At the same time, the left limiting protrusion 804 is deformed and inserted into the right side of the right limiting protrusion 805, so that the connecting disk 5 is fixed on the left side of the rotor 7, and the coil 6 is fixed between the connecting disk 5 and the rotor 7. Pick up the stator 4, and make the limiting column 41 on the right side of the stator 4 pass through the rubber pad 51 and be inserted into the inner side of the limiting groove 831, so that the stator 4 and the connecting disk 5 are fixed, and the bearing 31 is installed on the inner side of the output port 3, and the front cover shell 2 is closed, and the mechanical structure that needs to be rotated is connected to the output port 3, and the motor is started. The rotor 7 drives the connecting disk 5 and the stator 4 to rotate. Because a rubber pad 51 is arranged between the stator 4 and the connecting disk 5, the pulling force between the rotor 7 and the stator 4 can be reduced.

[0025] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0026] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A disc-type permanent magnet motor, comprising a stator (4), a connecting disc (5) and a connecting assembly (8), characterized in that: A plurality of groups of limiting columns (41) are fixed to the right side of the stator (4), and the connecting disk (5) is located on the right side of the limiting column (41), and the right side of the connecting disk (5) is connected to the rotor (7), and the connecting assembly (8) is located between the connecting disk (5) and the rotor (7), and the connecting assembly (8) comprises a support block (801), a mounting groove (802), a mounting block (803), a left limiting protrusion (804), and a right limiting protrusion (805), and a plurality of groups of the supporting blocks (801) are fixed to the left side of the rotor (7), the inner sides of the plurality of groups of the supporting blocks (801) are all provided with the mounting groove (802) penetrating therethrough, and the inner sides of the mounting groove (802) are fixed with the right limiting protrusion (805), and a plurality of groups of the mounting blocks (803) are fixed to the right side of the connecting disk (5), and the outer sides of the plurality of groups of the mounting blocks (803) are surrounded by the left limiting protrusion (804).

2. A disc-type permanent magnet motor according to claim 1, characterized in that: An outer shell (1) is provided on the outside of the stator (4), and a front cover shell (2) is fixed on the left side of the outer shell (1).

3. A disc-type permanent magnet motor according to claim 2, characterized in that: An output port (3) is provided through the center of the front cover shell (2), and a bearing (31) is fixed between the output port (3) and the stator (4).

4. A disc-type permanent magnet motor according to claim 1, characterized in that: Four groups of the limiting columns (41) are arranged around the connection plate (5), a rubber pad (51) is fixed on the left side of the connection plate (5), a coil (6) is fixed between the connection plate (5) and the rotor (7), and the coil (6) is located outside the support block (801).

5. A disc-type permanent magnet motor according to claim 4, characterized in that: The mounting block (803) is provided with eight groups around it, and four groups of limiting grooves (831) are provided at equal intervals on the inner side of the mounting block (803), and the positions of the four groups of limiting grooves (831) correspond to the positions of the limiting columns (41).

6. A disc-type permanent magnet motor according to claim 5, characterized in that: The stator (4) forms a disassembly structure with the connection disk (5) through the limiting column (41) and the limiting groove (831), and the connection disk (5) forms a disassembly structure with the rotor (7) through the connection assembly (8).

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