A magnetic drive device suitable for a motor and a motor

Abstract

The utility model belongs to motor technical field discloses a kind of magnetic drive device and motor suitable for motor.The drive device, fixed shaft is vertically fixed on support, armature ring is located on the outer circumferential wall of support, and driven part is fixed on support, and located at the side of fixed shaft;End cover movably sets on fixed shaft, including outside and inside, outside is covered and extended to the armature above along the outside wall of support in the direction of armature, and inside is vertically extended to the driven part from the outside portion;The rotor is fixed with the spare end of outside portion, and is oppositely arranged with the armature;The first magnetic steel is attached to the inner side wall of rotor and oppositely arranged with the armature;The second magnetic steel is annularly attached to the outside wall of driven part, and the third magnetic steel is annularly attached to the side of inside portion close to driven part.The utility model can meet the miniaturization and light weight demand of motor.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a magnetic drive device and motor suitable for use with motors. Background Technology

[0002] An electric motor is a device that converts electrical energy into mechanical energy based on electromagnetic induction. As a power source, it is a core component of various mechanical equipment. Based on structure, it can be classified into asynchronous motors, synchronous motors, or DC motors; based on the shape of its windings, it can be classified into flat wire motors and round wire motors.

[0003] For any type of motor, additional functional components are required to achieve the corresponding functions. Generally, these independently configured functional components also require separate drive units to perform their specific functions. For example, for an oil-cooled motor, an oil pump is needed to pump cooling and lubricating oil into the pump, thereby achieving cooling and lubrication. In this case, an additional drive source (such as a motor) coaxially mounted with the oil pump is required to drive the oil pump.

[0004] Furthermore, using an independent external drive source to power each functional component within the motor increases its overall size and weight. This limits the miniaturization and weight reduction of the motor itself, thereby hindering the development of corresponding mechanical equipment such as drones that require miniaturization and weight reduction. Utility Model Content

[0005] The purpose of this invention is to provide a magnetic drive device and motor suitable for electric motors, so as to solve the technical problems existing in the miniaturization and lightweighting of existing motors.

[0006] To achieve the above objectives, the present invention proposes the following technical solution:

[0007] In the first aspect, this technical solution provides a magnetic drive device suitable for electric motors, including: a bracket that cooperates with each other, a component to be driven, a fixed shaft, an armature, an end cover, a rotor, a first magnet, a second magnet, and a third magnet;

[0008] The fixed shaft is vertically fixed to the bracket, the armature is circumferentially disposed on the outer peripheral wall of the bracket, and the driveable component is fixed to the bracket and located around the fixed shaft. The end cap is movably sleeved on the fixed shaft and includes an outer portion and an inner portion. The outer portion extends along the outer peripheral wall of the bracket towards the armature and covers the armature above it. The inner portion extends circumferentially and vertically from the outer portion to the driveable component. The rotor is fixed to the empty end of the outer portion and is spaced apart from the armature. The first magnet is attached to the inner peripheral wall of the rotor and spaced apart from the armature. The second magnet is circumferentially attached to the outer peripheral wall of the driveable component, and the third magnet is circumferentially attached to the inner portion near the driveable component.

[0009] Furthermore, grooves are provided on the outer peripheral wall and the inner side of the component to be driven; the second magnet and the third magnet are embedded in the corresponding grooves.

[0010] Furthermore, the groove is a rectangular groove, a U-shaped groove, or a dovetail groove.

[0011] Furthermore, the distance between the second magnet and the third magnet ranges from 0.2 mm to 3 mm.

[0012] Furthermore, the second magnet and the third magnet have the same height dimension, and the second magnet and the third magnet are deployed at the same height.

[0013] Furthermore, the component to be driven is an oil-cooled oil pump.

[0014] Furthermore, the end cap is fixed to the rotor by a fastener or a heat-shrink fitting.

[0015] Secondly, this technical solution provides an electric motor, including the aforementioned magnetic drive device suitable for electric motors.

[0016] Furthermore, it is an oil-cooled motor, and the magnetic drive device is used to drive the oil-cooled oil pump.

[0017] Furthermore, it is a flat wire motor.

[0018] Beneficial effects:

[0019] This technical solution provides a novel driving device for local functional components to solve the technical problem in the prior art that it is difficult to achieve miniaturization and lightweight design of motors because a separate driving source is required for each local functional component.

[0020] The driving device includes a bracket, a component to be driven, a fixed shaft, an armature, an end cap, a rotor, a first magnet, a second magnet, and a third magnet that cooperate with each other. The fixed shaft is vertically fixed to the bracket, the armature is circumferentially disposed on the outer peripheral wall of the bracket, and the component to be driven is fixed to the bracket and located around the fixed shaft. The end cap is movably sleeved on the fixed shaft and includes an outer portion and an inner portion. The outer portion extends along the outer peripheral wall of the bracket towards the armature and covers the armature, while the inner portion extends circumferentially and vertically from the outer portion to the component to be driven. The rotor is fixed to the empty end of the outer portion and is spaced apart from the armature. The first magnet is attached to the inner peripheral wall of the rotor and spaced apart from the armature. The second magnet is circumferentially attached to the outer peripheral wall of the component to be driven, and the third magnet is circumferentially attached to the inner portion near the component to be driven. After the armature is powered on, the rotor rotates to achieve the basic function of the motor. At this time, during the rotation of the rotor, the third magnet will be driven to rotate through the end cover. At this time, the moving part is driven by the attraction and repulsion between the third magnet and the second magnet, thus replacing the traditional independent additional drive source.

[0021] It should be understood that all combinations of the foregoing concepts and the additional concepts described in more detail below can be considered as part of the utility model subject matter of this disclosure, provided that such concepts do not contradict each other.

[0022] The foregoing and other aspects, embodiments, and features of the present invention will be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the present invention, such as features and / or beneficial effects of exemplary embodiments, will become apparent from the following description or may be learned through practice of specific embodiments according to the teachings of the present invention. Attached Figure Description

[0023] The accompanying drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component shown in the various figures may be denoted by the same reference numeral. For clarity, not every component is labeled in each figure. Embodiments of various aspects of the present invention will now be described by way of example and with reference to the accompanying drawings, wherein:

[0024] Figure 1 This is a schematic diagram of the structure of the magnetic drive device for electric motors described in this embodiment.

[0025] The reference numerals in the figure are as follows: 1 is the bracket, 2 is the component to be driven, 3 is the fixed shaft, 4 is the armature, 5 is the end cover, 6 is the rotor, 7 is the first magnet, 8 is the second magnet, 9 is the third magnet; 51 is the outer side, and 52 is the inner side. Detailed Implementation

[0026] 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, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art to which this utility model pertains.

[0027] The terms "first," "second," and similar words used in this utility model patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular forms of "an," "a," or "the," etc., do not indicate a quantity limitation, but rather indicate the presence of at least one. Terms such as "comprising" or "including" indicate that the element or object preceding "comprising" encompasses the features, integrals, steps, operations, elements, and / or components listed following "comprising" or "including," and do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or collections thereof. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0028] An electric motor is a device that converts electrical energy into mechanical energy based on electromagnetic induction. To achieve its functions, it requires other functional components. Generally, each of these independently configured functional components needs its own dedicated drive unit to perform its specific function. However, using a separate external drive source to drive each functional component within the motor increases its overall size and weight. This limits the miniaturization and weight reduction of the motor itself, thus hindering the development of corresponding mechanical devices such as drones that require miniaturization and weight reduction. Therefore, this embodiment aims to provide a magnetic drive device suitable for electric motors to solve the aforementioned technical problems.

[0029] The magnetic drive device for electric motors disclosed in this utility model will be further described in detail below with reference to the embodiments shown in the accompanying drawings.

[0030] like Figure 1As shown, the device includes a cooperating bracket 1, a driven component 2, a fixed shaft 3, an armature 4, an end cover 5, a rotor 6, a first magnet 7, a second magnet 8, and a third magnet 9. In this embodiment, the bracket 1 is specifically a stator bracket. Furthermore, the cross-section of the stator bracket is a Z-shaped structure.

[0031] Specifically, the fixed shaft 3 is vertically fixed to the bracket 1, and the armature 4 is circumferentially disposed on the outer peripheral wall of the bracket 1. The driveable component 2 is fixed to the bracket 1 and located around the fixed shaft 3. The end cap 5 is movably sleeved on the fixed shaft 3, including an outer portion 51 and an inner portion 52. The outer portion 52 extends along the outer wall of the bracket 1 towards the armature and covers the armature 4; the inner portion 52 extends circumferentially and vertically from the outer portion 51 to the driveable component 2. The rotor 6 is fixed to the empty end of the outer portion 51 and is spaced apart from the armature 4. The first magnet 7 is attached to the inner wall of the rotor 6 and spaced apart from the armature 4; the second magnet 8 is circumferentially attached to the outer wall of the driveable component 2, and the third magnet 9 is circumferentially attached to the inner portion 52 near the driveable component 2. Specifically, the inner portion 52 can be located inside or outside the drive member 2. In this embodiment, the inner portion 52 is specifically located inside the drive member 2, and the third magnet 9 is circumferentially attached to the outer periphery of the inner portion 52. The end cover 5 and the rotor 6 can be fixed by a fastener or by a heat-shrink fitting. In this embodiment, they are specifically fixed by a fastener, which is a screw.

[0032] In practical implementation, after the armature is powered on, the rotor rotates to achieve the basic functions of the motor. During the rotor's rotation, the third magnet rotates via the end cover. The attractive and repulsive forces between the third and second magnets then drive the driven component to move, thus replacing the traditional independent additional drive source. This achieves the miniaturization and lightweight requirements of the motor, making it suitable for applications in miniaturized and lightweight scenarios such as drones.

[0033] To facilitate the installation of the magnets, in one specific embodiment, grooves are provided on both the outer peripheral wall of the drive component 2 and the inner side portion 52. The grooves on the outer peripheral wall of the drive component 2 correspond one-to-one with the second magnets 8, and the second magnets 8 are correspondingly embedded in each groove. The grooves on the inner side portion 52 correspond one-to-one with the third magnets 9, and the third magnets 9 are correspondingly embedded in each groove. In a specific implementation, the grooves can be rectangular grooves, U-shaped grooves, or dovetail grooves. In this embodiment, the grooves are specifically rectangular groove structures.

[0034] In a preferred embodiment, to improve the strength of the magnetic force between the second magnet 8 and the third magnet 9 and thus enhance the reliability of the magnetic drive, the distance between the second magnet 8 and the third magnet 9 is set to be in the range of 0.2mm to 3mm. Simultaneously, the second magnet 8 and the third magnet 9 are also set to have the same height, and are deployed at the same height.

[0035] In this embodiment, the driven component 2 is an oil-cooled oil pump. During implementation, the attractive and repulsive forces between the second magnet 8 and the third magnet 9 drive the rotor shaft of the oil-cooled oil pump to move the internal gears, which in turn drive the external gears through meshing, thereby realizing the oil suction and delivery process of the oil-cooled oil pump.

[0036] This embodiment also provides an electric motor. The electric motor includes the aforementioned magnetic drive device suitable for electric motors. Therefore, the electric motor also has the technical advantages of miniaturization and lightweight design.

[0037] In one specific implementation, the motor is an oil-cooled motor, and the component to be driven by the magnetic drive device within the oil-cooled motor is an oil-cooled oil pump.

[0038] As a further implementation, the oil-cooled motor is specifically a flat wire motor. In this case, the flat wire motor has the technical advantages of low noise and strong power, as well as the advantages of lighter weight and smaller size.

[0039] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. A magnetic drive device suitable for electric motors, characterized in that, include: The components include a support frame, a drive unit, a fixed shaft, an armature, an end cap, a rotor, a first magnet, a second magnet, and a third magnet that work together. The fixed shaft is vertically fixed to the bracket, the armature is circumferentially disposed on the outer peripheral wall of the bracket, and the driveable component is fixed to the bracket and located around the fixed shaft. The end cap is movably sleeved on the fixed shaft and includes an outer portion and an inner portion. The outer portion extends along the outer peripheral wall of the bracket towards the armature and covers the armature above it. The inner portion extends circumferentially and vertically from the outer portion to the driveable component. The rotor is fixed to the empty end of the outer portion and is spaced apart from the armature. The first magnet is attached to the inner peripheral wall of the rotor and spaced apart from the armature. The second magnet is circumferentially attached to the outer peripheral wall of the driveable component, and the third magnet is circumferentially attached to the inner portion near the driveable component.

2. The magnetic drive device for an electric motor according to claim 1, characterized in that, The outer peripheral wall of the component to be driven has grooves on its inner side; the second magnet and the third magnet are embedded in the corresponding grooves.

3. The magnetic drive device for electric motors according to claim 2, characterized in that, The groove is a rectangular groove, a U-shaped groove, or a dovetail groove.

4. The magnetic drive device for an electric motor according to claim 1, characterized in that, The distance between the second magnet and the third magnet ranges from 0.2 mm to 3 mm.

5. The magnetic drive device for an electric motor according to claim 1, characterized in that, The second magnet and the third magnet have the same height dimension, and the second magnet and the third magnet are deployed at the same height.

6. The magnetic drive device for an electric motor according to claim 1, characterized in that, The component to be driven is an oil-cooled oil pump.

7. The magnetic drive device for an electric motor according to claim 1, characterized in that, The end cap is fixed to the rotor by a fastener or a heat-shrink fitting.

8. An electric motor, characterized in that, Includes the magnetic drive device for electric motors as described in any one of claims 1 to 7.

9. The motor according to claim 8, characterized in that, It is an oil-cooled motor, and the magnetic drive device is used to drive the oil-cooled oil pump.

10. The motor according to claim 8, characterized in that, It is a flat wire motor.

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