Permanent magnet synchronous motor rotor

Abstract

The utility model relates to the technical field of permanent magnet synchronous motor rotors, and discloses a permanent magnet synchronous motor rotor which comprises a hollow shaft body, the outer surface of the hollow shaft body is fixedly sleeved with a sleeve block, the outer surface of the sleeve block is slidably inserted with four insertion blocks which are symmetrical in pairs, and the tops of the four insertion blocks are fixedly connected with connecting blocks. The top of each connecting block is fixedly connected with a permanent magnet block, one side of the bottom of each inserting block is fixedly connected with a sliding inserting column, one end of each sliding inserting column is fixedly connected with a limiting block, and when the pull handle is pulled, through sliding of a sliding piece, elasticity of a spring and sliding inserting connection of two inserting columns at inserting holes, the two inserting columns can be inserted into the inserting holes, and therefore the pull handle can be pulled out. The four sliding inserting columns slide at the arc-shaped openings through rotation of the rotating blocks, so that position adjustment of the four permanent magnet blocks is achieved through stretching and retracting of the four inserting blocks, and therefore the device can be matched with stators of motors of different sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of permanent magnet synchronous motor rotors, in particular to a permanent magnet synchronous motor rotor. Background Art

[0002] Permanent magnet synchronous motor is a type of motor widely used in industries, automobiles, power tools, etc. Permanent magnet synchronous motor uses permanent magnets to generate magnetic fields and achieves efficient operation through synchronous rotation. One of its core components is the rotor.

[0003] The rotor is generally installed inside the motor in conjunction with the stator. However, existing motors have boxes of various diameters. After the stator is installed, if the distance between the rotor and the stator is too large, the interaction magnetic force between the rotor and the stator will be reduced, causing problems with magnetic rotation. The existing rotor cannot adapt to motors with various box diameters, so different rotor settings are required according to different motors.

[0004] Therefore, it is necessary to design a permanent magnet synchronous motor rotor to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a permanent magnet synchronous motor rotor, which is used to solve the technical problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a permanent magnet synchronous motor rotor, comprising a hollow shaft body, a sleeve block is fixedly sleeved on the outer surface of the hollow shaft body, four symmetrical inserting blocks are slidably inserted on the outer surface of the sleeve block, and the tops of the four inserting blocks are fixedly connected to connecting blocks, the tops of the four connecting blocks are fixedly connected to permanent magnet blocks, the bottom sides of the four inserting blocks are fixedly connected to sliding plug-in columns, and one ends of the four sliding plug-in columns are fixedly connected to limiting blocks, and the outer surfaces of the four sliding plug-in columns are respectively rotatably sleeved with a rotating block between the four limiting blocks and the four inserting blocks, four arc-shaped openings are opened on the rotating block, and the four sliding plug-in columns are respectively slidably arranged inside the four arc-shaped openings, the outer surface of the rotating block on one side of the limiting block is fixedly connected to a rotating shaft, and an elastic rotating mechanism is arranged on one side of the rotating shaft, and the elastic rotating mechanism is used to limit the rotation of the rotating block.

[0007] Preferably, the elastic rotation mechanism includes a plug-in block, which is fixed to the inner cavity of the hollow shaft body, and the outer surface of the plug-in block is provided with a plurality of circumferentially distributed plug holes, one end of the rotating shaft is slidably plugged into the interior of the plug-in block, a sliding plate is slidably arranged inside the hollow shaft body, a spring is fixed between the plug-in block and the sliding plate, the sliding plate is fixed with two symmetrical plug posts on the outer surface of one side of the plug-in block, the two plug posts are respectively slidably plugged into the interior of the plurality of plug holes, and a handle is fixed to the outer surface of the sliding plate away from the plug-in block.

[0008] Preferably, a coupling is provided at one end of the hollow shaft body, and the coupling is provided at one side of the handle, and the handle is provided inside the hollow shaft body at one side of the coupling.

[0009] Preferably, one side of the outer surface of the four inserting blocks is in contact with one side of the rotating block, and a distance is provided between one side of the outer surface of the four limiting blocks and the other side of the rotating block.

[0010] Preferably, the rotating block and the sliding sheet are both circular blocks, and the diameters of the rotating block and the sliding sheet are both smaller than the inner cavity diameter of the hollow shaft body.

[0011] Preferably, two ends of the rotating shaft are respectively fixed to one side of the outer surface of the rotating block and the sliding sheet, and the spring is sleeved on the outer surface of the rotating shaft between the sliding sheet and the plug-in block.

[0012] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0013] The utility model adopts the structural design of the handle. When the handle is pulled, the sliding of the sliding sheet and the elasticity of the spring, as well as the sliding insertion of two plugging posts at the insertion holes, are used to utilize the rotation of the rotating block to realize the sliding of four sliding plugging posts at the arc-shaped opening, thereby utilizing the extension and retraction of the four plugging blocks to realize the position adjustment of the four permanent magnet blocks, so that the device can be matched with the stators of motors of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the hollow shaft structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the exploded block structure of the utility model;

[0017] Figure 4 This is another schematic diagram of the structure decomposition of the hollow shaft body of the utility model;

[0018] In the figure: 1. hollow shaft body; 2. connecting block; 3. permanent magnet block; 4. handle; 5. coupling; 6. sleeve block; 7. rotating block; 8. limit block; 9. rotating shaft; 10. plug-in block; 11. plug-in column; 12. sliding sheet; 13. sliding plug-in column; 14. spring; 15. plug-in block. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] Obviously, many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0021] See also Figure 1-4 The utility model provides a permanent magnet synchronous motor rotor, including a hollow shaft body 1, the outer surface of the hollow shaft body 1 is fixedly sleeved with a sleeve block 6, the outer surface of the sleeve block 6 is slidably inserted with four symmetrical inserting blocks 15, and the tops of the four inserting blocks 15 are fixedly connected with a connecting block 2, the tops of the four connecting blocks 2 are fixedly connected with a permanent magnet block 3, the bottom side of the four inserting blocks 15 are fixedly connected with a sliding plug-in column 13, and one end of the four sliding plug-in columns 13 is fixedly connected with a limiting block 8, the outer surfaces of the four sliding plug-in columns 13 are respectively rotatably sleeved with a rotating block 7 between the four limiting blocks 8 and the four inserting blocks 15, and the rotating block 7 is provided with four arc-shaped openings symmetrically in pairs, and the four The sliding plug-in columns 13 are respectively slidably arranged inside the four arc-shaped openings. The outer surface of the rotating block 7 on one side of the limit block 8 is fixedly connected with a rotating shaft 9. An elastic rotating mechanism is arranged on one side of the rotating shaft 9. The elastic rotating mechanism is used to limit the rotation of the rotating block 7. When the permanent magnet block 3 needs to be adjusted, the rotating block 7 is driven to rotate when the rotation adjustment mechanism is used to limit the rotation of the rotating block 7. At this time, the four sliding plug-in columns 13 will slide at the four arc-shaped openings, thereby extending or retracting the four plug-in blocks 15, thereby driving the connecting block 2 and the permanent magnet block 3 to slide outside the hollow shaft body 1, so that the spacing between the four permanent magnet blocks 3 can be adjusted to adapt to the use of stators on motors of different sizes.

[0022] It should be noted that the elastic rotation mechanism mentioned in the above description includes a handle 4. When the handle 4 is pulled, elasticity is generated by the contraction of the spring 14 until the two plug posts 11 are pulled out of the insertion hole of the plug-in block 10. At the same time, the rotating block 7 also slides along with the sliding of the sliding sheet 12. Once the two plug posts 11 are pulled out of the insertion hole, the rotation of the rotating block 7 can be achieved by driving the sliding sheet 12 to rotate through the handle 4, thereby making the four sliding plug posts 13 slide at the arc-shaped mouth to achieve the extension and contraction of the four plug-in blocks 15.

[0023] In order to facilitate the connection of the device with other shafts, a coupling 5 is provided at one end of the hollow shaft 1, and the coupling 5 is provided on one side of the handle 4, and the handle 4 is provided inside the hollow shaft 1 on the side of the coupling 5.

[0024] Furthermore, in order to enable the rotating block 7 to slide along with the sliding of the sliding sheet 12, and to limit the rotation of the rotating block 7 by slidingly plugging the two plug posts 11 into the plug holes, one side of the outer surface of the four plug blocks 15 is in contact with one side of the rotating block 7, and a spacing is set between one side of the outer surface of the four limit blocks 8 and the other side of the rotating block 7.

[0025] Furthermore, in order to facilitate the sliding and rotation of the rotating block 7 and the sliding piece 12 inside the hollow shaft body 1, the rotating block 7 and the sliding piece 12 are both circular blocks, and the diameters of the rotating block 7 and the sliding piece 12 are both smaller than the inner cavity diameter of the hollow shaft body 1.

[0026] By utilizing the elastic setting of the spring 14, it is convenient for the two plug posts 11 to slide and plug in the circular holes distributed in a circumferential manner on the plug-in block 10. The two ends of the rotating shaft 9 are respectively fixed to one side of the outer surface of the rotating block 7 and the sliding sheet 12, and the spring 14 is sleeved on the outer surface of the rotating shaft 9 between the sliding sheet 12 and the plug-in block 10.

[0027] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0028] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0029] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A permanent magnet synchronous motor rotor, comprising a hollow shaft (1), characterized in that: The outer surface of the hollow shaft body (1) is fixedly sleeved with a sleeve block (6), and the outer surface of the sleeve block (6) is slidably inserted with four symmetrical insert blocks (15), and the tops of the four insert blocks (15) are fixedly connected to a connecting block (2), and the tops of the four connecting blocks (2) are fixedly connected to a permanent magnet block (3), and the bottoms of the four insert blocks (15) are fixedly connected to a sliding insert column (13), and one end of the four sliding insert columns (13) is fixedly connected to a limiting block (8), and the four sliding insert columns (13) are fixedly connected to the limiting block (8). ) is respectively connected to a rotating block (7) on the outer surface of the rotating block (7) between four limit blocks (8) and four plug blocks (15) for common rotation. The rotating block (7) is provided with four arc-shaped openings symmetrical in pairs, and the four sliding plug-in columns (13) are respectively slidably arranged inside the four arc-shaped openings. The rotating block (7) is fixedly connected to a rotating shaft (9) on the outer surface of one side of the limit block (8). An elastic rotating mechanism is arranged on one side of the rotating shaft (9), and the elastic rotating mechanism is used to limit the rotation of the rotating block (7).

2. A permanent magnet synchronous motor rotor according to claim 1, characterized in that: The elastic rotating mechanism comprises a plug-in block (10), the plug-in block (10) is fixedly connected to the inner cavity of the hollow shaft body (1), and the outer surface of the plug-in block (10) is provided with a plurality of circumferentially distributed insertion holes, one end of the rotating shaft (9) is slidably inserted into the interior of the plug-in block (10), a sliding plate (12) is slidably arranged inside the hollow shaft body (1), a spring (14) is fixedly connected between the plug-in block (10) and the sliding plate (12), the sliding plate (12) is fixedly connected to two symmetrical insertion columns (11) on the outer surface of one side of the plug-in block (10), the two insertion columns (11) are respectively slidably inserted into the interior of the plurality of insertion holes, and the outer surface of the sliding plate (12) away from the plug-in block (10) is fixedly connected to a handle (4).

3. The permanent magnet synchronous motor rotor according to claim 1, characterized in that: A coupling (5) is provided at one end of the hollow shaft body (1), and the coupling (5) is provided on one side of the handle (4), and the handle (4) is provided inside the hollow shaft body (1) on one side of the coupling (5).

4. The permanent magnet synchronous motor rotor according to claim 1, characterized in that: One side of the outer surface of the four insert blocks (15) is in contact with one side of the rotating block (7), and a spacing is provided between one side of the outer surface of the four limit blocks (8) and the other side of the rotating block (7).

5. The permanent magnet synchronous motor rotor according to claim 1, characterized in that: The rotating block (7) and the sliding sheet (12) are both circular blocks, and the diameters of the rotating block (7) and the sliding sheet (12) are both smaller than the inner cavity diameter of the hollow shaft body (1).

6. A permanent magnet synchronous motor rotor according to claim 2, characterized in that: The two ends of the rotating shaft (9) are respectively fixed to one side of the outer surface of the rotating block (7) and the sliding sheet (12), and the spring (14) is sleeved on the outer surface of the rotating shaft (9) between the sliding sheet (12) and the plug-in block (10).

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