Outer rotor motor mounting structure

Abstract

The utility model relates to an external rotor motor installation structure, comprising a motor, a support and a rubber sleeve, the rubber sleeve is tightly sleeved on a main shaft of the motor, the support is tightly buckled outside the rubber sleeve, and two sides of the support are provided with fixing holes; a positioning pin A is further arranged on the support at one end of the main shaft, penetrates through the rubber sleeve and the main shaft, is in a stepped column shape and is formed by connecting two cylinders with different diameters, a through hole B and a through hole A are formed in the main shaft and the rubber sleeve respectively, and the hole diameter of the through hole B and the hole diameter of the through hole A are the same as the outer diameters of the two cylinders of the positioning pin A. According to the utility model, the end part of the motor main shaft is provided with the support, the support is provided with the stepped-column-shaped positioning pin A, the stepped-column-shaped positioning pin A can be more conveniently inserted into the rubber sleeve and the main shaft during installation, and the lower half part of the positioning pin A is matched with the through hole B of the main shaft, so that the main shaft is prevented from rotating in the radial direction and moving in the axial direction; and the upper half part of the positioning pin A is matched with the through hole A of the rubber sleeve to prevent the rubber sleeve from axially moving when the motor runs.

Description

Technical Field

[0001] The utility model belongs to the technical field of outer rotor motors, and in particular relates to an outer rotor motor installation structure. Background Art

[0002] The outer rotor motor is a special specification of a single-phase asynchronous motor. Contrary to the general motor, the rotor is outside and the stator is inside. Its advantages are large moment of inertia, good heat dissipation, saving copper wire, and meeting the installation size requirements of a small volume machine with a certain power. When the motor size is the same, the rotor diameter of the inner rotor is not as large as the outer rotor, the torque is generally proportional to L, and the outer rotor can generate a large torque at low speed. The outer rotor has a large moment of inertia, which is conducive to steady speed operation. On the contrary, when frequent starting and stopping or frequent speed adjustment is required, including transient operation, it is not suitable to use an outer rotor motor.

[0003] The existing external rotor motor has a single installation and fixing method. When the motor rotates, it vibrates and makes a lot of noise. It is easy to spin and move axially. It has low stability and poor practicality. Utility Model Content

[0004] In order to solve the above technical problems, the purpose of the utility model is to provide an outer rotor motor installation structure, which can prevent radial rotation and axial movement of the motor main shaft.

[0005] In order to achieve the above-mentioned utility model purpose, the utility model adopts the following technical solutions:

[0006] An outer rotor motor mounting structure includes a motor, a bracket and a rubber sleeve, wherein the rubber sleeve is tightly sleeved on the main shaft of the motor, the bracket is tightly buckled outside the rubber sleeve, and fixing holes are provided on both sides; a locating pin A is also provided on the bracket at one end of the main shaft, and the locating pin A passes through the rubber sleeve and the main shaft, and the locating pin A is in the shape of a stepped column and is formed by connecting two cylinders with different diameters. A through hole B and a through hole A are respectively provided on the main shaft and the rubber sleeve, and the apertures of the through hole B and the through hole A are respectively the same as the outer diameters of the two cylinders of the locating pin A.

[0007] As a preferred solution: a positioning pin B is further provided on the bracket at the other end of the main shaft, and the positioning pin B passes through the rubber sleeve.

[0008] As a preferred solution: the positioning pin A and the positioning pin B are integrally formed with the bracket, and the positioning pin A and the positioning pin B are both arranged perpendicular to the main axis.

[0009] As a preferred solution: a notch is provided on the main shaft of the motor, and a step is formed inside the notch, and the rubber sleeve abuts against the step.

[0010] As a preferred solution: the rubber sleeve is further provided with a through hole for inserting the main shaft, and the cross-sectional shape of the through hole is the same as that of the main shaft.

[0011] As a preferred solution: the rubber sleeve is in the shape of a cuboid or a cube as a whole.

[0012] As a preferred solution: the bracket is in an inverted U shape as a whole, and horizontal flanges are formed on both sides, and the fixing holes are arranged on the horizontal flanges.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model provides a bracket at the end of the motor spindle, and a stepped columnar locating pin A is provided on the bracket. The stepped columnar locating pin A is more convenient to insert into the rubber sleeve and the spindle during installation. At the same time, the lower half of the locating pin A cooperates with the through hole B of the spindle to prevent the spindle from radial rotation and axial movement; the upper half of the locating pin A cooperates with the through hole A of the rubber sleeve to prevent the rubber sleeve from axial displacement when the motor is running. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute a limitation on the present application.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the disassembled structure of the main shaft, rubber sleeve and bracket at one end of the motor of the utility model;

[0018] Figure 3 It is a schematic diagram of the disassembled structure of the main shaft, rubber sleeve and bracket at the other end of the motor of the utility model;

[0019] Figure 4 It is a schematic diagram of the assembly structure of the positioning pin A and the main shaft of the utility model.

[0020] The figures are marked as follows: 1. motor; 2. main shaft; 21. step; 22. through hole B; 3. bracket; 31. positioning pin A; 32. positioning pin B; 4. rubber sleeve; 41. through hole A. DETAILED DESCRIPTION

[0021] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0022] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0023] In addition, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships 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 referred device or element 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.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or 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.

[0026] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0028] like Figures 1 to 4 As shown, an external rotor motor mounting structure includes a motor 1, a bracket 3 and a rubber sleeve 4, wherein the rubber sleeve 4 is tightly sleeved on the main shaft 2 of the motor 1, and the bracket 3 is tightly buckled outside the rubber sleeve 4, and fixing holes are provided on both sides; a positioning pin A31 is also provided on the bracket 3 at one end of the main shaft 2, and the positioning pin A31 passes through the rubber sleeve 4 and the main shaft 2, and the positioning pin A31 is a stepped columnar shape, formed by connecting two cylinders with different diameters, and a through hole B22 and a through hole A41 are respectively opened on the main shaft 2 and the rubber sleeve 4, and the apertures of the through hole B22 and the through hole A41 are respectively the same as the outer diameters of the two cylinders of the positioning pin A31. A positioning pin B32 is also provided on the bracket 3 at the other end of the main shaft 2, and the positioning pin B32 passes through the rubber sleeve 4.

[0029] The positioning pin A of the bracket at one end can prevent the main shaft from radial rotation and axial movement, and can also prevent the axial displacement of the rubber sleeve when the motor is running, while the positioning pin B on the bracket at the other end only needs to prevent the displacement of the rubber sleeve, which can simplify the installation process. That is, the positioning pins of different shapes are used at both ends, which ensures that the main shaft will not move radially and axially, and avoids the problem of installation difficulties caused by tight fit, thereby improving installation efficiency.

[0030] The positioning pin A31 and the positioning pin B32 are integrally formed with the bracket 3 , and the positioning pin A31 and the positioning pin B32 are both arranged perpendicular to the main shaft 2 .

[0031] The main shaft 2 of the motor 1 is provided with two notches, which are symmetrically arranged, so that the main shaft has a circular cross section at the rear end and a runway-shaped cross section at the front end (with planes on both sides and arc surfaces at both ends), and a step 21 is formed on the inner side (transition) of the notch, and the rubber sleeve 4 abuts against the step 21. The main shaft with a runway-shaped cross section is easier to hold and less likely to slip than a cylindrical main shaft.

[0032] The rubber sleeve 4 is also provided with a through hole for the spindle 2 to be inserted, and the cross-sectional shape of the through hole is the same as the cross-sectional shape of the spindle 2. The rubber sleeve 4 is in the shape of a cuboid or a cube as a whole. The bracket 3 is in an inverted U shape as a whole, and horizontal flanges are formed on both sides, and the fixing holes are arranged on the horizontal flanges. The inner hole of the rubber sleeve is tightly matched with the spindle, and the outer wall is tightly matched with the bracket, which can not only prevent the radial and axial movement of the spindle, but also perform a certain buffering and shock-absorbing effect.

[0033] The mounting structure of the utility model can not only support the motor as a whole, but also prevent the main shaft from radially rotating when the motor load is large, prevent the motor from falling during transportation and axial movement of the motor when the motor is running, and prevent the rubber pad from axially shifting when the motor is running.

[0034] 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.

[0035] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An external rotor motor mounting structure, comprising a motor (1), a bracket (3) and a rubber sleeve (4), wherein the rubber sleeve (4) is tightly sleeved on a main shaft (2) of the motor (1), and the bracket (3) is tightly buckled outside the rubber sleeve (4), and fixing holes are provided on both sides; characterized in that: A positioning pin A (31) is also provided on the bracket (3) at one end of the main shaft (2). The positioning pin A (31) passes through the rubber sleeve (4) and the main shaft (2). The positioning pin A (31) is in the shape of a stepped column and is formed by connecting two cylinders with different diameters. A through hole B (22) and a through hole A (41) are respectively provided on the main shaft (2) and the rubber sleeve (4). The diameters of the through hole B (22) and the through hole A (41) are respectively the same as the outer diameters of the two cylinders of the positioning pin A (31). A positioning pin B (32) is also provided on the bracket (3) at the other end of the main shaft (2), and the positioning pin B (32) passes through the rubber sleeve (4); The positioning pin A (31) and the positioning pin B (32) are integrally formed with the bracket (3), and the positioning pin A (31) and the positioning pin B (32) are both arranged perpendicular to the main shaft (2).

2. The outer rotor motor mounting structure according to claim 1, characterized in that: A notch is provided on the main shaft (2) of the motor (1), and a step (21) is formed inside the notch, and the rubber sleeve (4) abuts against the step (21).

3. The outer rotor motor mounting structure according to claim 1, characterized in that: The rubber sleeve (4) is also provided with a through hole for the main shaft (2) to be inserted, and the cross-sectional shape of the through hole is the same as the cross-sectional shape of the main shaft (2).

4. The outer rotor motor mounting structure according to claim 1, characterized in that: The rubber sleeve (4) is in the shape of a cuboid or a cube as a whole.

5. The outer rotor motor mounting structure according to claim 1, characterized in that: The bracket (3) is in an inverted U shape as a whole, and has horizontal flanges formed on both sides, and the fixing holes are arranged on the horizontal flanges.

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