CN213693419U

CN213693419U - PCB permanent magnet capacity-increasing motor

Info

Publication number: CN213693419U
Application number: CN202121319247.1U
Authority: CN
Inventors: 吴楠
Original assignee: Tianjin Yuanke Technology Development Co ltd
Current assignee: Tianjin Yuanke Technology Development Co ltd
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2021-07-13
Anticipated expiration: 2031-06-15

Abstract

The utility model provides a PCB permanent magnetism increase-volume motor, stator and the mutual parallel arrangement of rotor, axis periphery cup joint the stator, and the stator is the PCB board, and the stator is inside including a plurality of lead coils that set up along the axial, and every lead coil all includes a plurality of spiral coils along the radial setting, and the equal circuit of a plurality of spiral coils is connected, and the both ends of stator set up a rotor respectively, the equal fixed mounting in middle part to centraxonial periphery of every rotor. A PCB permanent magnetism increase capacity motor, compare in transmission brushless motor, the volume and the weight of this motor are littleer, be applicable to high-speed application, and the output is stable, the cost of manufacture is low, motor inner space utilization is high, the lateral wall width size of magnet steel group is not less than spiral coil's external diameter, ensured that the spiral coil volume is unchangeable, under the unchangeable condition of power output, magnet steel group is in saturated condition with spiral coil's working face, power output has been guaranteed, make full use of the electromagnetic effect of stator coil in the PCB motor.

Description

PCB permanent magnet capacity-increasing motor

Technical Field

The utility model belongs to PCB motor field especially relates to a PCB permanent magnetism increase-volume motor.

Background

Unmanned aerial vehicle's design size needs the output of synthesizing the motor among the prior art, and on miniature unmanned aerial vehicle's motor selection was used, how to reduce motor size and weight, and improve the output of motor under equal volume, choose the important reference factor of this accessory for use, when trying to make less cheaper unmanned aerial vehicle, make into the motor PCB board motor with the motor and will reduce miniature unmanned aerial vehicle's whole price, thereby facilitate promotion and production, ordinary outer rotor brushless motor is by the stator, the rotor is made with the axle of connecting both through the bearing. The stator is wound around an iron core to rotate the magnets on the rotor. The high magnetic conductivity of the iron core generates a strong magnetic field around each coil, so that the torque intensity of the motor is improved, the stator is printed on a PCB (printed circuit board) by the PCB motor, the weight and the volume of the stator are reduced, and the problem that how to output higher power by the PCB motor under the same volume and quality is urgently needed to be solved.

Disclosure of Invention

In view of this, the utility model aims at providing a PCB permanent-magnet capacity-increasing motor to solve the problem that the stator coil utilization ratio is low in the PCB motor.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides a PCB permanent magnetism increase-volume motor, axis, stator and rotor that includes shell and inside setting, the peripheral fixed mounting of shell to fixed position, the external power supply of stator, stator and rotor are parallel arrangement each other, the stator is cup jointed to the axis periphery, and the stator is the PCB board, the stator is inside including a plurality of lead coils that set up along the axial, every lead coil all includes a plurality of spiral coils along radial setting, a plurality of spiral coil equal circuit are connected, the both ends of stator set up a rotor respectively, the equal fixed mounting in middle part of every rotor is to centraxonial periphery.

Further, the rotors arranged at the two ends of the stator are symmetrically arranged, each rotor comprises a turntable shell and a magnetic steel group, each magnetic steel group is fixedly arranged at one end of the corresponding turntable shell, each magnetic steel group is located between the corresponding turntable shell and the corresponding stator, and the middle of each turntable shell is fixedly arranged on the periphery of the corresponding center shaft.

Furthermore, the magnetic steel group is of an annular structure, and the width of the side wall of the magnetic steel group is not smaller than the outer diameter of the spiral coil.

Furthermore, a gap is arranged between one end of the magnetic steel group and one end of the stator, and the axial length range of the gap is 0.2-1 mm.

Further, the one end of carousel shell is equipped with the mounting groove, and magnet steel group fixed mounting is not less than the degree of depth of mounting groove to the mounting groove in, and the thickness of magnet steel group.

Furthermore, the magnetic steel group is composed of a plurality of magnetic steel sheets which are uniformly distributed along the radial direction, each magnetic steel sheet is fixedly installed in the installation groove, the cross section of each magnetic steel sheet is of an arc-shaped structure, the width of each magnetic steel sheet is A, and the size of A is not smaller than the outer diameter of the spiral coil.

Further, carousel shell inner circle is equipped with the keyway, and the axis includes axis body and installation key, and the stator middle part connects to the axis body periphery through the bearing cover, and the installation key is located the keyway, and carousel shell inner circle passes through installation key fixed mounting to axis body periphery, and the jump ring fixed mounting is passed through to the axis body periphery to the one end of carousel shell.

Compared with the prior art, a PCB permanent magnetism increase-volume motor have following beneficial effect:

(1) a PCB permanent magnetism increase capacity motor, compare in transmission brushless motor, the volume and the weight of this motor are littleer, are applicable to high-speed the application, and export stably, the cost of manufacture is low, motor inner space utilization is high.

(2) A PCB permanent magnetism increase-volume motor, the lateral wall width dimension of magnet steel group is not less than spiral coil's external diameter size, has ensured under the unchangeable condition of spiral coil volume, power output, magnet steel group and spiral coil's the face of action is in the saturated condition, has guaranteed power output for more winding electric currents and magnetic field carry out the interlinkage, have increased the winding utilization ratio of PCB motor, the effectual power density that increases the PCB motor.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural diagram of a PCB permanent magnet capacity-increasing motor with a removed housing according to an embodiment of the present invention;

fig. 2 is an explosion structure diagram of a PCB permanent magnet capacity-increasing motor according to an embodiment of the present invention for removing a housing;

fig. 3 is a schematic structural diagram of a turntable housing according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a magnetic steel sheet according to an embodiment of the present invention.

Description of reference numerals:

1-medial axis; 11-a shaft body; 12-an installation key; 2-a stator; 21-a helical coil; 3-a rotor; 31-a turntable housing; 32-magnetic steel sheet; 4-clamp spring.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1-4, a PCB permanent magnet capacity-increasing motor comprises a housing, a central shaft 1, a stator 2 and a rotor 3, wherein the housing is arranged inside the housing, the periphery of the housing is fixedly mounted on a frame of an unmanned aerial vehicle, the stator 2 is externally connected with a power supply of the unmanned aerial vehicle, a propeller of the unmanned aerial vehicle is fixedly mounted on the periphery of one end of the central shaft 1, the stator 2 and the rotor 3 are arranged in parallel, the periphery of the central shaft 1 is sleeved with the stator 2, the stator 2 is a printed PCB board, the stator 2 comprises 6 layers of conductive coils arranged along an axial direction, each conductive coil comprises 8 spiral coils 21 arranged along a radial direction, the spiral coils 21 are connected in series through a circuit, and are connected to a positive electrode and a negative electrode of the power supply of the unmanned aerial vehicle to form an electromagnetic field, two ends of the stator 2 are respectively provided with one rotor 3, the middle part of each, pivoted rotor 3 drives unmanned aerial vehicle's screw rotation through axis 1 to realize unmanned aerial vehicle's take off and land, compare in transmission brushless motor, the volume and the weight of this motor are littleer, are applicable to high-speed application, and rated power is 1 tile, and output is stable, and the cost of manufacture is low, and motor inner space utilization is high.

2 both ends of stator set up the mutual symmetry setting of rotor 3 respectively, in order to ensure rotor 3's structural stability, rotor 3 includes carousel shell 31 and magnet steel group, magnet steel group fixed mounting is to the one end of carousel shell 31, and the magnet steel group is located between carousel shell 31 and the stator 2, carousel shell 31 middle part fixed mounting is to axis 1 periphery, carousel shell 31 is used for the relative position of fixed magnet steel group, ensure the rigidity mechanical strength of magnet steel group simultaneously, and the magnet steel group adopts the permanent magnetism material, ensure rotor 3's rotatory efficiency, can be as an organic whole with both fixed connection through the mode that glue bonds when the equipment.

The magnet steel group is of an annular structure, the electromagnetic field generated after the spiral coil 21 is electrified and the permanent magnet material of the magnet steel group generate interaction, under the conditions that the size of the spiral coil 21 is unchanged and the power output is unchanged, the acting surfaces of the magnet steel group and the spiral coil 21 need to be ensured to be in a saturated state as far as possible, so the width size of the side wall of the magnet steel group is not smaller than the outer diameter size of the spiral coil 21, more winding currents and magnetic fields are interlinked, the winding utilization rate of the PCB motor is increased, and the power density of the PCB motor is effectively increased.

In order to ensure the installation convenience of magnet steel group, the one end of carousel shell 31 is equipped with the mounting groove, magnet steel group fixed mounting to the mounting groove in, the staff only need bond magnet steel group to the mounting groove in through glue, target in place promptly for the installation, simultaneously in order to guarantee that the interval of magnet steel group and PCB board is controllable, the thickness of magnet steel group is not less than the degree of depth of mounting groove, ensure the terminal surface that the one end of rotor 3 is magnet steel group all the time.

Be equipped with the gap between the one end of magnet steel group and the one end of stator 2, the natural warpage when considering PCB board production and use when the preparation, need reserve 0.2mm to the warpage degree of PCB board, prevent that rotor 3 from taking place to scrape with stator 2 when rotatory and reducing output, and stator 2 and rotor 3's mechanical clearance fit need minimize to this make full use of PCB's electromagnetism effect, so the axial length scope in gap is 0.3 mm.

In order to adjust the output power of the magnetic steel group conveniently, the magnetic steel group is composed of a plurality of magnetic steel sheets 32 which are uniformly distributed along the radial direction, each magnetic steel sheet 32 is fixedly installed in the installation groove, the cross section of each magnetic steel sheet 32 is of an arc-shaped structure, the width of each magnetic steel sheet 32 is A, the size of the A is not smaller than the outer diameter of the spiral coil 21, and workers can adjust the output power of the motor by installing different numbers of magnetic steel sheets 32.

In order to ensure the installation convenience of carousel shell 31, carousel shell 31 inner circle is equipped with the keyway, and axis 1 includes axis body 11 and

installation key

12, and 2 middle parts of stator cup joint to axis body 11 peripherally through the bearing, and installation key 12 is located the keyway, and carousel shell 31 inner circle passes through installation key 12 fixed mounting to axis body 11 peripherally, and 4 fixed mounting to axis body 11 peripherally are passed through to the one end of carousel shell 31.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A PCB permanent magnetism increases-volume motor which characterized in that: comprises a shell and a middle shaft (1) arranged inside the shell, a stator (2) and a rotor (3), wherein the periphery of the shell is fixedly arranged at a fixed position, the stator (2) is externally connected with a power supply, the stator (2) and the rotor (3) are arranged in parallel, the periphery of the middle shaft (1) is sleeved with the stator (2), the stator (2) is a PCB (printed circuit board), the inside of the stator (2) comprises a plurality of guide coils arranged along the axial direction, each guide coil comprises a plurality of spiral coils (21) arranged along the radial direction, the plurality of spiral coils (21) are connected with each other in a line way, two ends of the stator (2) are respectively provided with one rotor (3), the middle part of each rotor (3) is fixedly arranged at the periphery of the middle shaft (1), the rotors (3) arranged at two ends of the stator (2) are mutually symmetrical, the rotors (3) comprise a turntable shell (31) and a magnetic steel group, and the magnetic steel group is positioned between the rotary disc shell (31) and the stator (2), the middle part of the rotary disc shell (31) is fixedly arranged to the periphery of the middle shaft (1), the magnetic steel group is of an annular structure, and the width dimension of the side wall of the magnetic steel group is not less than the outer diameter dimension of the spiral coil (21).

2. The PCB permanent magnet compatibilized motor of claim 1, wherein: a gap is arranged between one end of the magnetic steel group and one end of the stator (2), and the axial length range of the gap is 0.2mm-1 mm.

3. The PCB permanent magnet compatibilized motor of claim 1, wherein: one end of the turntable shell (31) is provided with an installation groove, the magnetic steel group is fixedly installed in the installation groove, and the thickness of the magnetic steel group is not less than the depth of the installation groove.

4. The PCB permanent magnet compatibilized motor of claim 3, wherein: the magnetic steel group is composed of a plurality of magnetic steel sheets (32) which are uniformly distributed along the radial direction, each magnetic steel sheet (32) is fixedly installed in the installation groove, the cross section of each magnetic steel sheet (32) is of an arc-shaped structure, the width of each magnetic steel sheet (32) is A, and the size of A is not smaller than the outer diameter of the spiral coil (21).

5. The PCB permanent magnet compatibilized motor of claim 1, wherein: carousel shell (31) inner circle is equipped with the keyway, and axis (1) includes axis body (11) and installation key (12), and stator (2) middle part is cup jointed to axis body (11) periphery through the bearing, and installation key (12) are located the keyway, and carousel shell (31) inner circle passes through installation key (12) fixed mounting to axis body (11) periphery, and the one end of carousel shell (31) is passed through jump ring (4) fixed mounting to axis body (11) periphery.