Radial magnetic flux dual-rotor active heat dissipation frameless torque motor

Abstract

The invention relates to a radial magnetic flux dual-rotor active heat dissipation frameless torque motor, and belongs to the technical field of frameless torque motors, the radial magnetic flux dual-rotor active heat dissipation frameless torque motor comprises a rotor assembly and a stator assembly, the rotor assembly comprises an inner rotor steel sleeve and an outer rotor steel sleeve, an inner rotor magnet is arranged on the inner rotor steel sleeve, an outer rotor magnet is arranged on the outer rotor steel sleeve, the stator assembly comprises a lower fixing plate, a coil winding is arranged on the upper side of the lower fixing plate, and an upper fixing plate is arranged on the upper side of the coil winding; the rotational inertia of the rotor can be improved through the plurality of inner rotor magnets and the plurality of outer rotor magnets, the size of the motor is reduced, the space utilization rate is improved, the motor is compact in structure, high in slot fullness rate and high in efficiency, the motor can actively dissipate heat through the heat dissipation blades, manufacturing and winding are extremely convenient, and mass production is facilitated.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of frameless torque motor, and particularly relates to a frameless torque motor with radial through-magnetic double-rotor active heat dissipation. BACKGROUND

[0002] A motor is a device for converting electrical energy into mechanical energy, and a torque motor is a special type of motor that is optimized for direct output of high torque rather than high speed. It can be imagined as a "Hercules" that can stably output huge force at low speed or even at a state of blocking rotation (stopping rotation). Traditional motors all have a shell, bearings and an output shaft, while a frameless torque motor does not have these components. It essentially only contains two core components, namely a rotor and a stator. The rotor is a group of permanent magnets, usually a ring-shaped component, and the stator is an iron core with copper windings, also usually a ring-shaped component.

[0003] Existing radial frameless torque motors mostly adopt an inner rotor structure, in which the coil is fixed to the shell and the main shaft is the rotor. Although high-speed rotation can be achieved, the number of poles is small and the moment of inertia is small, resulting in weak torque output capacity. In order to improve the moment of inertia of the rotor, a frameless torque motor with radial through-magnetic double-rotor active heat dissipation is needed. SUMMARY

[0004] The purpose of the present application is to provide a frameless torque motor with radial through-magnetic double-rotor active heat dissipation that is simple in structure and reasonable in design to solve the above problems.

[0005] The application achieves the above-mentioned purpose through the following technical solutions: A frameless torque motor with radial through-magnetic double-rotor active heat dissipation includes a rotor assembly and a stator assembly. The rotor assembly includes an inner rotor steel sleeve and an outer rotor steel sleeve. The inner rotor steel sleeve is provided with an inner rotor magnet, and the outer rotor steel sleeve is provided with an outer rotor magnet. The stator assembly includes a lower fixed plate, the upper side of which is provided with a coil winding, and the upper side of the coil winding is provided with an upper fixed plate.

[0006] As a further optimization scheme of the present application, the inner rotor steel sleeve and the outer rotor steel sleeve are concentrically arranged.

[0007] As a further optimization scheme of the present application, the inner rotor magnet is provided with a plurality of inner rotor magnets, which are equally spaced on the outer wall of the inner rotor steel sleeve.

[0008] As a further optimization scheme of the present application, the outer rotor magnet is provided with a plurality of outer rotor magnets, which are equally spaced on the inner wall of the outer rotor steel sleeve.

[0009] As a further optimization scheme of the present application, the coil winding is provided with a plurality of coil windings, and the plurality of coil windings are equidistantly arranged between the lower fixed plate and the upper fixed plate.

[0010] As a further optimization scheme of the present application, each of the coil windings comprises a plurality of laminations, the outer sides of the plurality of laminations are spirally wound with coils, the upper sides and the lower sides of the plurality of laminations are provided with lamination fixing feet, the upper lamination fixing feet are welded on the upper fixed plate, and the lower lamination fixing feet are welded on the lower fixed plate.

[0011] As a further optimization scheme of the present application, the inner rotor steel sleeve and the outer rotor steel sleeve are both in an L-shaped structure in cross section, and the upper side of the inner rotor steel sleeve and the bottom of the outer rotor steel sleeve are both provided with a plurality of heat dissipation blades.

[0012] The present application has the following beneficial effects: 1. In the present application, the rotational inertia of the rotor can be improved by the plurality of inner rotor magnets and the plurality of outer rotor magnets, the volume of the motor can be reduced, the space utilization can be improved, the motor structure is compact, the slot fill rate is high, and the efficiency is high.

[0013] 2. In the present application, the motor can be actively cooled by the heat dissipation blades, the winding pole is convenient to make, and mass production is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present application; Figure 2 is a schematic diagram of the overall structure of the present application; Figure 3 is a schematic diagram of the overall structure of the stator assembly of the present application; Figure 4 is a schematic diagram of the overall structure of the stator assembly of the present application; Figure 5 is a schematic diagram of the overall structure of the rotor assembly of the present application; Figure 6 is a schematic diagram of the overall structure of the coil winding of the present application.

[0015] In the figure: 1, rotor assembly; 101, inner rotor steel sleeve; 102, inner rotor magnet; 103, outer rotor steel sleeve; 104, outer rotor magnet; 2, stator assembly; 201, lower fixed plate; 202, coil winding; 2021, lamination; 2022, coil; 2023, lamination fixing foot; 203, upper fixed plate; 3, heat dissipation blade. DETAILED DESCRIPTION

[0016] The application will be described in further detail below with reference to the drawings. It is necessary to point out here that the following specific embodiments are only used to further illustrate the application and cannot be understood as limiting the scope of protection of the application. Those skilled in the art can make some non-essential improvements and adjustments to the application according to the above application content.

[0017] Embodiment 1: as shown in Figure 1 , Figure 2 , Figure 5 A frameless torque motor with radial through-magnetic double-rotor active heat dissipation is shown in the drawings, which comprises a rotor assembly 1 and a stator assembly 2. The rotor assembly 1 comprises an inner rotor steel sleeve 101 and an outer rotor steel sleeve 103. The cross sections of the inner rotor steel sleeve 101 and the outer rotor steel sleeve 103 are both "L" shaped structures. A plurality of ventilation openings are formed on the upper side of the inner rotor steel sleeve 101 and the bottom of the outer rotor steel sleeve 103. A plurality of heat dissipation blades 3 are arranged on the inner sides of the ventilation openings. The plurality of heat dissipation blades 3 are inclined inward. When the rotor rotates, the blades fan the air flow, thereby achieving the heat dissipation effect. A plurality of inner rotor magnets 102 are arranged on the inner rotor steel sleeve 101. The plurality of inner rotor magnets 102 are equally spaced on the outer wall of the inner rotor steel sleeve 101. A plurality of outer rotor magnets 104 are arranged on the outer rotor steel sleeve 103. The plurality of outer rotor magnets 104 are equally spaced on the inner wall of the outer rotor steel sleeve 103. In use, the plurality of inner rotor magnets 102 and the plurality of outer rotor magnets 104 can jointly act with the coil to improve the rotational inertia of the rotor.

[0018] As shown in Figure 2 , Figure 3 , Figure 4 , Figure 6 The stator assembly 2 comprises a lower fixed plate 201. A plurality of coil windings 202 are arranged on the upper side of the lower fixed plate 201. An upper fixed plate 203 is arranged on the upper side of the plurality of coil windings 202. The plurality of coil windings 202 are equally spaced. Each coil winding 202 comprises a plurality of laminations 2021. The outer side of the plurality of laminations 2021 is spirally wound with a coil 2022. The side of the magnetic force generated by the coil 2022 close to the inner rotor steel sleeve 101 is S pole. The side of the magnetic force generated by the coil 2022 close to the outer rotor steel sleeve 103 is N pole. The upper side and the lower side of the plurality of laminations 2021 are both provided with lamination fixing feet 2023. The upper lamination fixing feet 2023 are welded on the upper fixed plate 203. The lower lamination fixing feet 2023 are welded on the lower fixed plate 201. The lamination fixing feet 2023 have 90° bending feet, which are convenient for being welded on the upper fixed plate 203 and the lower fixed plate 201 respectively, thereby fixing the plurality of independent coil windings 202 into a whole.

[0019] It should be noted that the radial magnetic flux double-rotor active heat dissipation frameless torque motor, when the coil 2022 is energized, generates a magnetic field, drives the inner rotor magnet 102 to rotate on the inside, drives the outer rotor magnet 104 to rotate on the outside, and in the process of rotating, the blades fan air flow, thereby achieving heat dissipation.

[0020] The above-described embodiments only express several embodiments of the present application, which are described in detail and specifically, but cannot be understood as a limitation on the patent scope of the present application. It should be noted that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, which are within the protection scope of the present application.

Claims

1. A frameless torque motor with radial through-magnetic dual-rotor active heat dissipation, comprising a rotor assembly (1) and a stator assembly (2), characterized in that, The rotor assembly (1) comprises an inner rotor steel sleeve (101) and an outer rotor steel sleeve (103), the inner rotor steel sleeve (101) is provided with an inner rotor magnet (102), the outer rotor steel sleeve (103) is provided with an outer rotor magnet (104), the stator assembly (2) comprises a lower fixed plate (201), the upper side of the lower fixed plate (201) is provided with a coil winding (202), the upper side of the coil winding (202) is provided with an upper fixed plate (203).

2. A frameless torque motor with two rotors and active cooling by radial magnetic flux according to claim 1, characterized in that: The inner rotor steel sleeve (101) and the outer rotor steel sleeve (103) are concentrically arranged.

3. A frameless torque motor with two rotors and active cooling by radial magnetic flux according to claim 1, characterized in that: The inner rotor magnet (102) is provided with a plurality of inner rotor magnets (102), and the plurality of inner rotor magnets (102) are arranged at equal intervals on the outer wall of the inner rotor steel sleeve (101).

4. A frameless torque motor with two rotors and active cooling by radial magnetic flux according to claim 3, characterized in that: The outer rotor magnet (104) is provided with a plurality of outer rotor magnets (104), and the plurality of outer rotor magnets (104) are arranged at equal intervals on the inner wall of the outer rotor steel sleeve (103).

5. A frameless torque motor with two rotors and active cooling by radial magnetic flux according to claim 1, characterized in that: The coil winding (202) is provided with a plurality of coil windings (202), and the plurality of coil windings (202) are arranged at equal intervals between the lower fixed plate (201) and the upper fixed plate (203).

6. A frameless torque motor with two rotors and active cooling by radial magnetic flux according to claim 5, characterized in that: Each of the coil windings (202) comprises a plurality of laminations (2021), the outer side of the plurality of laminations (2021) is spirally wound with a coil (2022), the upper side and the lower side of the plurality of laminations (2021) are provided with a lamination fixing foot (2023), the upper side of the lamination fixing foot (2023) is welded on the upper fixed plate (203), and the lower side of the lamination fixing foot (2023) is welded on the lower fixed plate (201).

7. A frameless torque motor with two rotors and active cooling by radial magnetic flux according to any of claims 1-6, characterized in that: The cross sections of the inner rotor steel sleeve (101) and the outer rotor steel sleeve (103) are both "L" shaped structures, and the upper side of the inner rotor steel sleeve (101) and the bottom of the outer rotor steel sleeve (103) are both provided with a plurality of heat dissipation blades (3).

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