Motor rotor shell structure

Abstract

In order to improve the magnetic leakage problem of the existing rotor shell, the utility model provides a motor rotor shell structure, which comprises a rotor shell and a permanent magnet fixed on the inner side of the rotor shell, a window is arranged on the side wall of the rotor shell, a window magnetic shoe is also arranged at the window, a gap is reserved between the window magnetic shoe and the rotor shell, and the permanent magnet is fixed on the inner side of the rotor shell. And an insulating structure is arranged in the gap. According to the utility model, the insulating structure is adopted to keep the window magnetic shoes insulated from the rotor shell, so that the magnetic leakage rate can be reduced, the energy consumption of the motor is reduced, and the overall efficiency of the motor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of generators, in particular to a motor rotor housing structure. Background Art

[0002] The motor is an indispensable and important equipment in modern industry. Its core structure includes two parts: the rotor and the stator. As the rotating part of the motor, the design and construction of the rotor have a decisive influence on the performance and efficiency of the motor. The rotor part of the motor mainly includes the rotor housing and the permanent magnets fixed in the rotor housing. In order to optimize the magnetic circuit design and improve the utilization efficiency of the magnetic field, a window is set on the rotor housing, and a window magnetic tile matching the window is inlaid at the window to improve the utilization rate of the permanent magnet, so that the motor can generate greater torque and output power under the same conditions.

[0003] However, this structure is also prone to magnetic leakage in actual use, which will lead to the loss of magnetic energy and reduce the efficiency of power conversion, thus affecting the overall performance of the motor. Utility Model Content

[0004] The utility model aims to solve the technical problems existing in the prior art and provides a motor rotor housing structure, which can improve the magnetic leakage phenomenon of the existing rotor housing.

[0005] The technical solution of the utility model is achieved through the following measures: a motor rotor housing structure, including a rotor housing and a permanent magnet fixed on the inner side of the rotor housing, a window is provided on the side wall of the rotor housing, a window magnetic tile is also provided at the window, a gap is provided between the window magnetic tile and the rotor housing, and an insulating structure is provided in the gap.

[0006] Furthermore, the insulating structure includes an insulating strip arranged around the periphery of the window magnetic tile.

[0007] Furthermore, the insulating structure includes a plurality of insulating columns arranged around the periphery of the window magnetic tile.

[0008] Furthermore, the width of the gap is 0.4-0.7 mm.

[0009] Furthermore, the window is in a shape of being larger inside and smaller outside.

[0010] In the specific use of the utility model, the motor rotor housing structure includes a rotor housing and a permanent magnet fixed inside the rotor housing, and the rotor housing is used to support the internal permanent magnet; a window is provided on the side wall of the rotor housing, and a window magnetic tile is also provided at the window, and there is a gap between the window magnetic tile and the rotor housing, and an insulating structure is provided in the gap. The insulating structure is used to insulate the window magnetic tile from the rotor housing, so that the magnetic leakage rate can be reduced, thereby reducing the energy consumption of the motor and improving the overall efficiency of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of a first embodiment of a motor rotor housing structure of the utility model;

[0012] Figure 2 This is a schematic diagram of a second embodiment of a motor rotor housing structure of the utility model;

[0013] Reference numerals:

[0014] 100 rotor housing, 110 window, 120 window magnetic tile, 200 insulation structure. DETAILED DESCRIPTION

[0015] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0016] In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection of two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0017] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0018] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0019] In this embodiment, a motor rotor housing (100) structure includes a rotor housing (100) and a permanent magnet fixed inside the rotor housing (100), wherein the rotor housing (100) is used to support the internal permanent magnet; a window (110) is provided on the side wall of the rotor housing (100), and a window magnetic tile (120) is also provided at the window (110), and a gap exists between the window magnetic tile (120) and the rotor housing (100), and an insulating structure (200) is provided in the gap. The insulating structure (200) is used to insulate the window magnetic tile (120) from the rotor housing (100), thereby reducing the magnetic leakage rate, thereby reducing the energy consumption of the motor, and improving the overall efficiency of the motor.

[0020] Furthermore, the insulating structure (200) includes an insulating strip arranged around the window magnetic tile (120), such as a rubber strip or a plastic strip, and the window magnetic tile (120) is isolated from the rotor housing (100) by the insulating strip, thereby ensuring that no magnetic leakage occurs during the operation of the motor.

[0021] Furthermore, the insulating structure (200) includes a plurality of insulating columns arranged around the periphery of the window magnetic tile (120). For example, more than one insulating column is arranged on each of the multiple side surfaces of the window magnetic tile (120), so that insulation between the window magnetic tile (120) and the rotor housing (100) can be achieved. The heat dissipation effect of the motor is also effectively improved, thereby extending the service life of the motor.

[0022] Furthermore, the width of the gap is 0.4-0.7 mm. Using this gap not only facilitates installation, but also can better reduce magnetic leakage and improve motor efficiency.

[0023] Furthermore, the shape of the window (110) is large inside and small outside, which is not only conducive to the stable installation of the window magnetic tile (120), but also can more effectively gather and guide the magnetic field lines, thereby improving the overall performance of the motor. At the same time, this design also helps to reduce wind resistance and eddy current loss, thereby improving the efficiency of the motor.

[0024] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A motor rotor housing (100) structure, characterized in that: The invention comprises a rotor housing (100) and a permanent magnet fixed on the inner side of the rotor housing (100); a window (110) is arranged on the side wall of the rotor housing (100); a window magnetic tile (120) is also arranged at the window (110); a gap exists between the window magnetic tile (120) and the rotor housing (100), and an insulating structure (200) is arranged in the gap.

2. The motor rotor housing (100) structure according to claim 1, characterized in that: The insulating structure (200) comprises an insulating strip arranged around the periphery of the window magnetic tile (120).

3. The motor rotor housing (100) structure according to claim 1, characterized in that: The insulating structure (200) comprises a plurality of insulating columns arranged around the periphery of the window magnetic tile (120).

4. A motor rotor housing (100) structure according to claim 1, 2 or 3, characterized in that: The width of the gap is 0.4-0.7 mm.

5. A motor rotor housing (100) structure according to claim 1, 2 or 3, characterized in that: The window (110) is in a shape of being larger inside and smaller outside.

6. The motor rotor housing (100) structure according to claim 4, characterized in that: The window (110) is in a shape of being larger inside and smaller outside.

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