CN110556994A

CN110556994A - Electric machine

Info

Publication number: CN110556994A
Application number: CN201910869235.7A
Authority: CN
Inventors: 张平; 周慧珠; 孙兴林; 孙叶琳; 骆兰英
Original assignee: Continuing Business City (shenzhen) Co Ltd
Current assignee: Continuing Business City (shenzhen) Co Ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2019-12-10

Abstract

The invention relates to the technical field of power driving equipment, in particular to a motor. The power module of the motor does not comprise a rotating shaft for power transmission, overcomes the defect that the traditional motor can only transmit power to the outside through the rotating shaft, can be directly connected with the execution element or connected with the execution element through other adapter pieces, and drives the execution element to move, optimizes the structure of the motor, enriches the power transmission mode of the motor, and expands the application range of the motor.

Description

Electric machine

Technical Field

The invention relates to the technical field of power driving equipment, in particular to a motor.

Background

the motor is used as a power device mainly generating driving torque, converts electric energy into mechanical energy, is a power source of electric appliances and various machines, and can select motors with different corresponding functions according to different use occasions so as to meet the operation requirements of various processing equipment.

Along with the continuous development of industrial automation, the application of the motor is increasingly wide, the traditional motor generally drives the rotor to rotate, the magnetic force line passes through the isolation sleeve, the rotor drives the rotating shaft arranged in the motor to rotate under the action of a magnetic field, the power is output from the rotating shaft to the outside, the power transmission form of the motor is limited, and the working power and the application range of the motor are limited.

disclosure of Invention

the invention aims to provide a motor to overcome the defect of single power transmission form and application range of the motor.

The technical scheme adopted by the invention for solving the technical problems is as follows:

an electric machine includes a power module that does not include a rotating shaft for power transfer.

In a preferred embodiment, the power module consists of a stator and a rotor in the form of a closed loop.

In a preferred embodiment, the power module comprises a stator and a rotor in the shape of a closed loop as the power connection end.

In a preferred embodiment, the power module includes a stator and a rotor in a closed loop type, the rotor is sleeved outside the stator, and the stator is hollow inside.

In a preferred embodiment, the power module includes a stator and a rotor in a closed loop type, the rotor is embedded in the rotor, and the rotor is hollow inside.

In a preferred embodiment, the stator further comprises a support portion, and the stator and the rotor are both connected to the support portion.

In a preferred embodiment, the support portion is provided in plurality and distributed along a circumferential direction of the rotor.

in a preferred embodiment, the number of the supporting parts is not less than two, and the supporting parts are distributed in parallel along the axial direction of the rotor.

In a preferred embodiment, the support portion includes a first connecting unit and a second connecting unit that are rotatably connected, the first connecting unit being connected to the rotor, and the second connecting unit being connected to the stator.

In a preferred embodiment, a plurality of rolling bodies are further provided between the first connecting unit and the second connecting unit, and the rolling bodies can roll along with the relative rotation between the first connecting unit and the second connecting unit.

In a preferred embodiment, the support portion includes a first connecting unit, a second connecting unit and a third connecting unit, the first connecting unit is connected to the rotor, the second connecting unit is connected to the stator, and the third connecting unit passes through the space between the first connecting unit and the second connecting unit and is fixed relative to the stator.

In a preferred embodiment, the stator is of a closed-loop type.

In a preferred embodiment, the stator includes not less than two magnetic force units arranged in a circumferential direction of the rotor.

In a preferred embodiment, the stator and the rotor are both connected to the support portion, the stator is connected to the support portion and the stator, and the interior of the stator is hollow.

In a preferred embodiment, the rotor further comprises a fixing seat and a supporting portion, the magnetic unit and the rotor are both connected with the supporting portion, the fixing seat is connected with the supporting portion and the magnetic unit, the fixing seat is hollow, the fixing seat comprises a fixing area and an installation area, the fixing area and the installation area are arranged at intervals, the magnetic unit is installed in the installation area, and the supporting portion is installed in the fixing area.

In a preferred embodiment, a plurality of winding groups are arranged along the circumferential direction of the stator, and the rotor is provided with a magnetic ring at one side close to the winding groups.

In a preferred embodiment, each of the stators includes a mounting base, and the winding groups are connected to the mounting base and arranged in a circumferential direction of the stator.

In a preferred embodiment, the winding group includes a winding post and a coil wound on the winding post.

The invention has at least the following beneficial effects:

The motor comprises the power module, the power module does not comprise a rotating shaft for power transmission, the defect that the traditional motor can only transmit power to the outside through the rotating shaft is overcome, the power module can be directly connected with the execution element or connected with the execution element through other adapters and drives the execution element to move, the structure of the motor is optimized, the power transmission mode of the motor is enriched, and the application range of the motor is expanded.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural view of a first embodiment of an electric machine;

FIG. 2 is a schematic cross-sectional view of a support portion in a first embodiment of the motor;

FIG. 3 is a schematic structural diagram of a second embodiment of the motor;

FIG. 4 is a schematic cross-sectional view taken at A-A in FIG. 3;

FIG. 5 is a schematic cross-sectional view taken at B-B of FIG. 3;

FIG. 6 is a schematic structural diagram of a third embodiment of the motor;

Fig. 7 is a schematic structural view of a magnetic force unit in the third embodiment;

FIG. 8 is a schematic structural view of a support part in the third embodiment;

FIG. 9 is a schematic structural view of a fourth embodiment of the motor;

Fig. 10 is a schematic structural view of a magnetic force unit in the fourth embodiment;

FIG. 11 is a schematic structural view of a support part in the fourth embodiment;

FIG. 12 is a schematic view of the motor in a first use state;

FIG. 13 is a schematic structural view of a second state of use of the motor;

Fig. 14 is a schematic structural view of a third use state of the motor.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, all the connection/connection relations referred to in the patent do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection auxiliary components according to specific implementation conditions. The technical characteristics of the invention can be combined interactively on the premise of not conflicting with each other.

First embodiment

referring to fig. 1 and 2, the motor in this embodiment includes a stator 10 and a rotor 20, where the stator 10 and the rotor 20 are both in a closed loop shape, such that the stator 10 and the rotor 20 are hollow inside, the rotor 20 is disposed around the stator 10, a plurality of winding groups 11 are arranged along a circumferential direction of the stator 10, and the rotor 20 is provided with a magnetic ring 21 at a side close to the stator 10, that is, the magnetic ring 21 is disposed at an inner ring of the rotor 20.

The magnetic ring 21 in this embodiment may be a permanent magnet, and the winding set 11 on the stator 10 generates a magnetic field after being energized, and the magnetic field interacts with the magnetic field generated by the magnetic ring 21 to push the rotor 20 to rotate, thereby realizing the rotation performance of the rotor 20.

The stator 10 and the rotor 20 in the embodiment both adopt an annular structure, the interior of the stator 10 is hollow, and the rotor 20 is used as a power connecting end of the motor and is connected with an external execution element, so that the structure of the motor is simplified, and the motor is lighter; the power transmission of the motor to an external device can be realized by connecting corresponding actuating elements on the rotor 20, the transmission efficiency and power of the motor are high, and the form of an outer rotor and an inner stator is adopted, so that the rotational inertia and the heat dissipation performance of the motor are improved, and the operation of the motor is stable.

In the present embodiment, a support portion 30 is provided between the stator 10 and the rotor 20, and the support portion 30 is used to connect the stator 10 and the rotor 20. The supporting portion 30 includes a first connecting unit 31 and a second connecting unit 32 rotatably connected to each other, the first connecting unit 31 and the second connecting unit 32 are both of a closed ring structure, the first connecting unit 31 is sleeved outside the second connecting unit 32, the first connecting unit 31 and the rotor 20 are relatively fixed, and the second connecting unit 32 and the stator 10 are relatively fixed. When the rotor 20 rotates relative to the stator 10, the first connection unit 31 rotates following the rotor 20, and relative rotation between the first connection unit 31 and the second connection unit 32 is achieved. In this embodiment, the outer wall of the first connection unit 31 is attached to the inner wall of the rotor 20, the outer wall of the second connection unit 32 is connected to the stator 10, and the rotor 20 and the stator 10 can maintain relative rotation by providing a rotational connection form between the first connection unit 31 and the second connection unit 32.

a plurality of rolling bodies 33 are arranged between the first connecting unit 31 and the second connecting unit 32, and the rolling bodies 33 can roll along with the relative rotation between the first connecting unit 31 and the second connecting unit 32, so that rolling friction is formed between the first connecting unit 31 and the second connecting unit 32, and the power transmission efficiency between the first connecting unit 31 and the second connecting unit 32 and the power driving efficiency of the motor are improved.

The stator 10 is arranged on the fixing seat 40 and fixedly connected with the fixing seat 40, and in the embodiment, the stator 10 and the fixing seat 40 are relatively fixed by inserting a locking piece into the stator 10 and the fixing seat 40; the second connection unit 32 is tightly fitted with the stator 10, so that the second connection unit 32 and the fixing seat 40 are relatively fixed in the rotation process of the rotor 20. The fixing base 40 in this embodiment is also in a closed ring structure, so that the interior of the motor is hollow, thereby ensuring the weight reduction of the motor and having higher working efficiency.

Preferably, the stator 10 in the present embodiment may be disposed outside the supporting portion 30, and the rotor 20 may be disposed inside the supporting portion 30. The executing component is connected with the inner side of the rotor 20 by adopting a mode of an outer stator and an inner rotor, and the driving of the executing component by the rotor 20 can also be realized.

Second embodiment

Referring to fig. 3 to 5, the present embodiment is different from the first embodiment in that a plurality of supporting portions 30 are arranged in the circumferential direction of the rotor 20, and the specification and size of the supporting portions 30 are reduced, thereby reducing the processing difficulty and processing cost of the supporting portions 30. The supporting portion 30 also includes a first connecting unit 31 and a second connecting unit 32, the first connecting unit 31 is fixed to the rotor 20, and the second connecting unit 32 is fixed to the fixing base 40. The supporting part 30 is in point contact with the fixed seat 40 and the rotor 20, and by arranging the plurality of supporting parts 30, a multi-point supporting effect between the supporting part 30 and the fixed seat 40 and between the supporting part 30 and the rotor 20 is achieved, and on the premise that the rotor 20 and the stator 10 are supported, the rotor 20 rotates relative to the stator 10.

The two support portions 30 in this embodiment are arranged in parallel based on the axial direction of the stator 10 to improve the smoothness of the rotation process of the rotor 20 and prevent the rotor 20 from rolling. The support portion 30 further includes a third connecting unit 34, and the third connecting unit 34 sequentially passes through the support portion 30, the stator 10 and the other support portion 30 from between the first connecting unit 31 and the second connecting unit 32 and is locked, so as to realize relative fixation between the stator 10 and the second connecting unit 32.

The number of the supporting portions 30 in this embodiment may also be one based on the axial direction of the rotor 20, so that the structure of the supporting portions 30 is simplified on the premise that the supporting portions 30 support the stator 10 and the rotor 20 in a connected manner.

fixing base 40 all is closed ring-type with stator 10, and stator 10's inside cavity, stator 10 are including installation base member 12, and installation base member 12 is the annular and installs in fixing base 40's terminal surface, and the outside salient of edge of installation base member 12 has a plurality of installation positions to supply supporting portion 30 to install, this installation position is inserted and is located between the adjacent wire winding group 11, satisfies supporting portion 30's multiple spot support demand.

In the present embodiment, three supporting portions 30 are provided, three supporting positions are formed by the three supporting portions 30, and a supporting plane is formed by the three supporting positions, so that the supporting portions 30 maintain stable support for the fixing base 40 and the rotor 20. Preferably, the supporting portions 30 are uniformly distributed along the circumferential direction of the rotor 20, so as to ensure the smoothness of the rotation of the rotor 20 relative to the stator 10.

The rotor 20 in this embodiment may be located inside the stator 10, the rotor 20 may be supported by the support portion 30 as in the stator 10, the rotor 20 may be in a closed ring shape, the rotor 20 may have a hollow interior, and the rotor 20 may be used as a power connection end to drive an actuator connected to the inside of the rotor 20.

Third embodiment

referring to fig. 6 to 8, the present embodiment is different from the second embodiment in that the stator 10 in the present embodiment includes not less than two magnetic force units 100, and the magnetic force units 100 are arranged in the circumferential direction of the stator. Because the stator 10 is generally formed by stacking silicon steel sheets, the magnetic unit 100 is combined to form the structure of the stator 10, so that the stator 10 can be processed based on the silicon steel sheets with small specifications, the generation of waste materials is reduced, and the production cost is reduced. In the embodiment, three magnetic units 100 are provided, and the magnetic units 100 are uniformly distributed along the circumferential direction of the rotor 20, the size of each magnetic unit 100, the number of the magnetic units 100, and the number of the winding groups 11 included in each magnetic unit 100 can be reasonably selected according to actual use requirements, and the number of the winding groups 11 on different magnetic units 100 can be set to be equal or different.

The adjacent winding groups 11 are arranged at intervals, and a part of the fixing seat 40 is accommodated between the adjacent winding groups 11. Specifically, the fixing base 40 includes a fixing area 41 and a mounting area 42, the fixing area 41 and the mounting area 42 are arranged at an interval, the magnetic unit 100 is mounted on the mounting area 42, the supporting portion 30 is mounted on the fixing area 41, the fixing area 41 is protruded to provide a mounting surface for the supporting portion 30, and the mounting area 42 is recessed to provide an accommodating space for the winding set 11. The magnetic units 100 are distributed along the circumferential direction of the rotor 20 by splicing the magnetic units 100 on the fixing base 40, and the sizes and the numbers of the fixing areas 41 and the mounting areas 42 can be selected according to the specific specifications of the magnetic units 100 and the rotor 20 and the use requirements of the motor.

The mounting base 12 of the magnetic unit 100 is mounted on the mounting area 42 of the fixing base 40, the supporting portion 30 is mounted on the fixing area 41 of the fixing base 40, the winding group 11 includes a winding post 111 and a coil 112 wound on the winding post, and the winding post 111 is integrally connected with the mounting base 12; the installation base 12 is fan-shaped, and the installation base 12 is fixed on the fixed seat 40 through a threaded fastener.

in the present embodiment, two parallel supporting portions 30 may be disposed at the installation position of each supporting portion 30, the two supporting portions 30 simultaneously support the rotor 20 and the fixing seat 40, and the fixing seat 40 is located at the central point between the two supporting portions 30.

the third connecting unit 34 sequentially passes through the supporting portion 30, the fixing base 40 and the other supporting portion 30 from the first connecting unit 31 to the second connecting unit 32 and is locked, so that the stator 10 and the second connecting unit 32 are relatively fixed.

The rotor 10 in the embodiment is used as a power connecting end to be connected with an external execution element, so that the power output of the motor is realized; the fixing base 40 is annular and hollow, and is not connected to other elements, and the magnetic unit 100 forms the complete stator 10 by splicing on the fixing base 40.

Fourth embodiment

Referring to fig. 9 to 11, the stator 10 in the present embodiment includes three magnetic units 100, and unlike the third embodiment, the magnetic unit 100 in the present embodiment is enclosed outside the rotor 20, the rotor 20 is in a closed loop shape, the interior of the rotor 20 is hollow, and the rotor 20 is connected to an actuator as a power connection end, so as to implement power transmission of the motor. The magnetic ring 21 is disposed on the outer wall of the rotor 20, the mounting base 12 is located at the outer edge of the magnetic unit 100, and the winding group 11 is disposed on the inner wall of the mounting base 12. After the magnetic unit 100 is powered on, the rotor 20 can rotate inside the rotor 20 under the action of the magnetic force, and the power driving from the motor to other elements can be realized by connecting the transmission element at the inner wall of the rotor 20. The rotor 20 in this embodiment is also in a closed loop shape, and the rotor 20 is hollow inside, so that the motor is more lightweight on the premise that the rotor 20 transmits power to the structure installed inside.

When the support 30 is mounted, the positions of the first connection unit 31 and the second connection unit 32 in the support 30 need to be changed, that is, the first connection unit 31 is located inside and fixed relative to the rotor 20, the second connection unit 32 is located inside and fixed relative to the stator 10, and the third connection unit 34 sequentially passes through the support 30, the fixed seat 40 and the other support 30 from between the first connection unit 31 and the second connection unit 32 and is locked, so that the fixed connection between the magnetic unit 100 and the support seat 30 and the relative rotation between the rotor 20 and the magnetic unit 100 are realized.

Referring to fig. 12, taking the motor shown in fig. 11 in fig. 9 as an example, an actuator 200 is disposed inside the rotor 20, and in this embodiment, the actuator is taken as a fan as an example, and the actuator may be disposed as another device according to the usage requirement of the motor. The execution element 200 is embedded in the rotor 20, and the rotor 20 is fixedly connected with the execution element 200 as a power connection end, so that the execution element 200 is driven to move when the rotor 20 rotates, the execution element 200 rotates to realize air outlet of the fan, and the power transmission effect of the motor is achieved.

The motor in this embodiment does not output power to the actuator 200 through a rotating shaft, but directly connects the actuator 200 with the rotor 20, and the rotation of the rotor 20 is directly transmitted to the actuator 200, so that the power transmission efficiency of the motor is high.

Referring to fig. 13, also taking the motor shown in fig. 9 to 11 as an example, an adapter unit 300 is provided between the rotor 20 and the actuator 200, the outer side of the adapter unit 300 is fixedly connected to the rotor 20, and the inner side of the adapter unit 300 is fixedly connected to the actuator 200, so as to fixedly connect the actuator 200 and the rotor 20. The rotor 20 serves as a power connection end and transmits power to the actuator 200 through the adaptor unit 300, and when the rotor 200 rotates, the actuator 200 moves along with the rotor 20, so that the power transmission effect of the motor is achieved.

Referring to fig. 14, taking the motor shown in fig. 3 to 4 as an example, the rotor 20 is sleeved outside the stator 10, the actuator 200 is disposed outside the rotor 20, the rotor 20 is fixedly connected to the actuator 200 as a power connection end, and the rotor 20 drives the actuator 200 to move when rotating, so as to realize power transmission from the rotor 20 to the actuator 200, thereby achieving the power transmission effect of the motor.

Furthermore, the particular features, structural functions or characteristics of the present invention may be combined in any suitable manner in one or more embodiments. For example, the first, second, and fourth embodiments may be combined as long as the particular features, structures, functions, or characteristics associated with the three embodiments are not mutually exclusive.

The motor further comprises a shell, the stator 10, the rotor 20 and the supporting portion 30 are contained in the shell, and the shell protects the stator 10, the rotor 20 and the supporting portion 30 inside the shell, so that the running safety performance of the motor is improved.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. An electric machine comprising a power module, the power module not comprising a shaft for power transmission.

2. The electric machine of claim 1, wherein the power module is comprised of a stator and a closed-loop rotor.

3. The electric machine of claim 1, wherein the power module comprises a stator and a rotor in the form of a closed loop as a power connection end.

4. the electric machine of claim 1, wherein the power module comprises a stator and a rotor in a closed loop type, the rotor is sleeved outside the stator, and the stator is hollow inside.

5. The electric machine of claim 1, wherein the power module comprises a stator and a rotor in a closed loop type, the rotor is embedded inside the rotor, and the inside of the rotor is hollow.

6. The electric machine of any of claims 2 to 5, further comprising a support portion to which both the stator and the rotor are connected.

7. The electric machine of claim 6, wherein the support portion is provided in plurality and distributed along a circumferential direction of the rotor.

8. The motor of claim 6, wherein the number of the support portions is not less than two and is distributed in parallel along the axial direction of the rotor.

9. The motor according to claim 7 or 8, wherein the support portion includes a first connection unit and a second connection unit rotatably connected, the first connection unit being connected with the rotor, and the second connection unit being connected with the stator.

10. The motor of claim 9, wherein a plurality of rolling bodies are disposed between the first connection unit and the second connection unit, and the rolling bodies can roll along with the relative rotation between the first connection unit and the second connection unit.

11. The motor of claim 8, wherein the support portion comprises a first connecting unit, a second connecting unit and a third connecting unit which are rotatably connected, the first connecting unit is connected with the rotor, the second connecting unit is connected with the stator, and the third connecting unit passes through the first connecting unit and the second connecting unit and is fixed relative to the stator.

12. A machine as claimed in any of claims 2 to 5, wherein the stator is of the closed loop type.

13. The electric machine according to any one of claims 2 to 5, wherein the stator comprises not less than two magnetic force units arranged in a circumferential direction of the rotor.

14. The motor of claim 12, further comprising a fixing base and a supporting portion, wherein the stator and the rotor are both connected to the supporting portion, the fixing base is connected to the supporting portion and the stator, and the fixing base is hollow.

15. The motor of claim 13, further comprising a fixing base and a supporting portion, wherein the magnetic unit and the rotor are both connected to the supporting portion, the fixing base is connected to the supporting portion and the magnetic unit, the fixing base is hollow, the fixing base comprises a fixing area and a mounting area, the fixing area and the mounting area are arranged at intervals, the magnetic unit is mounted to the mounting area, and the supporting portion is mounted to the fixing area.

16. An electric machine as claimed in any of claims 2 to 5, wherein a plurality of winding groups are arranged circumferentially of the stator, and the rotor is provided with a magnetic ring on a side adjacent to the winding groups.

17. The electric machine of claim 16 wherein each of said stators includes a mounting base, said winding groups being connected to said mounting base and arranged circumferentially of said stator.

18. The motor of claim 17, wherein the winding group comprises a winding post and a coil wound on the winding post.