CN218415951U - Special permanent magnet direct current brushless motor for juicer - Google Patents

Abstract

The utility model provides a special permanent magnetism DC brushless motor of fruit juice mixer, the magnet group is fixed and is covered outside the stator module on the fan blade forked drum wall, drive the pivot and rotate, from taking the fan blade device that dispels the heat, do not need to increase the fan blade of dispelling the heat in the motor rear end additionally, the fan blade has the effect of heat dissipation as well as the effect of fixed magnetite, adopt the outer rotor structure, have great output torsion under the same volume relative to other structures, the fan blade of dispelling the heat combines with fixed magnetite to be an organic whole, reduce the motor volume; meanwhile, the rotating shaft is rotationally fixed in the cavities of the motor bracket and the stator assembly through the front bearing and the rear bearing, so that the rotating is stable, the radius is small, and the motor efficiency is high; in addition, the design of the annular Hall plate is added, the position of the rotor is sensed at any time during operation, the rotor rotation angle and the speed are controlled, the torque is large and no abnormal sound is produced during starting, and data control stable operation is provided during operation.

Description

Special permanent magnet direct current brushless motor for juicer

Technical Field

The utility model relates to the technical field of electric machines, in particular to special permanent magnet brushless DC motor of fruit juice mixer.

Background

A juicer is a machine that mechanically squeezes fruit or vegetables into juice. The household appliance is also a high-grade practical household appliance, has the characteristics of low energy consumption, environmental protection and the like, and can be widely applied to families, exclusive shops, outdoors and offices.

At present, alternating current series excited motors and direct current brush motors used by most juicer devices have short service life and large power consumption, and the motor is structurally characterized in that the motor normally rotates by the contact of a carbon brush and a commutator, the length of the carbon brush determines the service life of the motor, and the motor is limited by the structural space of the whole machine and has short service life. The carbon brush is contacted with the commutator and continuously rubs and abrades to generate mechanical noise. The contact resistance of the carbon brush and the commutator is very large, so that the whole resistance of the motor is large, the motor is easy to generate heat, the permanent magnet is a thermosensitive element, if the temperature is too high, the performance of the motor is reduced, the electric energy is converted into heat energy to a great extent by applying work on the resistor by current, and the efficiency of the motor is low.

The novel permanent magnet brushless DC motor adopts sintered permanent magnets to ensure that the novel permanent magnet brushless DC motor has the characteristics of small volume and large torque output. The motor has large starting torque and can not generate the blocking phenomenon in the work. The motor eliminates the reversing friction noise and has long service life through electromagnetic reversing. Therefore, a permanent magnet brushless direct current motor special for a juicer and having the advantages of stability, high efficiency and small size needs to be designed.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a special permanent magnet brushless DC motor of fruit juice mixer to prior art's problem, designs special permanent magnet brushless DC motor of fruit juice mixer, solves current technical problem.

The utility model aims at realizing through the following technical scheme:

a permanent magnet direct current brushless motor special for a juicer comprises a motor support, a shell fixed on the motor support and forming a component accommodating cavity with the shell, a round hole is formed in the center of the motor support, a protruding cylinder is upwards arranged on the center of the motor support, a stator component is fixedly arranged on the outer side of the cylinder and located in the component accommodating cavity, the stator component is electrically connected with an external power supply through a lead, a rotor component is rotatably and fixedly arranged through the center of the cylinder, the rotor component comprises a rotating shaft, a front bearing, a rear bearing, a magnet group, a fan blade and a clamping ring, one end of the rotating shaft is rotatably fixed on the inner side of the middle space of the stator component through the front bearing, and the other end of the rotating shaft is rotatably fixed in the round hole in the center of the motor support through the rear bearing; the fan blade is of a fork-shaped cylinder structure with one closed end, the magnet group is fixed on the fork-shaped cylinder wall of the fan blade, the rear of the fork-shaped cylinder wall of the fan blade is fixed on the outer side of the stator assembly, and the center of the closed surface of the fork-shaped cylinder of the fan blade is fixed at the top of one end of the rotating shaft through a clamping ring.

Furthermore, a wave gasket is arranged between the rear bearing of the rotating shaft fixed at the central circular hole of the motor support and the motor support.

Further, an annular Hall plate is fixedly arranged between the shell and the motor support, and the position of the annular Hall plate is opposite to the magnet group.

Further, the stator assembly comprises a stator core and a coil wound on the stator core, wherein the coil is electrically connected with an external power supply through a lead.

The beneficial effects of the utility model reside in that:

the utility model designs a special permanent magnet brushless DC motor in the aspect of the power of the juicer, a magnet group is fixed on the fan blade fork-shaped cylinder wall and covers the outer side of a stator component to drive a rotating shaft to rotate, a heat dissipation fan blade device is arranged, a heat dissipation fan blade is not needed to be additionally arranged at the rear end of the motor, the fan blade has the functions of heat dissipation and magnet fixation, an outer rotor structure is adopted, and the fan blade has larger output torque force under the same volume relative to other structures, and the heat dissipation fan blade and the fixed magnet are combined into a whole to reduce the volume of the motor; meanwhile, the rotating shaft is rotationally fixed in the cavities of the motor bracket and the stator assembly through the front bearing and the rear bearing, the rotation is stable, the radius is small, and the motor efficiency is high.

In addition, the design of the annular Hall plate is added, the position of the rotor is sensed at any time during operation, the rotor rotation angle and the speed are controlled, the torque is large and no abnormal sound is produced during starting, and data control stable operation is provided during operation.

Drawings

Fig. 1 is a schematic view of the disassembly of the permanent magnet brushless dc motor dedicated for the juicer according to the present invention;

fig. 2 is a schematic axial section view of the rotating shaft of the permanent magnet brushless dc motor for the middle juicer according to the present invention.

The reference numerals are explained below:

1 is a motor support, 2 is a shell, 3 is a cylinder, 4 is a stator component, 5 is a lead wire, 6 is a rotor component, 7 is an annular hall plate, 601 is a rotating shaft, 602 is a front bearing, 603 is a rear bearing, 604 is a magnet group, 605 is a fan blade, 606 is a snap ring, 607 is a wave washer, 401 is a stator core, and 402 is a coil.

Detailed Description

The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

The embodiments of the present disclosure are described below with specific examples, and other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure in the specification. It is to be understood that the embodiments described are only a few embodiments of the present disclosure, and not all embodiments. The disclosure may be embodied or carried out in various other specific embodiments, and various modifications and changes may be made in the details within the description without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

In order to reduce the motor volume, improve motor efficiency, the utility model discloses specific content is as follows show.

With reference to fig. 1 and 2, an embodiment of the present invention is a permanent magnet brushless dc motor for a juicer, including a motor support 1, a housing 2 fixed on the motor support 1 and forming an assembly accommodating cavity therewith, a circular hole arranged at the center of the motor support 1 and upwardly protruding cylinder 3, a stator assembly 4 fixedly arranged outside the cylinder 3 and located in the assembly accommodating cavity, the stator assembly 4 electrically connected to an external power source through a lead 5, and controlled by the lead 5 to be powered on to control the operation of the motor, and a rotor assembly 6 rotatably and fixedly arranged through the center of the cylinder 3;

importantly, the rotor assembly 6 comprises a rotating shaft 601, a front bearing 602, a rear bearing 603, a magnet group 604, a fan blade 605 and a clamping ring 606, one end of the rotating shaft 601 is rotatably fixed on the inner side of the middle space of the stator assembly 4 through the front bearing 602, and a front bearing 602 fixing space is reserved in an inner ring when the stator assembly 4 is fixed on the cylinder 3;

the other end of the rotating shaft 601 is rotatably fixed in a central circular hole of the motor bracket 1 through a rear bearing 603, and the rotating shaft 601 is supported through the front bearing and the rear bearing, so that the rotating is stable and the radius is small;

the fan blade 605 is a fork-shaped cylinder structure with one closed end, the magnet group 604 is fixed on the fork-shaped cylinder wall of the fan blade 605, the rear part of the fork-shaped cylinder wall of the fan blade 605, which is used for fixing the magnet group 604, covers the outer side of the stator assembly 4 and can induce the electromagnetic field change of the stator assembly 4 to rotate, the center of the closed surface of the fork-shaped cylinder of the fan blade 605 is fixed at the top of one end of the rotating shaft 601 through the snap ring 606, and thus the rotating shaft 601 at the center is driven to rotate when the fan blade 605 rotates, and power is output;

the magnet group 604 is fixed on the fork-shaped cylinder wall of the fan blade 605 and covers the outer side of the stator component 4 to drive the rotating shaft 601 to rotate, and the fan blade device with heat dissipation is not needed to be additionally arranged at the rear end of the motor, the fan blade 605 has both the heat dissipation function and the magnet fixing function, and an outer rotor structure is adopted, so that the fan blade device with heat dissipation has larger output torque force under the same volume relative to other structures, and the heat dissipation fan blade 605 and the magnet fixing function are combined into a whole to reduce the volume of the motor; meanwhile, the rotating shaft 601 is rotationally fixed in the cavities of the motor bracket 1 and the stator assembly 4 through the front bearing and the rear bearing, so that the rotating is stable, the radius is small, and the motor efficiency is high.

A wave gasket 607 is further arranged between the rear bearing 603 of the rotating shaft 601 fixed at the central circular hole of the motor support 1 and the motor support 1, so that the play of the rotating shaft 601 is reduced in the axial direction, and meanwhile, the wave gasket 607 pre-loads the bearing in the axial direction, thereby improving the rigidity of the bearing, compensating the expansion and elongation of the rotor caused by temperature rise and preventing the motor from being locked.

The further design is that an annular Hall plate 7 is fixedly arranged between the shell 2 and the motor support 1, the position of the annular Hall plate is over against the magnet group 604, the position of the rotor is sensed at the moment during operation, the rotor rotation angle and the speed are controlled, the torque is large and no abnormal sound is produced during starting, and the stable operation of data control is provided during operation.

Specifically, the stator assembly 4 includes a stator core 401 and a coil 402 wound around the stator core, the coil 402 is electrically connected to an external power source through a lead 5, and the stator assembly 4 can be controlled by the power on condition of the lead 5 to control the operation of the motor.

The above description is for illustrative purposes only and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. that do not depart from the spirit and principles of the present invention should be construed as within the scope of the present invention.

Claims (4)

1. The utility model provides a special permanent magnetism DC brushless motor of fruit juice mixer, includes the motor support, fixes shell on the motor support and forms the subassembly with it and holds the chamber, and motor support center sets up the round hole and upwards sets up the protrusion drum, the drum outside is fixed to be provided with stator module and to be located the subassembly and hold the intracavity, stator module is connected through lead wire and external power source electricity, passes the rotatable fixed rotor subassembly that is provided with in drum center, its characterized in that: the rotor assembly comprises a rotating shaft, a front bearing, a rear bearing, a magnet group, a fan blade and a clamping ring, wherein one end of the rotating shaft is rotatably fixed on the inner side of the middle space of the stator assembly through the front bearing, and the other end of the rotating shaft is rotatably fixed in a central circular hole of the motor bracket through the rear bearing; the fan blade is a fork-shaped cylinder structure with one closed end, the magnet group is fixed on the wall of the fan blade fork-shaped cylinder, the rear cover of the fixed magnet group on the wall of the fan blade fork-shaped cylinder covers the outer side of the stator component, and the center of the closed surface of the fan blade fork-shaped cylinder is fixed at the top of one end of the rotating shaft through a clamping ring.

2. The permanent magnet brushless dc motor for juicer according to claim 1, wherein: and a wave gasket is also arranged between the rear bearing of the rotating shaft fixed at the central circular hole of the motor support and the motor support.

3. The permanent magnet brushless dc motor for juicer according to claim 1, wherein: an annular Hall plate is fixedly arranged between the shell and the motor support, and the position of the annular Hall plate is opposite to the magnet group.

4. The permanent magnet brushless dc motor for juicer according to claim 1, wherein: the stator assembly comprises a stator core and a coil wound on the stator core, and the coil is electrically connected with an external power supply through a lead.

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