Rotor concentricity maintaining structure applied to motor

Abstract

The rotor concentricity maintaining structure applied to the motor comprises a casing, a first shaft hole is formed in the center of the bottom of the casing; the stator is fixedly arranged on the inner wall of the shell; the fixed support is fixedly arranged at the opening end of the machine shell and is coaxial with the machine shell; the bearing support is fixedly arranged on the fixed support and is coaxial with the fixed support, and a second shaft hole is formed in the center of the bearing support; the rotor is arranged in the machine shell, one end of the rotor penetrates through the first shaft hole and is rotationally connected with the machine shell, and the other end of the rotor penetrates through the second shaft hole and is rotationally connected with the bearing support. According to the rotor concentricity maintaining structure applied to the motor provided by the utility model, the fixed bracket and the casing are coaxially and fixedly arranged, and then the bearing bracket and the fixed bracket are coaxially and fixedly arranged, so that the coaxiality of the first shaft hole and the second shaft hole can be ensured, the concentricity of the rotor and the stator can be further ensured, and the rotor concentricity maintaining structure applied to the motor is simple and ingenious in structure and high in practicability. And popularization and use are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a rotor concentricity maintaining structure used in motors. Background Art

[0002] The electric motor, commonly known as "motor", refers to an electromagnetic device that converts electrical energy based on electromagnetic induction. Currently, electric motors are widely used and are ubiquitous in industrial production, home life, and transportation. They are widely used in various types of transportation, such as electric bicycles and electric vehicles.

[0003] At present, most motors are composed of a housing, a stator, a rotor, a bearing bracket and an end cover. The stator is fixed on the inner wall of the housing, the bearing bracket is fixed on the stator, and the rotor is arranged in the housing. One end extends out of the housing and is rotatably connected to the housing, and the other end is rotatably connected to the bearing bracket. The end cover is arranged on the bearing bracket. The stator is usually composed of multiple groups of stacked cores. As the demand for motor power continues to increase, the number of cores that make up the stator is gradually increasing. As the number of cores increases, due to the existence of cumulative tolerances, the concentricity of the two ends of the stator is difficult to ensure. The bearing bracket under the existing technology is based on the stator, so there will be a problem of poor installation accuracy of the bearing bracket, and it is difficult to ensure the installation accuracy of the rotor.

[0004] Therefore, in view of the shortcomings of the prior art, it is necessary to design a rotor concentricity maintaining structure used in the motor to solve the above problems. Utility Model Content

[0005] In order to overcome the above-mentioned deficiencies in the prior art, the utility model aims to provide a rotor concentricity maintaining structure used in a motor.

[0006] In order to achieve the above-mentioned purpose and other related purposes, the technical solution provided by the utility model is: a rotor concentricity maintaining structure applied to a motor, comprising:

[0007] A casing, wherein a first axial hole is provided at the bottom center of the casing;

[0008] A stator, the stator being fixed on the inner wall of the casing;

[0009] A fixed bracket, the fixed bracket is fixedly arranged at the open end of the housing and is coaxially arranged with the housing;

[0010] A bearing bracket, the bearing bracket is fixed on the fixing bracket and is coaxially arranged with the fixing bracket, and a second axial hole is provided at the center of the bearing bracket;

[0011] The rotor is arranged in the casing, one end of the rotor passes through the first shaft hole and is rotatably connected to the casing, and the other end of the rotor passes through the second shaft hole and is rotatably connected to the bearing bracket.

[0012] The preferred technical solution is: the casing is configured as a barrel-shaped structure, the fixing bracket is configured as a circular ring structure, and one end of the fixing bracket is embedded and fixed in the opening end of the casing.

[0013] The preferred technical solution is: the fixing bracket is provided with a plurality of first screw holes arranged at equal angles, the bearing bracket is provided with a plurality of second screw holes arranged at equal angles, and the plurality of first screw holes and the plurality of second screw holes are arranged in one-to-one correspondence and fixed by screws.

[0014] Due to the application of the above technical solution, the utility model has the following beneficial effects:

[0015] The utility model provides a rotor concentricity maintaining structure for use in a motor. By setting a fixed bracket coaxially fixed to the casing, and then coaxially fixing the bearing bracket to the fixed bracket, the coaxiality of the first axial hole and the second axial hole can be ensured, and the concentricity of the rotor and the stator can be ensured. The structure is simple and ingenious and is suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the retaining structure involved in the utility model. DETAILED DESCRIPTION

[0017] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0018] See also Figure 1 . It should be noted that in the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model 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 cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0019] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] Example:

[0021] like Figure 1 As shown, according to an overall technical concept of the utility model, a rotor concentricity maintaining structure applied to a motor is provided, comprising:

[0022] The first axial hole is provided at the bottom center of the casing 1 and the casing 2;

[0023] The stator 2 is fixed on the inner wall of the casing 1;

[0024] A fixed bracket 3, the fixed bracket 3 is fixedly arranged at the open end of the housing 1 and is coaxially arranged with the housing 1;

[0025] A bearing bracket 4, the bearing bracket 4 is fixed on the fixing bracket 3 and is coaxially arranged with the fixing bracket 3, and a second axial hole 41 is arranged at the center of the bearing bracket 4;

[0026] The rotor (not shown) is disposed in the casing 1 , one end of the rotor passes through the first shaft hole and is rotatably connected to the casing 1 , and the other end of the rotor passes through the second shaft hole 41 and is rotatably connected to the bearing bracket 4 .

[0027] like Figure 1 As shown, in an exemplary embodiment of the utility model, the casing 1 is configured as a barrel-shaped structure, the fixing bracket 3 is configured as a circular ring structure, and the outer ring of one end of the fixing bracket 3 is embedded and fixed in the inner ring of the open end of the casing 1; the above structure is used to ensure the coaxiality between the fixing bracket 3 and the casing 1.

[0028] like Figure 1 As shown, in an exemplary embodiment of the utility model, a plurality of first screw holes 31 arranged at equal angles are provided on the fixed bracket 3 along the circumference, and a plurality of second screw holes 42 arranged at equal angles are provided on the bearing bracket 4 along the circumference, and the plurality of first screw holes 31 and the plurality of second screw holes 42 are arranged one by one in correspondence and fixed by screws; the above structure is used to realize the fixed connection between the bearing bracket 4 and the fixed bracket 3 and to ensure the coaxiality.

[0029] Therefore, the utility model has the following advantages:

[0030] The utility model provides a rotor concentricity maintaining structure for use in a motor. By setting a fixed bracket coaxially fixed to the casing, and then coaxially fixing the bearing bracket to the fixed bracket, the coaxiality of the first axial hole and the second axial hole can be ensured, and the concentricity of the rotor and the stator can be ensured. The structure is simple and ingenious and is suitable for popularization and use.

[0031] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A rotor concentricity maintaining structure used in a motor, characterized in that: include: A casing, wherein a first axial hole is provided at the bottom center of the casing; A stator, the stator being fixed on the inner wall of the casing; A fixed bracket, the fixed bracket is fixedly arranged at the open end of the housing and is coaxially arranged with the housing; A bearing bracket, the bearing bracket is fixed on the fixing bracket and is coaxially arranged with the fixing bracket, and a second axial hole is provided at the center of the bearing bracket; The rotor is arranged in the casing, one end of the rotor passes through the first shaft hole and is rotatably connected to the casing, and the other end of the rotor passes through the second shaft hole and is rotatably connected to the bearing bracket.

2. The rotor concentricity maintaining structure used in a motor according to claim 1, characterized in that: The housing is configured as a barrel-shaped structure, the fixing bracket is configured as a circular ring structure, and one end of the fixing bracket is embedded and fixed in the opening end of the housing.

3. The rotor concentricity maintaining structure used in a motor according to claim 1, characterized in that: The fixing bracket is provided with a plurality of first screw holes arranged at equal angles, and the bearing bracket is provided with a plurality of second screw holes arranged at equal angles. The plurality of first screw holes and the plurality of second screw holes are arranged in one-to-one correspondence and are fixed by screws.

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