阅读说明：本技术 一种双向磁悬浮有刷电机装置 (Bidirectional magnetic suspension brush motor device ) 是由 罗东胜 晏木 于 2020-06-19 设计创作，主要内容包括：本发明公开了一种双向磁悬浮有刷电机装置,包括电机外壳、电机轴枝和端盖,所述端盖设置于电机外壳底端,所述电机外壳和端盖的轴心处均开设有轴孔,所述电机轴枝设置在两个轴孔之间,且电机轴枝与电机外壳和端盖的连接处均设有轴承,所述电机轴枝远离端盖的一端延伸出电机外壳,且电机轴枝顶端设有传动连接轴。本发明通过依靠电磁效应实现运动的传递,不再需要安装扭力杆等弹性结构,一方面避免了弹性结构在使用时易损坏使得电机的使用寿命较短的情况,另一方面使得单位体积的电机可以传递更大数值的扭矩,利用换向器和电刷针的组合提供传播媒介,将外电路电流引入到转子线圈绕组产生磁场,工作稳定性较高。(The invention discloses a bidirectional magnetic suspension brush motor device which comprises a motor shell, a motor shaft branch and an end cover, wherein the end cover is arranged at the bottom end of the motor shell, shaft holes are formed in the axle centers of the motor shell and the end cover, the motor shaft branch is arranged between the two shaft holes, bearings are arranged at the connecting positions of the motor shaft branch, the motor shell and the end cover, one end, far away from the end cover, of the motor shaft branch extends out of the motor shell, and a transmission connecting shaft is arranged at the top end of the motor shaft branch. The invention realizes the transmission of motion by depending on the electromagnetic effect, does not need to install elastic structures such as a torsion bar and the like, avoids the condition that the service life of the motor is shorter because the elastic structures are easy to damage when in use, and enables the motor with unit volume to transmit torque with larger numerical value.)

1. The utility model provides a two-way magnetic suspension brush motor device, includes motor housing (1), motor axle branch (2) and end cover (3), its characterized in that: the end cover (3) is arranged at the bottom end of the motor shell (1), shaft holes are formed in the shaft centers of the motor shell (1) and the end cover (3), the motor shaft branch (2) is arranged between the two shaft holes, bearings (4) are arranged at the joints of the motor shaft branch (2), the motor shell (1) and the end cover (3), one end, far away from the end cover (3), of the motor shaft branch (2) extends out of the motor shell (1), a transmission connecting shaft (5) is arranged at the top end of the motor shaft branch (2), an insulating protective shell (6) is arranged on one side, far away from the motor shell (1), of the end cover (3), a commutator (7) is sleeved on the outer side of the bottom of the motor shaft branch (2), two brush needles (8) which are symmetrically distributed are arranged on two sides of the bottom of the commutator (7), the cross section of each brush needle (8) is L-shaped, and the top end and the bottom end of each brush needle (8) are, a transmission unit is arranged in the motor shell (1), the transmission unit is composed of a stator component (9) and a rotor component (10), and the rotor component (10) is arranged in the stator component (9);

the stator assembly (9) comprises a stator framework (11) and magnetic steel (12), wherein both sides of the stator framework (11) are provided with placing grooves (13), the magnetic steel (12) is arranged in the placing grooves (13), and both sides of the inner wall of the stator framework (11) are provided with limiting frames (14);

the rotor assembly (10) comprises a rotor core (15) and a coil winding (16), the rotor core (15) is arranged on the outer side of the motor shaft branch (2) in a laminated mode, the rotor core (15) is composed of rotor teeth (151) and pole shoes (152), the rotor teeth (151) and the pole shoes (152) are integrally arranged, and the coil winding (16) is wound on the outer side of the rotor teeth (151);

the quantity of standing groove (13) sets up to four, four standing groove (13) is about rotor core (15) bisector symmetric distribution, four interval angle inequality between standing groove (13), four magnet steel (12) highly staggered distribute, and two adjacent magnet steel (12) highly inequality, magnet steel (12) and rotor core (15) have formed from inhaling face (121) and non-from inhaling face (122), and are greater than the non-from inhaling face (122) area from inhaling face (121) area.

2. The bidirectional magnetic suspension brush motor device according to claim 1, characterized in that: the motor shaft branch (2) and the transmission connecting shaft (5) are coaxially arranged, an inserting groove is formed in the bottom end of the transmission connecting shaft (5), the top end of the motor shaft branch (2) is arranged inside the inserting groove, and the motor shaft branch (2) is in transmission connection with the transmission connecting shaft (5).

3. The bidirectional magnetic suspension brush motor device according to claim 1, characterized in that: the number of the transmission units is set to be one or more, and the mentioned preset values of a plurality of the transmission units are set to be one or more.

4. The bidirectional magnetic suspension brush motor device according to claim 1, characterized in that: the cross-sectional shape of motor housing (1) sets up to flat or circular, end cover (3) and stator skeleton (11) all with motor housing (1) interior profile phase-match, and the riveting is connected between end cover (3) and motor housing (1), rotor core (15) and stator skeleton (11) inner wall phase-match.

5. The bidirectional magnetic suspension brush motor device according to claim 1, characterized in that: coil winding (16) are the same in the wire winding direction on rotor tooth (151), two through coil tap electric connection, four between the drive unit coil winding (16) tap line sets up to coil one (161), coil two (162), coil three (163) and coil four (164) respectively, the tail of coil two (162) of coil one (161), the tail of coil four (164) of coil three (163), the head of coil two (162) and the head of coil four (164) are connected in commutator (7) one side, commutator (7) top both sides all are equipped with the ear, the tail of coil one (161) and the tail of coil three (163) are connected on the ear of commutator (7).

6. The bidirectional magnetic suspension brush motor device according to claim 1, characterized in that: and coil windings of the coil winding (16) are respectively arranged into an upper winding, a lower winding and a left winding and a right winding, the magnetic fields of the upper winding and the lower winding are the same after the upper winding and the lower winding are electrified, and the magnetic fields of the left winding and the right winding are opposite after the left winding and the right winding are electrified.

7. The bidirectional magnetic suspension brush motor device according to claim 1, characterized in that: four magnet steel (12) divide into two sets ofly among the drive unit, and the quantity of every group magnet steel (12) all sets up to two, and two magnet steel (12) polarity in every group are opposite, and the magnetic pole corresponds the same about two sets of magnet steel (12).

8. The bidirectional magnetic suspension brush motor device according to claim 1, characterized in that: the electric brush needle (8) is electrically connected with an external power supply, and the electric brush needle (8) is electrically connected with the coil winding (16) through the commutator (7).

9. The bidirectional magnetic suspension brush motor device according to claim 1, characterized in that: and 3M insulating powder is coated on the surface of the rotor iron core (15).

Technical Field

The invention relates to the technical field of motors, in particular to a bidirectional magnetic suspension brush motor device.

Background

With the continuous improvement of the living standard of people, the electric toothbrush begins to enter the daily life of people, and replaces the traditional toothbrush to realize more ideal and more convenient tooth brushing effect.

The existing electric toothbrush is generally driven by a motor, and the function of cleaning teeth is achieved through the vibration of a toothbrush head. The motor of the existing electric toothbrush generally needs to be provided with a torsion bar of a spring or a similar torsion spring, and the structure is easy to damage and not easy to repair in the using process, so the service life of the motor is often determined by how long the structure can be used. And adopt above-mentioned structural design to make the bearing capacity of motor low, the moment of torsion that the motor of unit volume can transmit is less, and the swing amplitude change of motor shaft is great when bearing different loads moreover, and the result of use is also unstable.

In addition, the motion tracks of the existing electric toothbrush generally swing left and right in a radial direction, and an axial telescopic function is not provided, but people can brush teeth in daily life by swinging up and down to clean teeth (radial swing) and moving left and right (axial telescopic) to achieve the aim of all-around cleaning, and the safety protection of the electric toothbrush motor needs to be further enhanced.

Therefore, it is necessary to invent a bidirectional magnetic suspension brush motor device to solve the above problems.

Disclosure of Invention

The invention aims to provide a bidirectional magnetic suspension brush motor device, which realizes motion transmission by means of an electromagnetic effect without installing elastic structures such as a torsion bar and the like, avoids the situation that the service life of the motor is short due to the fact that the elastic structures are easy to damage in use, enables the motor in unit volume to transmit torque with larger numerical value, provides a transmission medium by utilizing the combination of a commutator and an electric brush needle, achieves the aim of omnibearing cleaning and the effect of safety, and solves the defects in the technology.

In order to achieve the above purpose, the invention provides the following technical scheme: a bidirectional magnetic suspension brush motor device comprises a motor shell, a motor shaft branch and an end cover, wherein the end cover is arranged at the bottom end of the motor shell, shaft holes are formed in the shaft centers of the motor shell and the end cover, the motor shaft branch is arranged between the two shaft holes, bearings are arranged at the joints of the motor shaft branch, the motor shell and the end cover, one end, far away from the end cover, of the motor shaft branch extends out of the motor shell, a transmission connecting shaft is arranged at the top end of the motor shaft branch, an insulating protective shell is arranged on one side, far away from the motor shell, of the end cover, the outer side of the bottom of the motor shaft branch is sleeved with a commutator, two brush needles are symmetrically distributed on two sides of the bottom of the commutator, the cross section of each brush needle is L-shaped, the top end and the bottom end of each brush needle are respectively spliced with the commutator and, and the rotor assembly is arranged in the stator assembly;

the stator assembly comprises a stator framework and magnetic steel, wherein both sides of the stator framework are provided with placing grooves, the magnetic steel is arranged in the placing grooves, and both sides of the inner wall of the stator framework are provided with limiting frames;

the rotor assembly comprises a rotor core and a coil winding, the rotor core is arranged on the outer side of the motor shaft in a laminated mode, the rotor core is composed of rotor teeth and pole shoes, the rotor teeth and the pole shoes are integrally arranged, and the coil winding is arranged on the outer side of the rotor teeth in a wound mode;

the quantity of standing groove sets up to four, four the standing groove is about rotor core bisector symmetric distribution, four interval angle inequality between the standing groove, four magnet steel height staggered distribution, and two adjacent magnet steel height vary, magnet steel and rotor core have formed from inhaling the face and not inhaling the face, and are greater than the non-from inhaling the face area.

Preferably, the motor shaft branch and the transmission connecting shaft are coaxially arranged, an insertion groove is formed in the bottom end of the transmission connecting shaft, the top end of the motor shaft branch is arranged inside the insertion groove, and the motor shaft branch is in transmission connection with the transmission connecting shaft.

Preferably, the number of the transmission units is set to be one or more, and the mentioned preset values of a plurality of the transmission units are set to be one or more.

Preferably, the cross section of the motor shell is flat or circular, the end cover and the stator framework are matched with the inner contour of the motor shell, the end cover and the motor shell are connected in a riveting mode, and the rotor core is matched with the inner wall of the stator framework.

Preferably, coil winding is the same on the rotor tooth wire winding direction, two through coil tap electric connection, four between the transmission unit coil winding tap line sets up to coil one, coil two, coil three and coil four respectively, the tail of the head wiring circle two of coil one, the tail of the head wiring circle four of coil three, the head of coil two is connected in commutator one side with the head of coil four, commutator top both sides all are equipped with the ear, the tail of coil one and the tail of coil three are connected on the ear of commutator.

Preferably, the coil windings of the coil winding are respectively provided with an upper winding, a lower winding and a left winding and a right winding, the magnetic fields of the upper winding and the lower winding are the same after being electrified, and the magnetic fields of the left winding and the right winding are opposite after being electrified.

Preferably, four magnet steels divide into two sets ofly among the drive unit, and the quantity of every group magnet steel all sets up to two, and two magnet steels polarity in every group are opposite, and the magnetic pole corresponds the same about two sets of magnet steels.

Preferably, the brush needle is electrically connected with an external power supply, and the brush needle is electrically connected with the coil winding through the commutator.

Preferably, the surface of the rotor core is coated with 3M insulating powder.

In the technical scheme, the invention provides the following technical effects and advantages:

through the transmission that relies on electromagnetic effect to realize the motion, elastic structure such as torsion bar no longer need to install, on the one hand avoided elastic structure fragile when using to make the shorter condition of life of motor, on the other hand makes the motor of unit volume can transmit the moment of torsion of bigger numerical value, utilize the combination of commutator and brush needle to provide the propagation medium, introduce external circuit current to the rotor coil winding and produce magnetic field, job stabilization nature is higher, compared with the prior art, can axial and radial rotation brush teeth simultaneously, the blank that does not have axial concertina movement except the radial horizontal hunting of electric toothbrush on the market has been filled.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is an exploded view of the overall structure of the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a right side view of the present invention;

FIG. 4 is a view showing A-A in FIG. 3 according to the present invention^，A schematic cross-sectional structure;

FIG. 5 is a front view of the present invention;

FIG. 6 is a drawing showing B-B in FIG. 5 according to the present invention^，A schematic cross-sectional structure;

FIG. 7 is a schematic structural view of a rotor core according to the present invention;

FIG. 8 is a schematic view of the internal structure of the motor of the present invention;

FIG. 9 shows a view of C-C in FIG. 8 according to the present invention^，A schematic cross-sectional structure;

FIG. 10 is a view showing D-D in FIG. 8 according to the present invention^，A schematic cross-sectional structure;

FIG. 11 is a front view of a distribution structure of self-priming surfaces and non-self-priming surfaces according to the present invention;

FIG. 12 is a left side view of a distribution structure of self-priming surface and non-self-priming surface according to the present invention;

FIG. 13 is a left side view of a magnetic steel polarity distribution structure according to the present invention;

FIG. 14 is a front view of a magnetic steel polarity distribution structure according to the present invention;

FIG. 15 is a schematic diagram of the magnetic steel distribution structure of the present invention.

Description of reference numerals:

the motor comprises a motor shell 1, a motor shaft branch 2, an end cover 3, a bearing 4, a transmission connecting shaft 5, an insulating protective shell 6, a commutator 7, a brush needle 8, a stator assembly 9, a rotor assembly 10, a stator framework 11, magnetic steel 12, a self-priming surface 121, a non-self-priming surface 122, a placing groove 13, a limit frame 14, a rotor core 15, rotor teeth 151, pole shoes 152, a coil winding 16, a coil I161, a coil II 162, a coil III 163 and a coil IV 164.

Detailed Description

In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.

The invention provides a bidirectional magnetic suspension brush motor device as shown in figures 1-15, which comprises a motor shell 1, a motor shaft branch 2 and an end cover 3, wherein the end cover 3 is arranged at the bottom end of the motor shell 1, shaft holes are respectively formed in the shaft centers of the motor shell 1 and the end cover 3, the motor shaft branch 2 is arranged between the two shaft holes, bearings 4 are respectively arranged at the joints of the motor shaft branch 2, the motor shell 1 and the end cover 3, one end of the motor shaft branch 2, which is far away from the end cover 3, extends out of the motor shell 1, a transmission connecting shaft 5 is arranged at the top end of the motor shaft branch 2, an insulating protective shell 6 is arranged on one side of the end cover 3, which is far away from the motor shell 1, a commutator 7 is sleeved outside the bottom of the motor shaft branch 2, two brush needles 8 which are symmetrically distributed are arranged on two sides of the bottom of the commutator 7, the cross section of each brush needle 8 is L-shaped, a transmission unit is arranged in the motor shell 1, the transmission unit is composed of a stator assembly 9 and a rotor assembly 10, and the rotor assembly 10 is arranged in the stator assembly 9;

the stator assembly 9 comprises a stator framework 11 and magnetic steel 12, wherein both sides of the stator framework 11 are provided with placing grooves 13, the magnetic steel 12 is arranged in the placing grooves 13, and both sides of the inner wall of the stator framework 11 are provided with limiting frames 14;

the rotor assembly 10 comprises a rotor core 15 and a coil winding 16, the rotor core 15 is arranged on the outer side of the motor shaft branch 2 in a laminated mode, the rotor core 15 is composed of a rotor tooth 151 and a pole shoe 152, the rotor tooth 151 and the pole shoe 152 are integrally arranged, and the coil winding 16 is wound on the outer side of the rotor tooth 151;

the number of the placing grooves 13 is four, the four placing grooves 13 are symmetrically distributed about a bisector of the rotor core 15, the spacing angles between the four placing grooves 13 are unequal, the four magnetic steels 12 are distributed in a staggered manner, the heights of the two adjacent magnetic steels 12 are unequal, the magnetic steels 12 and the rotor core 15 form a self-suction surface 121 and a non-self-suction surface 122, and the area of the self-suction surface 121 is larger than that of the non-self-suction surface 122;

the combination of commutator 7 and brush pins 8 provides a medium for the introduction of external circuit current into the rotor coil windings to generate a magnetic field.

Further, in the above technical scheme, the motor shaft 2 and the transmission connecting shaft 5 are coaxially arranged, the bottom end of the transmission connecting shaft 5 is provided with an insertion groove, the top end of the motor shaft 2 is arranged in the insertion groove, and the motor shaft 2 is in transmission connection with the transmission connecting shaft 5, so that on one hand, the processing precision of the shaft is improved, on the other hand, the production efficiency is improved, different customers only need to replace different output shafts, and the motors can be stored, and the standardization is easy.

Further, in the above technical solution, the number of the transmission units is set to be one or more, and the preset values mentioned by a plurality of the transmission units are set to be one or more.

Further, in the above technical solution, the cross-sectional shape of the motor housing 1 is flat or circular, the end cover 3 and the stator frame 11 are both matched with the inner contour of the motor housing 1, the end cover 3 and the motor housing 1 are riveted, the rotor core 15 is matched with the inner wall of the stator frame 11, the insulating protective shell 6 can protect the brush pins 8 from deformation, the wire is covered after welding, and then the connecting wire is led out, thereby achieving the purpose of insulation.

Further, in the above technical solution, the winding directions of the coil windings 16 on the rotor teeth 151 are the same, two of the transmission units are electrically connected through coil taps, four tapped wires of the coil windings 16 are respectively set as a first coil 161, a second coil 162, a third coil 163 and a fourth coil 164, a head of the first coil 161 is connected with a tail of the second coil 162, a head of the third coil 163 is connected with a tail of the fourth coil 164, a head of the second coil 162 and a head of the fourth coil 164 are connected to one side of the commutator 7, lugs are arranged on two sides of the top end of the commutator 7, and a tail of the first coil 161 and a tail of the third coil 163 are connected to a lug of the commutator 7.

Further, in the above technical solution, the coil windings of the coil winding 16 are respectively set as an upper winding, a lower winding and a left winding, the upper winding and the lower winding have the same magnetic field after being electrified, and the left winding and the right winding have opposite magnetic fields after being electrified.

Further, in the above technical scheme, four magnetic steels 12 in the transmission unit are divided into two groups, the number of each group of magnetic steels 12 is two, the two magnetic steels 12 in each group have opposite polarities, and the upper and lower magnetic poles of the two groups of magnetic steels 12 are correspondingly the same;

in the radial direction, the rotor teeth absorb the magnetic steel, and the self-absorption surface has larger area than the non-self-absorption surface, so the radial direction can be suspended; in the axial direction, the rotor iron wicks the magnetic steel, and the self-suction surface has larger area than the non-self-suction surface, so the rotor iron can suspend in the axial direction; in the radial direction, even if the rotor deflects to the maximum position angle, the area of the self-suction surface is still larger than that of the non-self-suction surface; in the axial direction, the area of the self-suction surface is still larger than the non-self-suction surface even if the rotor is axially displaced to the maximum position.

Further, in the above technical solution, the brush pins 8 are electrically connected to an external power source, and the brush pins 8 are electrically connected to the coil winding 16 through the commutator 7.

Further, in the above technical solution, 3M insulating powder is coated on the surface of the rotor core 15, and plays an insulating role between the coil winding 16 and the rotor core 15.

Motor housing 1 bottom is sealed through the riveting of end cover 3, and the 6 insulation protection of the insulating protective housing of cooperation, use bearing 4 relative stator module 9 to constitute two-way magnetic suspension motor structure, make motor shaft branch 2's rotation more smooth and easy, avoid motor shaft branch 2's wearing and tearing, also can stabilize motor shaft branch 2's position simultaneously, and simultaneously, a pair of bearing 4 can make motor shaft branch 2 around both ends atress more even, and the installation is stable, for motor shaft branch 2 provides the supported position on the one hand, make things convenient for stator module 9 and rotor subassembly 10's compact installation, the stable cooperation, on the other hand also can protect inside stator module 9 and rotor subassembly 10 as few as possible the pollution and the influence that receive external environment, guarantee motor shaft branch 2 continuous stable power transmission.