Motor rotor

Abstract

The utility model discloses a motor rotor, which comprises an iron core, a plurality of magnetic steels are arranged on the surface of the iron core, a connecting piece is arranged between the magnetic steels and the iron core, a reinforcing piece is arranged in the iron core, and an abutting piece is arranged on one side of the iron core. According to the utility model, when a plurality of magnetic steels are connected with the iron core, an adhesive is respectively injected into the plurality of insertion grooves and the butt joint groove, then the connecting plate on the magnetic steels slides into the insertion grooves, and under the extrusion action of the connecting plate, part of the adhesive is extruded into the middle hole and finally falls into the butt joint groove for reuse. After solidification, the adhesive in the middle hole is columnar to provide additional fixing force, so that the magnetic steel and the iron core are connected through a plurality of points (namely the columnar adhesive) instead of simple plane contact, the connection tightness is remarkably improved through the design, and when the insertion plate is inserted into the butt joint groove, the magnetic steel and the iron core are connected through the columnar adhesive at the same time. And the part of the fixing ring is clamped with the inner cavity of the ring groove.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and particularly relates to a motor rotor. Background Art

[0002] The motor rotor, as the core rotating component in the motor, is the key part for the motor to realize the conversion between electrical energy and mechanical energy. The motor rotor refers to the rotating part in the motor. According to the type of the motor, the motor rotor can be divided into a motor rotor and a generator rotor. There are mainly two rotation modes of the rotor: the inner rotor rotation mode and the outer rotor rotation mode. In the inner rotor rotation mode, the core in the middle of the motor is the rotating body, while in the outer rotor rotation mode, the outer body of the motor is the rotating body. In the brushless DC motor, the structure of the rotor is relatively special, which is composed of a certain number of permanent magnets with a certain number of pole pairs embedded on the surface of the iron core or embedded inside the iron core. The permanent magnets are mostly made of rare earth permanent magnet materials such as neodymium iron boron with high coercivity and high remanence induction density.

[0003] The rotor is composed of a certain number of permanent magnets (magnetic steels) installed on the surface of the iron core. Currently, the magnetic steels and the iron core are generally bonded with an adhesive. Since the connection of the bonding surface between the magnetic steels and the iron core is relatively tight, the adhesive is extruded when they are connected, resulting in a reduction in the adhesion effect. When rotating at a high speed, loosening may occur, and in severe cases, detachment may occur. Therefore, a motor rotor is proposed. Summary of the Utility Model

[0004] Based on this, in view of the above technical problems, it is necessary to provide a motor rotor to improve the adhesion effect after the magnetic steel and the iron core are assembled.

[0005] In order to solve the above technical problems, the utility model solves the problems raised in the above background art through the following technical solutions.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A motor rotor, which includes:

[0008] An iron core, on the surface of which a plurality of magnetic steels are arranged;

[0009] A connecting piece, which is placed between the magnetic steel and the iron core. A reinforcing piece is arranged inside the iron core, and a resisting piece is arranged on one side of the iron core.

[0010] As a preferred implementation manner of the motor rotor provided by the utility model, the connecting piece includes a plurality of insertion grooves opened on the surface of the iron core, and a connecting plate is slidably connected to the inner cavity of each of the plurality of insertion grooves.

[0011] As a preferred embodiment of the motor rotor provided by the present utility model, the plurality of insertion grooves are distributed in an annular array, and the plurality of connecting plates are respectively fixedly connected to the plurality of magnetic steels.

[0012] As a preferred embodiment of the motor rotor provided by the present utility model, the reinforcing member includes a plurality of docking grooves opened on one side wall of the iron core, and a communication hole is opened on one side of the inner wall of the docking groove.

[0013] As a preferred embodiment of the motor rotor provided by the present utility model, the communication hole is communicated with the outside of the iron core, and a plurality of middle holes are opened on the other side of the inner wall of the docking groove.

[0014] As a preferred embodiment of the motor rotor provided by the present utility model, the inner cavity of the docking groove is communicated with the inner cavity of the corresponding insertion groove through a plurality of middle holes.

[0015] As a preferred embodiment of the motor rotor provided by the present utility model, a plug board is slidably connected to the inner cavity of the docking groove.

[0016] As a preferred embodiment of the motor rotor provided by the present utility model, the abutting member includes an annular groove opened in the middle of one side wall of the iron core, and the annular groove is communicated with the inner cavities of the plurality of docking grooves.

[0017] As a preferred embodiment of the motor rotor provided by the present utility model, a fixing ring is snap-fitted in the inner cavity of the annular groove, and the fixing ring is fixedly connected to one end of the plurality of plug boards.

[0018] As a preferred embodiment of the motor rotor provided by the present utility model, a plurality of abutting blocks are fixedly connected to one side wall of the fixing ring, and the plurality of abutting blocks are respectively placed at one end of the plurality of connecting plates.

[0019] Compared with the prior art, the present utility model has the following beneficial effects:

[0020] 1. For the motor rotor provided by the present utility model, when connecting the plurality of magnetic steels to the iron core, the adhesive is respectively injected into the plurality of insertion grooves and docking grooves, and then the connecting plates on the magnetic steels are slid into the insertion grooves. Under the extrusion of the connecting plates, part of the adhesive will be squeezed into the middle holes and finally fall into the docking grooves for reuse. After solidification, the adhesive in the middle holes forms a column shape, providing additional fixing force, so that the connection between the magnetic steel and the iron core is no longer a simple planar contact, but a connection through a plurality of points (i.e., columnar adhesives). This design significantly improves the tightness of the connection.

[0021] 2. For a motor rotor provided by the present utility model, when the insertion plate is inserted into the docking groove, a part of the fixing ring will be engaged with the inner cavity of the ring groove, and a plurality of abutting blocks placed on the fixing ring will abut against one end of the connecting plate, further preventing the magnetic steel from detaching from the iron core. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 It is a three-dimensional structure schematic diagram of the whole provided by the present utility model;

[0024] Figure 2 It is a three-dimensional structure schematic diagram of the partial disassembly provided by the present utility model;

[0025] Figure 3 It is a three-dimensional structure schematic diagram of the disassembly of the iron core and the abutting object provided by the present utility model;

[0026] Figure 4 It is a two-dimensional schematic diagram of the front of the iron core provided by the present utility model;

[0027] Figure 5 It is a three-dimensional structure schematic diagram of the rear view provided by the present utility model;

[0028] Figure 6 It is a cross-sectional view of the iron core provided by the present utility model.

[0029] The markings in the figures are explained as follows:

[0030] 1. Iron core; 2. Magnetic steel; 3. Connecting piece; 31. Insertion groove; 32. Connecting plate; 4. Reinforcing piece; 41. Docking groove; 42. Communication hole; 43. Middle hole; 44. Insertion plate; 5. Abutting object; 51. Ring groove; 52. Fixing ring; 53. Abutting block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] In order to enable those skilled in the art to better understand the solutions of the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0032] Embodiment 1

[0033] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 , a motor rotor, a core 1, and a plurality of magnetic steel 2 are arranged on the surface of the core 1;

[0034] A connecting member 3 is disposed between the magnetic steel 2 and the core 1. A reinforcing member 4 is arranged inside the core 1, and an abutting member 5 is arranged on one side of the core 1.

[0035] In an embodiment of the present application, the connecting member 3 includes a plurality of insertion grooves 31 formed on the surface of the core 1. A connecting plate 32 is slidably connected to the inner cavity of each of the plurality of insertion grooves 31. The shapes of the insertion grooves 31 and the connecting plate 32 are "T" shaped. One end and the top of the insertion groove 31 are communicated with the outside. The plurality of insertion grooves 31 are distributed in an annular array. The plurality of connecting plates 32 are respectively fixedly connected to the plurality of magnetic steel 2. The reinforcing member 4 includes a plurality of docking grooves 41 formed on one side wall of the core 1. The plurality of docking grooves 41 are respectively adjacent to the positions of the plurality of insertion grooves 31. A communication hole 42 is formed on one side of the inner wall of the docking groove 41 to facilitate the discharge of the redundant adhesive in the docking groove 41. The communication hole 42 is communicated with the outside of the core 1. A plurality of middle holes 43 are formed on the other side of the inner wall of the docking groove 41 to make full use of the extruded adhesive and improve the adhesion effect of the magnetic steel 2. The inner cavity of the docking groove 41 is communicated with the inner cavity of the corresponding insertion groove 31 through a plurality of middle holes 43. An insertion plate 44 is slidably connected to the inner cavity of the docking groove 41.

[0036] In an embodiment of the present application, the abutting member 5 includes an annular groove 51 formed in the middle of one side wall of the core 1. The annular groove 51 is communicated with the inner cavities of the plurality of docking grooves 41. A fixing ring 52 is snap-fitted into the inner cavity of the annular groove 51. One end of the fixing ring 52 is fixedly connected to the plurality of insertion plates 44. A plurality of abutting blocks 53 are fixedly connected to one side wall of the fixing ring 52. The plurality of abutting blocks 53 are distributed in an annular array. When the fixing ring 52 is snapped into the annular groove 51, the plurality of abutting blocks 53 just block one end of the plurality of insertion grooves 31 to further limit the connecting plate 32. The plurality of abutting blocks 53 are respectively disposed at one end of the plurality of connecting plates 32.

[0037] The usage process of a motor rotor provided by the present utility model is as follows: First, the staff evenly inject an adhesive into the outer parts of the inner cavities of a plurality of insertion grooves 31 and a plurality of docking grooves 41 respectively. Then, a plurality of magnetic steel 2s are slid into the depths from one side of the insertion groove 31 through the connecting plate 32. While the connecting plate 32 moves, the adhesive will be squeezed into the gap between the insertion groove 31 and the connecting plate 32, and part of the adhesive will be squeezed into the inner cavities of a plurality of middle holes 43. After the magnetic steel 2 is connected to the iron core 1, the fixing ring 52 can be moved so that a plurality of insertion plates 44 enter the docking grooves 41 respectively. The adhesive therein will penetrate between the docking groove 41 and the insertion plate 44, and the excess part will be extruded from the communication hole 42. The fixing ring 52 is finally engaged with the ring groove 51, and the abutting block 53 will abut against one end of the connecting plate 32 to reinforce the connection between the iron core 1 and the magnetic steel 2, and then wait for it to solidify.

[0038] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0039] Obviously, the above-described embodiments are only part of the embodiments of the present utility model, rather than all embodiments. The accompanying drawings show the preferred embodiments of the present utility model, but do not limit the patent scope of the present utility model. The present utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present utility model more thorough and comprehensive. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing specific embodiments, or perform equivalent replacements on some of the technical features. Any equivalent structure directly or indirectly using the content of the specification and drawings of the present utility model in other related technical fields is equally within the scope of the patent protection of the present utility model.

Claims

1. A motor rotor, characterized in that: It includes: An iron core (1), wherein a plurality of magnetic steels (2) are arranged on the surface of the iron core (1); A connecting piece (3) is disposed between the magnetic steel (2) and the iron core (1); a reinforcing piece (4) is disposed inside the iron core (1); and a resisting piece (5) is disposed on one side of the iron core (1).

2. A motor rotor according to claim 1, characterized in that: The connecting member (3) comprises a plurality of insertion slots (31) formed on the surface of the iron core (1), and the inner cavities of the plurality of insertion slots (31) are all slidably connected to a connecting plate (32).

3. A motor rotor according to claim 2, characterized in that: The plurality of insertion slots (31) are distributed in a ring array, and the plurality of connection plates (32) are respectively fixedly connected to the plurality of magnetic steels (2).

4. The motor rotor according to claim 1, characterized in that: The reinforcement member (4) comprises a plurality of docking grooves (41) formed on a side wall of the iron core (1), and a communication hole (42) is formed on one side of an inner wall of the docking groove (41).

5. The motor rotor according to claim 4, characterized in that: The communicating hole (42) is connected to the outside of the iron core (1), and a plurality of middle holes (43) are provided on the other side of the inner wall of the docking groove (41).

6. The motor rotor according to claim 4, characterized in that: The inner cavity of the docking groove (41) is connected to the inner cavity of the corresponding insertion groove (31) through a plurality of middle holes (43).

7. The motor rotor according to claim 4, characterized in that: The inner cavity of the docking groove (41) is slidably connected with an inserting plate (44).

8. The motor rotor according to claim 2, characterized in that: The abutment member (5) comprises an annular groove (51) formed in the middle of a side wall of the iron core (1), wherein the annular groove (51) is communicated with inner cavities of a plurality of docking grooves (41).

9. The motor rotor according to claim 8, characterized in that: A fixing ring (52) is snap-connected to the inner cavity of the annular groove (51), and the fixing ring (52) is fixedly connected to one end of a plurality of insert plates (44).

10. The motor rotor according to claim 9, characterized in that: A plurality of stop blocks (53) are fixedly connected to one side wall of the fixing ring (52), and the plurality of stop blocks (53) are respectively disposed on one end portion of a plurality of connecting plates (32).

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