Inner and outer rotor combined dual-motor and motor equipment

Abstract

The utility model discloses an inner and outer rotor combined dual motor and motor equipment, and relates to the technical field of motors, the inner and outer rotor combined dual motor comprises a casing, an inner stator and an outer stator are fixedly arranged in the casing, and an outer rotor is arranged around the outer side of the inner stator to form an outer rotor motor assembly; the inner stator and the outer stator are respectively arranged on two sides of the casing, the inner rotor is arranged in the outer stator to form an inner rotor motor assembly, the outer rotor is fixedly provided with a first rotating shaft, and the inner rotor is fixedly provided with a second rotating shaft. On the premise of one motor structure, the function of double-shaft output is achieved, the speed and direction of double-shaft output can be automatically controlled, and the motor is compact in structure, perfect in cooperation of all parts, reasonable in space arrangement and stable in output.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and in particular to a dual motor with an inner and outer rotor combined and a motor device. Background Art

[0002] With the rapid development of modern industry and urbanization, the output requirements for motors are becoming increasingly higher. The single output mode of motors in the existing market can no longer meet the needs of industrial manufacturing. The existing bidirectional output motors on the market only have the output shaft running through both sides of the motor, which cannot achieve single control of the output at both ends, let alone achieve different bidirectional output modes and speeds through the same motor. Utility Model Content

[0003] Purpose of the utility model: The technical problem to be solved by the utility model is to provide a dual motor and motor equipment with an inner and outer rotor combined, which solves the problem that the bidirectional output of the existing motor cannot be controlled separately.

[0004] Technical Solution

[0005] In order to solve the above problems, the technical solution provided by the present invention is as follows:

[0006] A dual motor with an inner and outer rotor includes a casing, an inner stator and an outer stator are fixedly provided in the casing, an outer rotor is provided around the outer side of the inner stator to form an outer rotor motor assembly; and an inner rotor is provided in the outer stator to form an inner rotor motor assembly.

[0007] Furthermore, the outer rotor is fixedly provided with a first rotating shaft, and the inner rotor is fixedly provided with a second rotating shaft.

[0008] Furthermore, the outer stator is provided inside the casing and is arranged in pairs with the inner rotor.

[0009] Furthermore, the inner stator fixing device is provided inside the casing, and the inner stator is fixedly connected to the inner stator fixing device via fasteners, and is arranged in pairs with the outer rotor.

[0010] Furthermore, a front end cover and a rear end cover are respectively provided on both sides of the casing, and the front end cover and the rear end cover are fixedly connected to the casing.

[0011] Furthermore, a first bearing and a second bearing are provided inside the inner stator fixing device.

[0012] Furthermore, a third bearing is provided in the front end cover, and a fourth bearing is provided in the rear end cover.

[0013] Furthermore, the first rotating shaft is fixed by the first and third bearings and passes through the front end cover to form a first transmission part, and the second rotating shaft is fixed by the second and fourth bearings and passes through the front end cover to form a second transmission part.

[0014] Also disclosed is a motor device comprising an external controller and the dual motors.

[0015] Furthermore, the external controller controls the inner rotor motor assembly or the outer rotor motor assembly to operate independently; or the inner rotor motor assembly and the outer rotor motor assembly to operate simultaneously.

[0016] Beneficial effects

[0017] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects:

[0018] The technical solution provided by the utility model realizes the function of dual-axis output under the premise of one motor structure by arranging the inner stator and outer rotor and the inner rotor and outer stator on both sides of the casing respectively, and the speed and direction of the dual-axis output can also be controlled automatically. In addition, the motor structure is compact, the various components are well coordinated, the space arrangement is reasonable, and the output is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is an axonometric exploded view of the present utility model;

[0021] Figure 3 This is an axonometric exploded view from another perspective of the present invention. DETAILED DESCRIPTION

[0022] In order to make the technical solution of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Example 1

[0024] Combined with attachment Figure 1-3 A dual motor with an inner and outer rotor, the main structure of which is composed of a first rotating shaft 4, an inner stator 8, an outer rotor 9, a second rotating shaft 5, an inner rotor 6, an outer stator 7, a casing 1, a front end cover 2, a rear end cover 3, a first bearing 13, a second bearing 12, a third bearing 11, and a fourth bearing 10.

[0025] The casing 1 consists of two annular shells, which can be fixed together as an integral structure. An inner stator fixing device 11 is provided inside the two annular shells. The inner stator fixing device 11 is a cylindrical shell or a plastic-coated part. A first bearing 13 and a second bearing 12 are fixedly installed on both sides of the inner stator fixing device 11.

[0026] The second bearing 12 of the inner stator fixing device 11 is used to rotatably mount the first rotating shaft 4 . The end of the first rotating shaft 4 is disposed in the second bearing 12 and mounted on one side of the inner space of the inner stator fixing device 11 .

[0027] The space inside the annular housing on the outside of one side of the inner stator fixing device 11 is used to install the inner stator 8. The inner stator 8 is fixedly connected to the inner stator fixing device 11 by fasteners. The fasteners are preferably bolt connectors. The inner stator 8 is fixed to the inner stator fixing device 11 by the bolt connectors. The lines that need to be connected to the inner stator 8 are directly connected to the casing 1.

[0028] The outer stator 7 is installed in the annular wall on the other side of the inner stator fixing device 11 in the casing 1. The first bearing 13 in the inner stator fixing device 11 is used to rotatably install the second rotating shaft 5. The end of the second rotating shaft 5 extends into the inner stator fixing device 11 and is installed on the other side of the internal space of the inner stator fixing device 11 through the first bearing 13.

[0029] Since the outer stator 7 is directly mounted or molded into the annular wall on the other side of the inner stator device 11 , the circuit of the outer stator 7 can be directly connected to the housing 1 .

[0030] Thus, the housing 1 can be directly connected to a circuit to provide power to the coils on the inner stator 8 and the outer stator 7 .

[0031] A limiting snap ring can be optionally provided in the inner stator fixing device 11, and the first rotating shaft 4 and the second rotating shaft 5 are respectively provided on both sides of the limiting snap ring in the inner stator fixing device 11. The limiting snap ring can assist in the installation of the first rotating shaft 4 and the second rotating shaft 5. The limiting snap ring can also limit the position of the first rotating shaft 4 and the second rotating shaft 5, so that they remain stable under long-term operation.

[0032] The front end cover 2 and the rear end cover 3 are fixedly connected to both sides of the casing 1. The front end cover 2 and the rear end cover 3 cover both sides of the two annular shells of the casing 1, and the front end cover 2 and the rear end cover 3 correspond to the structural shapes of the two annular shells respectively.

[0033] A third bearing 11 is provided in the front end cover 2 , and a fourth bearing 10 is provided in the rear end cover 3 . The third bearing 11 and the first bearing 13 jointly fix the second rotating shaft 5 , and the second bearing 12 and the fourth bearing 10 jointly fix the first rotating shaft 4 .

[0034] The fourth bearing 10 in the rear end cover 3 is rotatably matched with the first rotating shaft 4, and the third bearing 11 in the front end cover 2 is rotatably matched with the second rotating shaft 5. The front end cover 2 and the rear end cover 3 are provided with bearing mounting holes for installing the third bearing 11 and the fourth bearing 10 respectively. The first rotating shaft 4 and the second rotating shaft 5 are fixed in the bearing mounting holes of the front end cover 2 and the rear end cover 3 respectively through the third bearing 11 and the fourth bearing 10, and the first rotating shaft 4 and the second rotating shaft 5 are fixed in the bearing mounting holes through the third bearing 11 and the fourth bearing 10.

[0035] The front end cover 2 and the rear end cover 3 are preferably fixedly connected to the casing 1 with bolts. The front end cover 2 and the rear end cover 3 are connected to the casing 1 to form a stable structure to ensure the stable operation of the inner rotor 6 and the outer rotor 9, while providing good protection to prevent foreign matter and water vapor from entering the interior of the motor.

[0036] At this time, one end of the first rotating shaft 4 is mounted in the inner stator fixing device 11 via the fourth bearing 10, and the other end passes through the second bearing 12 of the rear end cover 3. A bearing is also used at the position where the first rotating shaft 4 passes through the mounting hole of the rear end cover 3 to fix the first rotating shaft 4 to the bearing mounting hole of the rear end cover 3.

[0037] At this time, one end of the second rotating shaft 5 is installed in the inner stator fixing device 11 through the first bearing 13, and the other end passes through the third bearing 11 of the front end cover 2. The second rotating shaft 5 passes through the mounting hole of the front end cover 2 and is fixed to the bearing mounting hole of the front end cover 2 using a bearing.

[0038] The inner rotor 6 is fixed on the second rotating shaft 5. The fixed position of the inner rotor 6 corresponds to the outer stator 7. The inner rotor runs in the outer stator 7 through the bearings fixed in the front end cover 2 and the inner stator fixing device 11. The inner rotor 6 and the outer stator 7 are arranged in pairs and cooperate with each other to realize the driving function.

[0039] The outer rotor 9 rotates around the inner stator 8 through bearings fixed in the rear end cover 3 and the inner stator fixing device 11. The outer rotor 9 and the inner stator 8 are arranged in pairs and cooperate with each other to realize the driving function.

[0040] The inner stator 8, outer rotor 9 and first bearing 4 on one side of the casing 1 constitute an outer rotor motor assembly; the inner rotor 6, outer stator 7 and second bearing 5 on the other side of the casing 1 constitute an inner rotor motor assembly. Since the circuits of the inner stator 8 and the outer stator 7 are both connected to the casing 1, and the casing 1 is electrically connected to an external control device, the inner rotor motor assembly and the outer rotor motor assembly are controlled separately to achieve functions of different speeds and different directions.

[0041] The first rotating shaft 4 and the second rotating shaft 5 extend out of the rear end cover 3 and the front end cover 2 , and can be installed with matching connecting devices, such as gears, pulleys, etc., for convenient direct use.

[0042] Example 2

[0043] A motor device includes a dual motor with a combined inner and outer rotor as disclosed in Example 1, and an external controller for controlling the dual motor with a combined inner and outer rotor. The external controller can separately control the outer rotor motor assembly and the inner rotor motor assembly of the dual motor with a combined inner and outer rotor. Switches and parameter controllers are respectively provided in the external controller. The switches and parameter controllers correspond one-to-one with the outer rotor motor assembly and the inner rotor motor assembly, respectively. That is, the outer rotor motor assembly corresponds to a group of switches and parameter controllers, and the inner rotor motor assembly corresponds to a group of switches and parameter controllers, thereby realizing the separate driving function or simultaneous driving function of the outer rotor motor assembly and the inner rotor motor assembly in the switches and parameter controllers.

[0044] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A dual motor with an inner and outer rotor, characterized in that: The motor comprises a casing, wherein an inner stator and an outer stator are fixedly provided in the casing, an outer rotor is provided around the outer side of the inner stator to form an outer rotor motor assembly; an inner rotor is provided in the outer stator to form an inner rotor motor assembly.

2. The dual motor with inner and outer rotors according to claim 1, characterized in that: The outer rotor is fixed with a first rotating shaft, and the inner rotor is fixed with a second rotating shaft.

3. The dual motor with inner and outer rotors according to claim 1, characterized in that: The outer stator is located inside the casing and is arranged in pairs with the inner rotor.

4. The dual motor with inner and outer rotors according to claim 2, characterized in that: The inner stator fixing device is provided inside the casing. The inner stator is fixedly connected to the inner stator fixing device via a fastener and is arranged in pairs with the outer rotor.

5. The dual motor with inner and outer rotors according to claim 2, characterized in that: A front end cover and a rear end cover are respectively provided on both sides of the casing, and the front end cover and the rear end cover are fixedly connected to the casing.

6. The dual motor with inner and outer rotors according to claim 4, characterized in that: A first bearing and a second bearing are provided inside the inner stator fixing device.

7. The dual motor with inner and outer rotors according to claim 5, characterized in that: A third bearing is provided in the front end cover, and a fourth bearing is provided in the rear end cover.

8. The dual motor with inner and outer rotors according to claim 7, characterized in that: The first rotating shaft is fixed by the first and third bearings and passes through the front end cover to form a first transmission part. The second rotating shaft is fixed by the second and fourth bearings and passes through the rear end cover to form a second transmission part.

9. A motor device, characterized in that: The invention comprises an external controller and a dual motor as claimed in any one of claims 1 to 8.

10. The motor device according to claim 9, characterized in that: The external controller controls the inner rotor motor assembly or the outer rotor motor assembly to operate independently; or the inner rotor motor assembly and the outer rotor motor assembly to operate simultaneously.

Images