CN217216187U

CN217216187U - Novel motor device

Info

Publication number: CN217216187U
Application number: CN202220946124.9U
Authority: CN
Inventors: 王德良
Original assignee: Hangzhou Jianbing Laser Technology Co ltd
Current assignee: Hangzhou Jianbing Laser Technology Co ltd
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2022-08-16
Anticipated expiration: 2032-04-22

Abstract

The utility model discloses a novel motor device, which comprises a PCB motherboard, a motor shell, a magnetic ring, a rotating device and a bearing; a cylindrical accommodating cavity is formed in the motor shell, and the outer ring of the bearing is fixedly arranged on the end face of one end of the motor shell; the PCB motherboard is arranged at the bottom of the accommodating cavity of the motor shell and is provided with an MCU, a power supply, a logic chip, an MOS tube driving circuit and two electromagnetic coils, the PCB motherboard is circular, the centers of the two electromagnetic coils are arranged on an arc of a circle with the same diameter and taking the center of the PCB motherboard as a circular point, and the included angle between the centers of the two electromagnetic coils and two connecting lines at the center of the PCB motherboard is 90 degrees. The utility model has simple structure and convenient use; the influence of the size problem of the motor is greatly reduced, and the possibility of innovation is improved; in the production process, the motor does not need to be strictly screened, so that the production cost is reduced.

Description

Novel motor device

Technical Field

The utility model relates to the technical field of electric machines, specifically a novel motor device.

Background

Along with the more mature modern construction, intelligent products gradually develop towards miniaturization and portability, motors are an indispensable part of most intelligent products, the motors are the miniature brushless direct current motors, stepping motors and the like which are most widely applied at present, the motors are mainly used on various intelligent household devices, and the devices have the characteristics of high response speed, small operation sound, simplicity in control and the like.

There are two types of dc motors on the market today: one is brush direct current motor, brush motor stator install fixed brush and main magnetic pole, rotor install armature winding and commutator, direct current electrical energy of power supply enter armature winding through brush and commutator, produce armature current and then produce the magnetic field, the magnetic field produced by armature current interacts with main magnetic field and produces the electromagnetic torque, make the motor rotate and drive the load, because there are brushes and commutators, the structure of the brush motor is more complicated, the commutating spark is apt to produce the electromagnetic interference, reliability poor and characteristic such as being short-lived; the other is a brushless DC motor, which removes the brush, puts the armature on the stator, and the rotor is made into permanent magnet, the structure is just opposite to the brush DC motor, makes the phase windings of the stator armature continuously change phase and electrify, makes the stator magnetic field continuously change with the position of the rotor, makes the stator magnetic field and the rotor permanent magnetic field always keep the left and right space angle, generates torque to push the rotor to rotate, although the brushless DC motor can solve the defect of the brush motor, the cost is high, and the size is bigger.

The direct current motor is easy to operate, small and convenient, and is particularly important, precise instruments and meters tend to be small and portable more and more, the space for installing the motor is small for equipment needing the motor, and the spaces of different equipment are different, so that inconvenience in production is brought to motor manufacturers.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a purpose is fixed and the volume is great, the cost is higher in order to solve brushless DC motor size on the current market, influences the portability and the creative scheduling problem of product, in order to solve these problems, provides a simple structure, and convenient to use reduces manufacturing cost's novel motor device.

In order to achieve the above object, the utility model provides a following technical scheme:

a novel motor device comprises a PCB mother board, a motor shell, a magnetic ring, a rotating device and a bearing; a cylindrical accommodating cavity is formed in the motor shell, and the outer ring of the bearing is fixedly arranged on the end face of one end of the motor shell; the PCB mother board is arranged at the bottom of the accommodating cavity of the motor shell and is provided with an MCU, a power supply, a logic chip, an MOS tube driving circuit and two electromagnetic coils, the PCB mother board is circular, the centers of the two electromagnetic coils are arranged on an arc of a circle with the same diameter and taking the center of the PCB mother board as a circular point, the included angle between the centers of the two electromagnetic coils and two connecting lines of the center of the PCB mother board is 90 degrees, the MCU is respectively and electrically connected with the power supply and the logic chip, and the MOS tube driving circuit is respectively and electrically connected with the logic chip and the two electromagnetic coils; the rotating device is provided with a rotating shaft and a chassis, the chassis is arranged in an accommodating cavity of the motor shell, one end of the rotating shaft is fixed with the chassis, the other end of the rotating shaft is matched with the inner ring of the bearing and penetrates through the bearing to be arranged on the outer side of the motor shell, the chassis is close to one surface of the PCB mother board, which is provided with the electromagnetic coil, and the distance between the chassis and the electromagnetic coil is set to be 2 mm; the magnetic ring is arranged on the chassis, the rotating shaft penetrates through the magnetic ring and is fixed with the magnetic ring, the magnetic ring is provided with 5 fan-shaped magnets with the same size, the magnetic poles of two adjacent fan-shaped magnets in the fan-shaped magnets are arranged correspondingly, and the two electromagnetic coils are positioned in the projection range of the ring of the magnetic ring.

In the scheme, the PCB motherboard is fixed at the bottom of the motor shell, and after the PCB motherboard is powered on, the MCU can control the rotation of the motor by controlling the high and low levels of the output pin of the logic chip through an IO port, for example, when the control is high level, the logic chip controls the MOS tube driving circuit to electrify the two electromagnetic coils according to the same direction, the electrified coils generate electromagnetic fields, thereby generating magnetic force to attract the magnetic ring to rotate, the magnetic ring is fixed on the shaft and is arranged according to opposite magnetic poles, when the upper surface of the electromagnetic coil is provided with an N pole, the S pole on the magnetic ring is attracted, the turntable starts to rotate, the upper surface of the other coil is also provided with an N pole, and the S pole of the magnetic ring is also attracted, because the magnetic ring is composed of 5 permanent magnets, the sector angle of each magnet on the magnetic ring is 72 degrees, the included angle of the two electromagnetic coils is 90 degrees, and the repulsive force and attractive force of the electromagnetic coils to the fan-shaped magnet of the magnetic ring are always unequal, so that the magnetic ring can drive the rotating shaft to rotate all the time; the motor shell is provided with a cylindrical accommodating cavity which can accommodate the PCB motherboard, the magnetic ring and the rotating device, and one end of the motor shell is provided with an end cover which is convenient for mounting parts; the two electromagnetic coils are positioned in the projection range of the magnetic ring on the PCB motherboard.

As the preferred scheme of the utility model, solenoid be equipped with coil type skeleton and enameled wire. In the scheme, the enameled wire is wound on the outer side of the coil-shaped framework, and the number of winding turns and the size of the wire diameter can be determined according to needs.

As the preferred proposal of the utility model, a double-sided glue layer is arranged between the magnetic ring and the chassis. The magnetic ring and the chassis are fixed together through the double faced adhesive tape.

As the utility model discloses preferred scheme, PCB motherboard diameter, chassis diameter be less than the cylindrical intracavity diameter that holds of motor casing, the magnetic ring external diameter be less than the chassis diameter. The diameter of the PCB mother board and the diameter of the chassis of the scheme are smaller than the inner diameter of the cylindrical accommodating cavity of the motor shell, so that the installation is convenient.

As the utility model discloses preferred scheme, the PCB motherboard be equipped with the pad, two solenoid welded fastening respectively on the pad.

Compared with the prior art, the beneficial effects of the utility model are that: (1) the structure is simple, and the use is convenient; (2) the influence of the size problem of the motor is greatly reduced, and the possibility of innovation is improved; (3) in the production process, the motor does not need to be strictly screened, so that the production cost is reduced.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the rotating device of the present invention.

Fig. 3 is a schematic structural view of the magnetic ring of the present invention.

In the figure: 1. PCB mother board 2, motor casing 3, magnetic ring 4, rotary device 5, bearing 6, hold chamber 7, solenoid 8, pivot 9, chassis.

Detailed Description

In order to facilitate understanding of the invention, the invention will be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the invention are shown, but which can be embodied in many different forms and are not limited to the embodiments described herein, but rather are provided for the purpose of making the disclosure more thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present, that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, and that the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-3, the present invention provides a technical solution:

a novel motor device comprises a PCB mother board 1, a motor shell 2, a magnetic ring 3, a rotating device 4 and a bearing 5; a cylindrical accommodating cavity 6 is arranged in the motor shell 2, and the outer ring of the bearing 5 is fixedly arranged on the end face of one end of the motor shell 2; the PCB mother board 1 is arranged at the bottom of the accommodating cavity 6 of the motor shell 2, the PCB mother board 1 is provided with an MCU, a power supply, a logic chip, an MOS tube driving circuit and two electromagnetic coils 7, the PCB mother board 1 is circular, the centers of the two electromagnetic coils 7 are arranged on an arc of a circle with the same diameter and taking the center of the PCB mother board as a circular point, the included angle between the centers of the two electromagnetic coils 7 and two connecting lines of the center of the PCB mother board 1 is 90 degrees, the MCU is respectively electrically connected with the power supply and the logic chip, and the MOS tube driving circuit is respectively electrically connected with the logic chip and the two electromagnetic coils; the rotating device 4 is provided with a rotating shaft 8 and a chassis 9, the chassis 9 is arranged in the accommodating cavity 6 of the motor shell 2, one end of the rotating shaft 8 is fixed with the chassis 9, the other end of the rotating shaft is matched with the inner ring of the bearing 5 and penetrates through the bearing 5 to be arranged on the outer side of the motor shell 2, the chassis 9 is close to one surface of the PCB motherboard 1, which is provided with the electromagnetic coil 7, and the distance between the chassis 9 and the electromagnetic coil 7 is set to be 2 mm; the magnetic ring 3 is arranged on the chassis 9, the rotating shaft 8 penetrates through the magnetic ring 3 and is fixed with the magnetic ring 3, the magnetic ring 3 is provided with 5 fan-shaped magnets with the same size, the magnetic poles of two adjacent fan-shaped magnets in the fan-shaped magnets are arranged correspondingly, and the two electromagnetic coils 7 are positioned in the projection range of the ring of the magnetic ring 3.

The electromagnetic coil 7 is provided with a coil type skeleton and an enameled wire.

A double-sided adhesive layer is arranged between the magnetic ring 3 and the chassis 9.

The diameter of the PCB motherboard 1 and the diameter of the chassis 9 are smaller than the inner diameter of the cylindrical accommodating cavity 6 of the motor shell 2, and the outer diameter of the magnetic ring 3 is smaller than the diameter of the chassis 9.

The PCB motherboard 1 is provided with a bonding pad, and the two electromagnetic coils 7 are respectively welded and fixed on the bonding pad.

The utility model discloses specific use:

after the power is on, the MCU controls the MOS tube driving circuit through the logic chip to enable the two electromagnetic coils 7 to be powered on in the same direction, the power-on coils 7 generate electromagnetic fields, and therefore magnetic force is generated to attract the magnetic ring 3 to rotate, the magnetic ring is fixed on the chassis and the rotating shaft, and the chassis and the rotating shaft are driven to rotate together by the magnetic ring.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A novel motor device is characterized in that: the magnetic circuit board comprises a PCB mother board, a motor shell, a magnetic ring, a rotating device and a bearing;

a cylindrical accommodating cavity is formed in the motor shell, and the outer ring of the bearing is fixedly arranged on the end face of one end of the motor shell;

the PCB mother board is arranged at the bottom of the accommodating cavity of the motor shell and is provided with an MCU, a power supply, a logic chip, an MOS tube driving circuit and two electromagnetic coils, the PCB mother board is circular, the centers of the two electromagnetic coils are arranged on an arc of a circle with the same diameter and taking the center of the PCB mother board as a circular point, the included angle between the centers of the two electromagnetic coils and two connecting lines of the center of the PCB mother board is 90 degrees, the MCU is respectively and electrically connected with the power supply and the logic chip, and the MOS tube driving circuit is respectively and electrically connected with the logic chip and the two electromagnetic coils;

the rotating device is provided with a rotating shaft and a chassis, the chassis is arranged in an accommodating cavity of the motor shell, one end of the rotating shaft is fixed with the chassis, the other end of the rotating shaft is matched with the inner ring of the bearing and penetrates through the bearing to be arranged on the outer side of the motor shell, the chassis is close to one surface of the PCB mother board, which is provided with the electromagnetic coil, and the distance between the chassis and the electromagnetic coil is set to be 2 mm;

the magnetic ring is arranged on the chassis, the rotating shaft penetrates through the magnetic ring and is fixed with the magnetic ring, the magnetic ring is provided with 5 fan-shaped magnets with the same size, the magnetic poles of two adjacent fan-shaped magnets in the fan-shaped magnets are arranged correspondingly, and the two electromagnetic coils are positioned in the projection range of the ring of the magnetic ring.

2. The novel electric machine assembly of claim 1, wherein: the electromagnetic coil is provided with a coil type framework and an enameled wire.

3. The novel electric machine assembly of claim 1, wherein: and a double-sided adhesive layer is arranged between the magnetic ring and the chassis.

4. The novel electric machine assembly of claim 1, wherein: the diameter of the PCB motherboard and the diameter of the chassis are smaller than the inner diameter of a cylindrical accommodating cavity of the motor shell, and the outer diameter of the magnetic ring is smaller than the diameter of the chassis.

5. The novel electric machine assembly of claim 1, wherein: the PCB motherboard is provided with a bonding pad, and the two electromagnetic coils are respectively welded and fixed on the bonding pad.