A hollow shaft outer rotor motor and a roller device

Abstract

The utility model discloses a hollow shaft outer rotor motor, including the casing, be equipped with rotor subassembly and stator in the casing, stator and casing fixed connection, still include as motor output shaft's hollow rotating shaft, rotor subassembly and hollow rotating shaft fixed connection. The utility model discloses a kind of rotating roller devices, it includes rotating roller and as aforementioned hollow shaft outer rotor motor, the transmission shaft of this rotating roller is inserted into the hollow rotating shaft of hollow shaft outer rotor motor, and transmission shaft is connected with hollow rotating shaft. The utility model can reduce the volume of equipment, reduce space occupancy.

Description

Technical Field

[0001] This utility model belongs to the field of motor technology, specifically relating to a hollow shaft external rotor motor and a roller device. Background Technology

[0002] In the logistics field, conveyor belt rollers are generally driven by motors. Some of these rollers are connected to the motors via speed reducers, resulting in a large overall size of the equipment and requiring a lot of space. Utility Model Content

[0003] To address the aforementioned issues, this invention provides a hollow shaft external rotor motor, which can reduce the size of the equipment and minimize space occupation.

[0004] The embodiments of this utility model are achieved through the following technical solutions:

[0005] A hollow shaft external rotor motor includes a housing, a rotor assembly and a stator disposed inside the housing, the stator being fixedly connected to the housing, and a hollow shaft serving as the motor output shaft, the rotor assembly being fixedly connected to the hollow shaft.

[0006] In one embodiment of the present invention, the rotor assembly includes a rotor fixedly connected to the hollow shaft. The rotor has a barrel-shaped structure, and a permanent magnet is installed on the barrel wall of the rotor.

[0007] In one embodiment of this utility model, the housing is provided with a stator seat, the stator is fixedly connected to the stator seat, and the stator seat is also provided with a bearing for mounting the hollow rotating shaft.

[0008] In one embodiment of this utility model, the stator base is provided with a limiting ring, which cooperates with the stator and limits the installation position of the stator.

[0009] In one embodiment of the present invention, the housing further includes an end cover and an outer sealing ring cover; the end cover is parallel to the vertical surface of the stator base; the outer sealing ring cover is located between the end cover and the stator base, and the outer sealing ring cover is fixed to the end cover and the stator base respectively.

[0010] In one embodiment of this utility model, at least one of the stator base, the end cover, and the outer sealing ring cover is provided with a heat dissipation part.

[0011] A rotating roller device includes a rotating roller and a hollow shaft external rotor motor as described above, wherein the drive shaft of the rotating roller is inserted into the hollow shaft of the hollow shaft external rotor motor, and the drive shaft is connected to the hollow shaft.

[0012] The technical solution of this utility model has at least the following advantages and beneficial effects:

[0013] This utility model adopts a hollow shaft structure. During installation, the hollow shaft can be directly connected to the drive shaft of the load to transmit power, reducing the size of the equipment and the space occupied. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram showing the connection between the hollow shaft external rotor motor and the load transmission shaft in this utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the back of a hollow shaft external rotor motor;

[0017] Figure 3 This is a cross-sectional view of the hollow shaft external rotor motor of this utility model;

[0018] Figure 4 This is a cross-sectional view of the hollow shaft external rotor motor of this utility model, omitting the outer sealing ring cover and end cover;

[0019] Figure 5 This is a schematic diagram of the stator base and stator in the hollow shaft external rotor motor of this utility model;

[0020] Figure 6 This is a schematic diagram of the stator base in the hollow shaft external rotor motor of this utility model.

[0021] Icons: 1-House, 11-Stator base, Elevation-111, 12-End cover, 13-Outer sealing ring cover, 14-Limiting ring, 2-Hollow shaft, 31-Rotor, 4-Stator, 5-Support structure, 51-Motor bracket, 52-Connector, 61-Motor winding coil, 62-Permanent magnet, 7-Heat dissipation unit. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this utility model, it should be noted that if terms such as "inner" or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "configure," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Example 1

[0028] Please refer to Figure 1-6A hollow shaft external rotor motor includes a housing 1 and a hollow rotating shaft 2. The drive shaft of the load is connected to the hollow rotating shaft 2 by a key. The load can be a roller or other equipment. When the load is a roller, the drive shaft of the roller is connected to the hollow rotating shaft 2 by a key. The housing 1 is provided with a rotor assembly and a stator 4. The rotor assembly is fixedly connected to the rotating shaft 2, and the stator 4 is fixedly connected to the housing 1. Specifically, the housing 1 includes a stator base 11, an end cover 12, and an outer sealing ring cover 13. The end cover 12 is parallel to the vertical surface 111 of the stator base 11. The outer sealing ring cover 13 is located between the end cover 12 and the stator base 11, and the outer sealing ring cover 13 is fixed to both the end cover 12 and the stator base 11. The stator base 11 is connected to the hollow shaft 2 via bearings. The hollow shaft 2 can rotate relative to the stator base 11. The end cover 12 has a circular hole at its center. When the stator base 11 and the hollow shaft 2 are assembled, one end of the hollow shaft 2 passes through the circular hole of the end cover 12. Since the end cover 12 remains stationary when the hollow shaft 2 rotates, a gap is left between the end cover 12 and the hollow shaft 2 to avoid motion interference between them. The stator 4 is fixed on the stator base 11. The motor winding coil 61 is installed on the stator 4. The rotor assembly includes a rotor 31 fixed to the hollow shaft 2. The rotor 31 has a barrel-shaped structure, and the inner side of the barrel wall of the rotor 31 is used to install permanent magnets 62.

[0029] It should be noted that, please refer to Figure 5 and Figure 6 The stator base 11 is provided with a limiting ring 14. The limiting ring 14 cooperates with the stator 4 to limit the installation position of the stator 4 and ensure that the coaxiality of the stator 4 and the rotating shaft 2 meets the accuracy requirements. At the same time, the limiting ring 14 limits the installation position of the stator 4 and ensures the relative positional relationship between the stator 4 and the rotor 31.

[0030] It should be noted that, please refer to Figure 1 and Figure 3 When the motor is in use, in order to provide a point of force for the motor, a support structure 5 is provided on the housing 1. One end of the support structure 5 is fixed to the stator base 11, and the other end is connected to the load equipment, the ground or other fixed point. Specifically, the support structure 5 includes a motor bracket 51 and a connector 52. The connector 52 is fixed to the load equipment, the ground or other fixed point. One end of the motor bracket 51 is connected to the connector 52, and the other end of the motor bracket 51 is fixed to the stator base 11 to provide a point of force for the motor.

[0031] This utility model adopts the structure of hollow rotating shaft 2. During installation, hollow rotating shaft 2 can be directly connected to the drive shaft of the load to transmit power, reducing the size of the equipment and reducing space occupation.

[0032] Example 2

[0033] A rotating roller device includes a rotating roller and a hollow shaft external rotor motor as described in Embodiment 1. The drive shaft of the rotating roller is inserted into the hollow shaft 2 of the hollow shaft external rotor motor, and the drive shaft and the hollow shaft 2 are connected by a key. The rotating roller of this embodiment is suitable for the logistics field or other fields that require the conveying of workpieces. In the prior art, rotating rollers are often connected to motors through belt drives or reducers, resulting in a large overall size of the equipment and requiring a lot of space. By using the hollow shaft external rotor motor of this embodiment, the hollow shaft 2 can be directly connected to the drive shaft of the rotating roller during installation to transmit power, reducing the size of the equipment and the space occupied.

[0034] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hollow shaft external rotor motor, comprising a housing, wherein a rotor assembly and a stator are disposed within the housing, the stator being fixedly connected to the housing, characterized in that, It also includes a hollow shaft that serves as the output shaft of the motor, and the rotor assembly is fixedly connected to the hollow shaft.

2. A hollow shaft external rotor motor according to claim 1, characterized in that, The rotor assembly includes a rotor that is fixedly connected to the hollow shaft. The rotor has a barrel-shaped structure and permanent magnets are installed on the barrel wall.

3. A hollow shaft external rotor motor according to claim 2, characterized in that, The housing is provided with a stator base, and the stator is fixedly connected to the stator base. The stator base is also provided with a bearing for mounting the hollow rotating shaft.

4. A hollow shaft external rotor motor according to claim 3, characterized in that, The stator base is provided with a limiting ring, which cooperates with the stator and limits the installation position of the stator.

5. A hollow shaft external rotor motor according to claim 3, characterized in that, The housing also includes an end cover and an outer sealing ring cover; the end cover is parallel to the vertical surface of the stator base; the outer sealing ring cover is located between the end cover and the stator base, and the outer sealing ring cover is fixed to the end cover and the stator base respectively.

6. A hollow shaft external rotor motor according to claim 5, characterized in that, At least one of the stator base, the end cover, and the outer sealing ring cover is provided with a heat dissipation part.

7. A hollow shaft external rotor motor according to claim 1, characterized in that, The housing is provided with a support structure, one end of which is fixed to the stator base and the other end is connected to an external fixing point.

8. A hollow shaft external rotor motor according to claim 7, characterized in that, The support structure includes a motor bracket and a connector. The connector is fixed to an external fixing point. One end of the motor bracket is connected to the connector, and the other end of the motor bracket is fixed to the stator base.

9. A rotating roller device, characterized in that, It includes a rotating roller and a hollow shaft external rotor motor as described in any one of claims 1-8, wherein the drive shaft of the rotating roller is inserted into the hollow shaft of the hollow shaft external rotor motor, and the drive shaft is connected to the hollow shaft.

Images