Integrated outer rotor bracket for motor and motor

Abstract

The utility model provides an integrated external rotor support for a motor and the motor, and relates to the field of external rotor supports, the integrated external rotor support comprises a support, a gear and a bearing chamber, the gear and the bearing chamber are integrally connected to the support, the gear is communicated with the bearing chamber, and the axis of the gear and the axis of the bearing chamber are kept on the same horizontal line; the gear is located in the middle of the outer surface of the support, and the bearing chamber is located in the middle of the inner surface of the support. Through the integrated design of the gear of the support, the concentricity of the rotor support and the center gear is better, the assembling steps can be reduced, the whole machine is easier and more convenient to install, meanwhile, the manufacturing cost is reduced, the transmitted torque is increased, and the better effect is achieved.

Description

Technical Field

[0001] The utility model relates to the field of outer rotor brackets, in particular to an integrated outer rotor bracket for a motor and the motor. Background Art

[0002] After searching, there is a Chinese utility model patent with the patent number: CN217824539U, which discloses an integrated outer rotor motor wave-medium matching structure. In the existing conventional outer rotor motor matching structure, a spring is arranged between the fan blade and the bearing for support, and the structural force of the spring is very small, resulting in a gap between the fan blade and the bearing, which is easy to shift during the operation of the motor. The utility model includes a bracket, one end of the bracket forms a bearing chamber, and the bearing chamber is sequentially arranged with a corrugated meson and a first bearing from the inside to the outside. The outer ring of the corrugated meson is in contact with the outer ring of the first bearing, and the outer end of the first bearing is connected to the shaft and the fan blade. The inner end of the fan blade forms a raised structure, and the raised structure is supported by the inner ring of the first bearing.

[0003] At present, the structure of the outer rotor bracket used for motors is relatively simple, mainly composed of rotor bracket, magnet, bearing and gear, and needs to be assembled. The center gear is matched with the rotor bracket through screws, so when producing the rotor bracket and the center gear, the positioning size of the threaded hole needs to be considered, which can easily cause the problem of excessive concentricity. Excessive concentricity affects the stability of motor transmission, noise and other problems; and the installation process requires two steps. First, the center gear is combined with the rotor bracket through screws, and then the whole is installed on the motor shaft. The threaded hole for the installation of the gear requires an additional process, and the concentricity needs to be guaranteed. Dynamic balancing correction is required after the rotor bracket is manufactured. Utility Model Content

[0004] In view of the defects in the prior art, the purpose of the utility model is to provide an integrated outer rotor bracket for a motor and a motor.

[0005] According to the utility model, an integrated outer rotor bracket for a motor includes a bracket, a gear and a bearing chamber, the gear and the bearing chamber are integrally connected to the bracket, the gear is connected to the bearing chamber, and the axes of the gear and the bearing chamber are maintained on the same horizontal line;

[0006] The gear is located at the middle position of the outer surface of the bracket, and the bearing chamber is located at the middle position of the inner surface of the bracket.

[0007] Preferably, the outer wall of the bracket is cylindrical.

[0008] Preferably, the inner wall of the bracket is polygonal.

[0009] Preferably, the bracket is provided with a weight-reducing hole.

[0010] Preferably, the number of weight-reducing holes is greater than or equal to 2.

[0011] Preferably, the bearing chamber is frustum-shaped.

[0012] Preferably, the length of the bearing chamber is adapted to the width of the bearing.

[0013] Preferably, the gear includes a spur gear or a helical gear.

[0014] A motor includes an integral outer rotor bracket for the motor.

[0015] Preferably, it further includes a motor shaft and a bearing. The motor shaft is inserted into the bracket and the gear, and the motor shaft is in clearance fit with the bearing, and the bearing is in interference fit with the bearing chamber.

[0016] Compared with the prior art, the present utility model has the following beneficial effects:

[0017] (1) Through the integral design of the gear of the bracket in this application, there is no need to consider the positioning problem of threaded holes during manufacturing, which makes the concentricity of the rotor bracket and the central gear better.

[0018] (2) With the integral design in this application, it is directly assembled on the motor shaft, reducing the assembly steps and making the installation of the whole machine more convenient.

[0019] (3) The integral design in this application is combined with weight-reducing holes, reducing the installed parts, saving the part cost and labor cost, increasing the transmitted torque, and bringing better effects. Description of the Drawings

[0020] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, objects, and advantages of the present utility model will become more obvious:

[0021] Figure 1 It is a cross-sectional view of Embodiment 1 of this application;

[0022] Figure 2 It is a structural schematic diagram of this application;

[0023] Figure 3 It is a partial structural schematic diagram in Embodiment 2.

[0024] As shown in the figure: bracket 1, gear 2, bearing chamber 3, weight-reducing hole 4, motor shaft 5, bearing 6. Detailed Embodiments

[0025] The present utility model will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present utility model, but do not limit the present utility model in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several changes and improvements can still be made. These all belong to the protection scope of the present utility model.

[0026] Example 1

[0027] An integrated outer rotor bracket for a motor provided according to the present utility model, as Figure 1-2 shown, includes a bracket 1, a gear 2 and a bearing chamber 3 which are integrally manufactured. The bearing chamber 3 is frustum-shaped, and the length of the bearing chamber 3 is adapted to the width of the bearing. The gear 2 and the bearing chamber 3 are integrally connected to the bracket 1. The gear 2 is located at the middle position of the outer surface of the bracket 1, and the bearing chamber 3 is located at the middle position of the inner surface of the bracket 1. And the gear 2 communicates with the bearing chamber 3, and the axes of the gear 2 and the bearing chamber 3 are on the same horizontal line. The bracket 1 is provided with weight-reducing holes 4, and the number of the weight-reducing holes 4 is greater than or equal to 2. The weight-reducing holes 4 are used for weight reduction and heat dissipation.

[0028] The outer wall of the bracket 1 is cylindrical, and the inner wall of the bracket 1 is polygonal, usually cylindrical. Its main function is to serve as a carrier for the magnetic steel, for fixing the magnetic steel, so that the motor can generate torque when the stator and rotor cooperate. The magnetic steel is generally fixed on the inner wall of the rotor by glue, and the specific quantity and size are determined according to the performance of the motor.

[0029] The gear 2 includes a spur gear or a helical gear, which outputs the torque generated by the outer rotor part through a transmission mechanism in the form of a gear. The parameters of the gear are determined according to the overall performance requirements of the motor.

[0030] Example 2

[0031] A motor includes the integrated outer rotor bracket for a motor in Embodiment 1, as Figure 3 shown, and further includes a motor shaft 5 and a bearing 6. The motor shaft is inserted into the bracket 1 and the gear 2, and the motor shaft 5 has a clearance fit with the bearing 6, and the bearing 6 has an interference fit with the bearing chamber 3.

[0032] Working principle: The motor shaft 5 and the integrated outer rotor bracket are connected by the bearing 6. After connection, by controlling the power on and off of the stator coil through the motor controller, a magnetic field change is generated, and the magnetic steel on the rotor generates torque through magnetic attraction.

[0033] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0034] The specific embodiments of the present utility model have been described above. It should be understood that the present utility model is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present utility model. Without conflict, the embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other.

Claims

1. An integrated outer rotor bracket for a motor, characterized in that, It includes a bracket (1), a gear (2), and a bearing chamber (3). The gear (2) and the bearing chamber (3) are integrally connected to the bracket (1), and the gear (2) communicates with the bearing chamber (3), and the axes of the gear (2) and the bearing chamber (3) are on the same horizontal line; The gear (2) is located at the middle position on the outer surface of the bracket (1), and the bearing chamber (3) is located at the middle position on the inner surface of the bracket (1).

2. The integrated outer rotor bracket for a motor according to claim 1, characterized in that, The outer wall of the bracket (1) is cylindrical.

3. The integrated outer rotor bracket for a motor according to claim 1, characterized in that, The inner wall of the bracket (1) is polygonal.

4. The integrated outer rotor bracket for a motor according to claim 1, characterized in that, The bracket (1) is provided with weight-reducing holes (4).

5. The integrated outer rotor bracket for a motor according to claim 4, characterized in that, The number of the weight-reducing holes (4) is greater than or equal to 2.

6. The integrated outer rotor bracket for a motor according to claim 1, characterized in that, The bearing chamber (3) is frustum-shaped.

7. The integrated outer rotor bracket for a motor according to claim 1, characterized in that, The length of the bearing chamber (3) is adapted to the width of the bearing.

8. The integrated outer rotor bracket for a motor according to claim 1, characterized in that, The gear (2) includes a spur gear or a helical gear.

9. A motor, characterized in that, It includes the integral outer rotor bracket for a motor according to any one of claims 1-8.

10. A motor according to claim 9, characterized in that, It further includes a motor shaft (5) and a bearing (6). The motor shaft (5) is inserted into the bracket (1) and the gear (2), and the motor shaft (5) is in clearance fit with the bearing (6), and the bearing (6) is in interference fit with the bearing chamber (3).

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