Multi-pole multi-layer sheet type direct current brushless combined motor

Abstract

The utility model discloses a multi-pole multi-layer sheet type direct current brushless combined motor, which comprises a front end cover, a rear end cover, a central shaft, coil layers and magnetic pole layers, the two ends of the central shaft respectively rotate on the front end cover and the rear end cover, a plurality of coil layers are sequentially stacked between the front end cover and the rear end cover along the axial direction, and the magnetic pole layers are arranged between the front end cover and the rear end cover. The coil layer comprises a coil fixing plate and coil assemblies, a circular mounting groove is formed in the middle of one side face of the coil fixing plate, and the multiple coil assemblies are evenly arranged at the bottom of the circular mounting groove in the circumferential direction; a magnetic pole layer is arranged between every two adjacent coil layers, the magnetic pole layer comprises a magnetic pole fixing disc and magnetic poles, the magnetic pole fixing disc is fixed on the central shaft and can rotate in the circular mounting groove, a plurality of magnetic poles are uniformly fixed on the magnetic pole fixing disc along the circumferential direction, the magnetic poles are positioned on one side of the coil assembly, and the magnetic poles in the magnetic pole layer adopt planar multi-pole magnetization. The polarities of the opposite ends of the magnetic poles on the two adjacent magnetic pole fixing discs are opposite. The internal space of the motor can be fully utilized, and the motor power is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a multi-pole multi-layer chip type DC brushless combined motor. Background Art

[0002] There are many types of motors, such as AC motors and DC motors. DC motors are divided into brushed motors and brushless motors. Existing brushless DC motors are mainly composed of a housing, end covers, stators, rotor magnets, shafts, bearings, etc. Usually, the magnetization direction of the rotor magnet is radial. In the case of limited space, the radial magnetization rotor structure cannot fully utilize the space and cannot generate maximum power. Utility Model Content

[0003] The utility model aims to provide a multi-pole multi-layered brushless DC combination motor to solve the problems existing in the above-mentioned prior art, and can make full use of the internal space of the motor and improve the motor power.

[0004] To achieve the above purpose, the utility model provides the following solutions:

[0005] The utility model provides a multi-pole multi-layer chip type DC brushless combination motor, comprising a front end cover, a rear end cover and a central shaft, wherein two ends of the central shaft rotate on the front end cover and the rear end cover respectively through bearings, and further comprising a coil layer and a magnetic pole layer, wherein a plurality of coil layers are stacked in sequence along the axial direction between the front end cover and the rear end cover, and each coil layer is fixed between the front end cover and the rear end cover, and the coil layer comprises a coil fixing plate and a coil assembly, wherein a through hole is provided in the middle of the coil fixing plate for the passage of the central shaft, and a circular mounting groove is provided in the middle of one side surface of the coil fixing plate, and a plurality of coils are evenly provided at the bottom of the circular mounting groove along the circumferential direction. An assembly, wherein the coil assembly comprises an iron core fixed to the bottom of the circular mounting groove and a coil winding wound on the iron core; a magnetic pole layer is arranged between each two adjacent coil layers, and the magnetic pole layer comprises a magnetic pole fixing disk and a magnetic pole, the magnetic pole fixing disk is fixed to the central axis and can rotate in the circular mounting groove, a plurality of magnetic pole mounting holes are evenly arranged on the magnetic pole fixing disk along the circumferential direction, and a magnetic pole is fixedly arranged in each of the magnetic pole mounting holes, and the magnetic pole is located on one side of the coil assembly, and the magnetic poles in the magnetic pole layer are magnetized by planar multi-pole magnetization, and the opposite ends of the magnetic poles on the two adjacent magnetic pole fixing disks have opposite polarities.

[0006] Preferably, each coil fixing plate is clamped and fixed between the front end cover and the rear end cover by bolts.

[0007] Preferably, the coil winding is wound on the iron core in a planar sector shape.

[0008] Compared with the prior art, the utility model has achieved the following technical effects:

[0009] The utility model provides a multi-pole multi-layer chip-type DC brushless combination motor, in which the coil layer and the magnetic pole layer are axially arranged and combined, a circular installation groove is arranged in the middle of one side surface of a coil fixing plate, a plurality of coil components are evenly arranged along the circumferential direction at the groove bottom of the circular installation groove, and the magnetic pole layer is rotatably arranged in the circular installation groove, the magnetic poles on the magnetic pole layer are arranged on one side of the coil component, the magnetic poles in the magnetic pole layer are magnetized by planar multi-pole, the internal space between the front cover and the rear cover can be fully utilized, the utility model has the advantages of small size, high power and light weight, and the capacity can be changed according to the number of layers of the coil layer and the magnetic pole layer, thereby reducing the production cost and improving the enterprise benefit. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0011] Figure 1 A schematic cross-sectional structure diagram of a multi-pole multi-layered brushless DC combination motor provided by the utility model;

[0012] Figure 2 This is a front view structural diagram of the coil layer in the utility model;

[0013] Figure 3 It is a schematic diagram of the cross-sectional structure of the coil layer in the utility model;

[0014] Figure 4 This is a schematic diagram of the front view structure of the magnetic pole layer in the utility model;

[0015] Figure 5 It is a schematic diagram of the cross-sectional structure of the magnetic pole layer in the utility model;

[0016] Figure 6 It is a front view structural diagram of the rear end cover of the utility model;

[0017] Figure 7 It is a front view structural schematic diagram of the front end cover in the utility model.

[0018] In the figure: 1-front end cover, 2-rear end cover, 3-center axis, 4-bearing, 5-coil layer, 6-pole layer, 7-coil fixing plate, 8-coil assembly, 9-through hole, 10-circular mounting groove, 11-iron core, 12-coil winding, 13-pole fixing plate, 14-pole, 15-pole mounting hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] The utility model aims to provide a multi-pole multi-layered DC brushless combination motor to solve the problems existing in the prior art, and can fully utilize the internal space of the motor and improve the motor power.

[0021] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] like Figure 1-Figure 7 As shown, this embodiment provides a multi-pole multi-layer chip DC brushless combination motor, including a front cover 1, a rear cover 2 and a central shaft 3, both ends of the central shaft 3 are respectively rotated on the front cover 1 and the rear cover 2 through bearings 4, and also includes a coil layer 5 and a magnetic pole layer 6, a plurality of coil layers 5 are stacked in sequence along the axial direction between the front cover 1 and the rear cover 2, each coil layer 5 is fixed between the front cover 1 and the rear cover 2, the coil layer 5 includes a coil fixing plate 7 and a coil assembly 8, a through hole 9 is provided in the middle of the coil fixing plate 7 for the passage of the central shaft 3, a circular mounting groove 10 is provided in the middle of one side of the coil fixing plate 7, and a plurality of coil assemblies 8 are evenly arranged at the bottom of the circular mounting groove 10 along the circumferential direction. The coil assembly 8 includes an iron core 11 fixed to the bottom of the circular mounting groove 10 and a coil winding 12 wound on the iron core 11; a magnetic pole layer 6 is provided between each two adjacent coil layers 5, and the magnetic pole layer 6 includes a magnetic pole fixing disk 13 and a magnetic pole 14. The magnetic pole fixing disk 13 is fixed on the central axis 3 and can rotate in the circular mounting groove 10. A plurality of magnetic pole mounting holes 15 are evenly arranged on the magnetic pole fixing disk 13 along the circumferential direction, and a magnetic pole 14 is fixed in each magnetic pole mounting hole 15. The magnetic pole 14 is located on one side of the coil assembly 8. The magnetic pole 14 in the magnetic pole layer 6 adopts planar multi-pole magnetization, and the opposite ends of the magnetic poles 14 on the two adjacent magnetic pole fixing disks 13 have opposite polarities.

[0023] By arranging and combining the coil layer 5 and the magnetic pole layer 6 along the axial direction, a circular mounting groove 10 is set in the middle of one side of the coil fixing plate 7, and a plurality of coil assemblies 8 are evenly set along the circumferential direction at the bottom of the circular mounting groove 10, and the magnetic pole layer 6 is rotated and set in the circular mounting groove 10, and the magnetic pole 14 on the magnetic pole layer 6 is set on one side of the coil assembly 8. The magnetic pole 14 in the magnetic pole layer 6 adopts planar multi-pole magnetization, which can make full use of the internal space between the front cover 1 and the rear cover 2, has a small size, high power, and light weight, and the capacity can be changed according to the number of layers of the coil layer 5 and the magnetic pole layer 6, thereby reducing production costs and improving enterprise benefits.

[0024] In this embodiment, each coil fixing plate 7 is clamped and fixed between the front cover 1 and the rear cover 2 by bolts, so as to facilitate assembly.

[0025] In this embodiment, the coil winding 12 is wound on the iron core 11 in a planar sector shape to fully utilize the internal space in the circumferential direction.

[0026] The multi-pole multi-layer chip-type DC brushless combination motor provided by the utility model increases the corresponding power as the number of layers of the coil layer 5 and the magnetic pole layer 6 increases, and the power can be changed accordingly by changing the number of layers. Different numbers of coil layers 5 and magnetic pole layers 6 can be set according to customer needs. The coil layer 5 and the magnetic pole layer 6 are two or more layers, and the number of pole pairs of the magnetic pole layer 6 is more than four poles, which becomes a multi-pole multi-layer motor. The coil layer 5 and the magnetic pole layer 6 are arranged and combined in an axial manner, which is easy to assemble and can make full use of the internal space of the motor. The coil layer 5 and the magnetic pole layer 6 can be cast and plastic-sealed by epoxy glue, or a metal barrier can be used to isolate one group of coil layers 5 and magnetic pole layers 6 from another group of coil layers 5 and magnetic pole layers 6. Each layer of each coil layer 5 can be connected in series or in parallel.

[0027] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A multi-pole multi-layered brushless DC motor, comprising a front cover, a rear cover and a central shaft, wherein both ends of the central shaft rotate on the front cover and the rear cover respectively through bearings, characterized in that: It also includes a coil layer and a magnetic pole layer, a plurality of coil layers are stacked in sequence along the axial direction between the front end cover and the rear end cover, each coil layer is fixed between the front end cover and the rear end cover, the coil layer includes a coil fixing plate and a coil assembly, a through hole is provided in the middle of the coil fixing plate for the passage of the central axis, a circular mounting groove is provided in the middle of one side of the coil fixing plate, a plurality of coil assemblies are evenly arranged at the bottom of the circular mounting groove along the circumferential direction, and the coil assembly includes an iron core fixed to the bottom of the circular mounting groove and a core wound on the bottom of the circular mounting groove. Coil windings on an iron core; a magnetic pole layer is provided between each two adjacent coil layers, the magnetic pole layer comprises a magnetic pole fixing disk and a magnetic pole, the magnetic pole fixing disk is fixed on the central axis and can rotate in the circular mounting groove, a plurality of magnetic pole mounting holes are evenly arranged along the circumferential direction on the magnetic pole fixing disk, a magnetic pole is fixedly arranged in each of the magnetic pole mounting holes, the magnetic pole is located on one side of the coil assembly, the magnetic poles in the magnetic pole layer are magnetized by planar multi-pole magnetization, and the opposite ends of the magnetic poles on the two adjacent magnetic pole fixing disks have opposite polarities.

2. The multi-pole multi-layered brushless DC motor according to claim 1, characterized in that: Each coil fixing plate is clamped and fixed between the front end cover and the rear end cover by bolts.

3. The multi-pole multi-layered brushless DC motor according to claim 1, characterized in that: The coil winding is wound on the iron core in a planar sector shape.

Images