CN211127518U - Motor bracket for mounting permanent magnet and coil, magnetic suspension sound wave motor and oral cavity cleaning appliance - Google Patents

Abstract

The utility model provides a motor support, magnetic suspension sound wave motor and oral cavity cleaning device of installation permanent magnet and coil, wherein, in the motor support of installation permanent magnet and coil, be equipped with permanent magnet installation department and coil winding portion on the motor support, the permanent magnet installation department with be equipped with the swing clearance between the coil winding portion, still be equipped with iron core accommodation portion on the motor support, iron core accommodation portion with be equipped with the opening between the swing clearance to make, the iron core can via the opening stretches out to the swing clearance. Use the utility model discloses a motor support makes motor, when guaranteeing the miniaturization, can let the iron core have bigger swing angle, provides bigger amplitude for magnetic suspension sound wave motor.

Description

Motor bracket for mounting permanent magnet and coil, magnetic suspension sound wave motor and oral cavity cleaning appliance

Technical Field

The utility model relates to a micro motor makes and oral cavity cleaning appliance field especially relates to motor support, magnetic suspension sound wave motor and oral cavity cleaning appliance of installation permanent magnet and coil.

Background

In recent years, with the improvement of consumption level, popularization of oral care knowledge and continuous enrichment of product types and functions, the electric toothbrush becomes one of the most rapidly growing small household appliances in China. The electric toothbrush drives the toothbrush head to swing left and right at a high speed by utilizing the high-speed motion of the micro motor to generate mechanical vibration, and the vibration frequency of the electric toothbrush is consistent with or close to the sound wave frequency so as to achieve the super-strong cleaning effect. Since the electric toothbrush is mainly driven by the micro motor to realize cleaning, the performance of the micro motor is one of the important factors determining the performance of the electric toothbrush.

To satisfy consumers' different oral health conditions and habits, electric toothbrushes typically have multiple modes of use, some requiring wider amplitude to fully cover the tooth surfaces for efficient cleaning, which requires wider amplitude to be provided by the electric motor of the electric toothbrush. On the other hand, when the electric toothbrush is purchased, the electric toothbrush is not portable enough due to the overlarge volume, and is demanded by many users due to the exquisite and small size, so that the motor of the electric toothbrush is required to be miniaturized. Therefore, there is a need in the market for a motor that is compact and at the same time can provide a wide amplitude.

Meanwhile, the structure of the existing micro motor is complex, the performance is unstable, the connection quality between the rotor assembly and the stator assembly is low, the consistency and the reliability are poor, the electric toothbrush cannot be normally used due to the fact that faults occur easily, meanwhile, the assembly is complex, and the assembly production efficiency of the motor is low. Therefore, the present invention has been developed in such a background.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that exists among the prior art, on the one hand, provide a motor support of installation permanent magnet and coil, on the other hand, provide a magnetic suspension sound wave motor, on the one hand, provide an oral cleaning utensil.

In order to solve the above problem, on the one hand, the utility model discloses a technical scheme be:

the motor support of installation permanent magnet and coil, be equipped with permanent magnet installation department and coil winding portion on the motor support, the permanent magnet installation department with be equipped with the swing clearance between the coil winding portion, still be equipped with the iron core portion of holding that is used for wearing to establish the axostylus axostyle on the motor support, the iron core portion of holding with be equipped with the opening between the swing clearance to the messenger, the iron core of rotor can via the opening stretches out extremely the swing clearance.

Preferably, still be equipped with the axostylus axostyle portion of holding that is used for wearing to establish the axostylus axostyle on the motor support, coil winding portion is including setting up the permanent magnet installation department with a pair of support lateral wall that is used for the winding coil between the axostylus axostyle portion of holding, wherein arbitrary support lateral wall is the V-arrangement and opens.

Preferably, the motor mount includes: the first frame is provided with a first penetrating part; the second frame is provided with a second penetrating part; the first frame and the second frame are connected with each other, so that the first penetrating portion and the second penetrating portion can be used for penetrating the shaft rod, one part of the first frame and one part of the second frame jointly form the permanent magnet installation portion, and the other part of the first frame and the other part of the second frame jointly form the coil winding portion; when the first frame and the second frame are relatively far away, the permanent magnet mounting part is enlarged so as to mount and dismount the permanent magnet; when the first frame and the second frame are relatively close, the permanent magnet mounting portion is reduced so as to fasten the permanent magnet.

Preferably, the permanent magnet mounting part comprises four first sinking grooves arranged on the first frame, and the four first sinking grooves are annularly arranged relative to the axis of the shaft rod; the permanent magnet mounting part also comprises four second sinking grooves arranged on the second frame, and the four second sinking grooves are annularly arranged relative to the axis of the shaft rod; any one first sinking groove on the first frame is matched with one second sinking groove on the second frame, and the matched first sinking groove and the matched second sinking groove are arranged along the direction parallel to the axis of the shaft rod.

Preferably, the included angle C of the opening of the V-shaped supporting side wall is more than or equal to 90 degrees and less than 180 degrees.

Preferably, the first frame comprises a first bottom plate, the first bottom plate is provided with two first fan-shaped notches which are symmetrically arranged relative to the axis of the shaft lever, four first sinking grooves which are symmetrically arranged relative to the axis of the shaft lever are arranged on the same side of the first bottom plate, the supporting side walls comprise two first side walls which are arranged on the first bottom plate and extend along the axis direction of the shaft lever on one side of the first sinking grooves in a spaced manner, and the upper ends of the two first side walls are both provided with inserting pins; the second frame comprises a second bottom plate, the second bottom plate is provided with two second fan-shaped notches which are symmetrically arranged relative to the axis of the shaft lever, four second sinking grooves which are symmetrically arranged relative to the axis are formed in the same side of the second bottom plate, the supporting side wall comprises two second side walls which are positioned on one side of the second sinking grooves on the second bottom plate, extend along the axis direction of the shaft lever and are arranged in a spaced mode, and connecting holes for inserting the inserting pins are formed in the upper ends of the two second side walls; the first penetrating part is arranged on the first bottom plate, and the second penetrating part is arranged on the second bottom plate; the first sinking groove is matched with the second sinking groove to form the permanent magnet mounting part; the first and second side walls and the first and second bottom plates form the coil wound portion. The included angle C of the opening of the V-shaped supporting side wall is more than or equal to 90 degrees and less than 180 degrees.

Preferably, a first convex column is arranged on the other side of the first bottom plate opposite to the first sinking groove; and a second convex column is arranged on the other side of the second bottom plate opposite to the second sinking groove.

On the other hand, a magnetic suspension sound wave motor is provided, which comprises a motor bracket provided with a permanent magnet and a coil in any one of the schemes, wherein the motor bracket is provided with the coil and the permanent magnet, and also comprises an iron core, a shaft rod, a bearing and a shell, wherein the iron core is fixedly arranged on the shaft rod; the shaft rod penetrates through the first penetrating part and the second penetrating part and is fixedly connected with the shell through a bearing.

Preferably, the iron core is the I-shaped iron core, the iron core middle part is equipped with the axostylus axostyle connecting hole and passes in order to supply the axostylus axostyle, the iron core still includes the support wall that is located axostylus axostyle connecting hole both sides and is a style of calligraphy symmetrical arrangement, the end connection of support wall has the drive wing.

In still another aspect, an oral cleaning implement is provided, which is equipped with the aforementioned magnetically levitated acoustic wave motor.

The utility model discloses an installation permanent magnet and coil's motor support, last permanent magnet installation department and the coil winding portion of being equipped with of motor support, the permanent magnet installation department with be equipped with the swing clearance between the coil winding portion, still be equipped with iron core accommodation portion on the motor support, iron core accommodation portion with be equipped with the opening between the swing clearance to the messenger, the iron core of rotor can via the opening stretch out to the swing clearance. The utility model discloses in, it is bigger relatively to supply the winding area of coil, consequently can produce bigger magnetic force under the on state and rotate with the drive iron core. Second, since the stroke space provided to the rotor core, which penetrates through to the permanent magnet mounting part, is provided, a larger swing space is provided for the rotor core, thereby improving the amplitude of the rotor. Under the condition of guaranteeing high power and large amplitude, the utility model discloses still have the advantage that the noise is little. When the motor bracket is assembled to form a motor product and the motor having the motor bracket structure is applied to the oral cleaning appliance, naturally, the above-mentioned advantageous effects are also provided.

Drawings

The present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a perspective view of a motor bracket viewed from one direction.

Fig. 2 is one of the exploded structural views of the motor bracket.

Fig. 3 is a second schematic diagram of the exploded structure of the motor bracket.

Fig. 4 is a top view of a first one of the motor mounts.

Fig. 5 is a bottom view of the second one of the motor brackets.

Fig. 6 is a schematic perspective view of the electrode holder after winding a coil and mounting a permanent magnet.

Fig. 7 is a perspective view of the internal structure of the magnetic levitation sound wave motor with the housing and the base hidden.

FIG. 8 is a perspective view of the internal structure of the magnetic levitation sound wave motor with the casing hidden

Fig. 9 is a schematic perspective view of a magnetic levitation acoustic wave motor.

Fig. 10 is an exploded view of a magnetically levitated acoustic wave motor.

Fig. 11 is an axial sectional structural schematic diagram of a magnetic levitation acoustic wave motor.

Fig. 12 is a radial section structure schematic diagram of a magnetic levitation acoustic wave motor.

Fig. 13 is one of the schematic operating principles of the magnetic levitation acoustic wave motor.

Fig. 14 is a second schematic diagram of the operation principle of the magnetic levitation acoustic wave motor.

Fig. 15 is a third schematic diagram of the operation principle of the magnetic levitation acoustic wave motor.

In the figure, 10, a motor bracket; 11. a plug pin; 12. connecting holes; 13. a fan-shaped opening; 20. a coil; 30. a permanent magnet; 40. an iron core; 50. a shaft lever; 60. an upper bearing; 70. a lower bearing; 80. an upper cover; 90. a base; 100. a cavity; 801. mounting holes; 901. a bearing bore; 902. an annular step; 903. a boss portion; 101. a first frame; 102. a second frame; 1012. a first penetration portion; 1021. a second penetration portion; 401. a shaft lever connecting hole; 402. a support wall; 403. a drive wing; 4031. a circular arc surface; 1011. a first base plate; 1013. a first fan annular gap; 1014. a first sink tank; 1015. a first side wall; 1016. a first baffle plate; 1022. a second base plate; 1023. a second fan annular gap; 1024. a second sink tank; 1025. a second side wall; 1026. a second baffle; 1066. a swing gap; 1017. a first convex column; 1027. a second convex column.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present invention, the first feature is different from the second feature unless explicitly stated or limited otherwise

"on" or "under" may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 to 12, a magnetic levitation sound wave motor is shown, which includes a motor support 10, a coil 20 and a permanent magnet 30 mounted on the motor support 10, and further includes an iron core 40, a shaft 50, a bearing and a housing, wherein the iron core 40 is fixedly mounted on the shaft 50. Specifically, the bearing includes an upper bearing 60 and a lower bearing 70, and the housing includes an upper cover 80 and a base 90. The motor bracket 10 is accommodated in the cavity 100 between the upper cover 80 and the base 90, the upper cover 80 is provided with a mounting hole 801, an outer ring of the upper bearing 60 is matched with the mounting hole 801, an inner ring of the upper bearing 60 is in interference fit with the shaft rod 50, the base 90 is provided with a bearing hole 901, the lower bearing 70 is installed in the bearing hole 901 through the outer ring of the lower bearing 70, the inner ring of the lower bearing 70 is in interference fit with the shaft rod 50, and the inner ring and the outer ring of the bearing can rotate relatively, so that the shaft rod 50 can move relative to the housing.

The utility model discloses in, fix the iron core on the axostylus axostyle, the axostylus axostyle is worn to establish in motor support, forms iron core accommodation portion and axostylus axostyle accommodation portion on the motor support 10, forms the space of installation iron core and axostylus axostyle on the motor support promptly, can know according to the theory of operation of motor, and after the iron core was driven, the axostylus axostyle followed the rotation, as long as can realize this function can, therefore the restriction is not done to the concrete shape of iron.

In order to connect the upper cover 80 and the base 90, an annular step 902 and a protrusion 903 are provided on the base 90, when the base 90 is assembled with the upper cover 80, the protrusion 903 is inserted into the upper cover 80, and the sidewall of the upper cover 80 abuts against the step 902. A hole or a gap (not shown) through which the coil 20 passes is provided in the base 90 in order to supply power to the coil 20.

Referring to fig. 1-3, the motor bracket 10 includes a first frame 101 and a second frame 102, which are separately manufactured and assembled to be coupled together. A first penetrating part 1012 is arranged on the first frame 101; the second frame 102 is provided with a second penetrating portion 1021, specifically, as a preferred embodiment, the first penetrating portion and the second penetrating portion are through holes, when the first frame and the second frame are assembled, the first penetrating portion 1012 and the second penetrating portion 1021 are coaxial, so as to be able to penetrate the shaft rod 50 as a rotor component, it should be noted that the aperture of the first penetrating portion 1012 and the second penetrating portion 1021 is larger than the outer diameter of the corresponding position of the shaft rod, so that the motor support 10 as a stator component is not in contact with the shaft rod 50, so that the shaft rod 50 swings and does not generate friction with the motor support 10 to cause energy loss. In order to enable the shaft rod 50 to be driven, the iron core 40 is fixedly connected to the shaft rod 50, as a preferred embodiment, in this embodiment, the iron core 40 is an i-shaped iron core, a shaft rod connecting hole 401 is formed in the middle of the iron core to allow the shaft rod 50 to pass through, the iron core 40 further includes support walls 402 located on two sides of the shaft rod connecting hole 401 and symmetrically arranged in a straight line, a driving wing 403 is connected to an end of the support wall 402, an arc surface 4031 is formed on the driving wing 403, the arc surface 4031 forms a stress surface, and when the arc surface 4031 is stressed, the iron core can be driven to rotate, so the iron core 40 and the shaft rod 50 form a rotor of. The utility model discloses in, need not to set up the coil on the iron core 40, it is through being located outside coil excitation, and after the coil circular telegram, through the electric field production magnetic field that changes, the both ends of iron core 40 form the N utmost point and the S utmost point correspondingly.

The motor mount 10 is further described below for mounting the coil 20 and the permanent magnet 30. The first frame 101 includes a first base plate 1011, the first penetrating portion 1012 is disposed on the first base plate 1011, the first base plate 1011 is provided with two first annular notches 1013 symmetrically arranged with respect to an axis of the first penetrating portion 1012, four first sinking grooves 1014 symmetrically arranged with respect to the axis of the first penetrating portion 1012 are disposed on the same side of the first base plate 1011, two first side walls 1015 extending along the axis direction of the first penetrating portion 1012 and spaced apart from each other are disposed on one side of the first sinking grooves 1014 on the first base plate 1011, the upper ends of the two first side walls 1015 are both provided with an inserting pin 11 protruding along the axis direction of the first penetrating portion 1012, and the two first side walls 1015 disposed below the inserting pin 11 are both provided with a first baffle 1016; the second frame 102 includes a second bottom plate 1022, the second penetrating portion 1021 is disposed on the second bottom plate 1022, the second bottom plate 1022 is provided with two second fan-shaped notches 1023 symmetrically arranged relative to an axis of the second penetrating portion 1021, four second sinking grooves 1024 symmetrically arranged relative to the axis of the second penetrating portion 1021 are disposed on the same side of the second bottom plate 1022, two second side walls 1025 extending along the axis direction of the second penetrating portion 1021 and spaced apart from each other are disposed on one side of the second sinking grooves 1024 on the second bottom plate 1022, a connection hole 12 for inserting the plug pin 11 is disposed at an upper end of each of the two second side walls 1025, and a second blocking plate 1026 is disposed on each of the two second side walls 1025 above the connection hole 12; the first frame 101 and the second frame 102 can be connected with the connection hole 12 through the insertion pin 11. As a preferred embodiment, the insertion pin 11 and the connection hole 12 may be eliminated, and the first frame 101 and the second frame 102 may be connected together by ultrasonic or glue. The first sinking groove 1014 is matched with the second sinking groove 1024 to form a permanent magnet mounting part for clamping the permanent magnet 30; in a preferred embodiment, the permanent magnet 30 is a bar magnet, one end of the bar magnet is clamped in the first sinking groove 1014, and the other end of the bar magnet is clamped in the second sinking groove 1024, and the first frame 101 and the second frame 102 are designed separately, so that there is no fear of the bar magnet being unable to be assembled due to machining errors. In the embodiment, the number of the bar magnets is 4, the installation modes are the same, and two bar magnets which are close to each other form a group, so that two groups of permanent magnets are formed on the motor bracket 10; it should be noted that, in any group of permanent magnets, the polarities of one ends of the two bar magnets on the same side are opposite, in two groups of permanent magnets, the arrangement mode of one group of permanent magnets on one side of the motor bracket is the same as that of the other group of permanent magnets on the other side of the motor bracket, and the two groups of permanent magnets are symmetrically arranged relative to the axis of the iron core 40, so that when the coil 20 is not energized, the two groups of permanent magnets and the iron core are symmetrically arranged relative to the axis of the iron core 40.

In order to enable the swinging of the core 40, the gap between the two first side walls 1015 and the gap between the two second side walls 1025 form part of the core stroke space; specifically, the shape of the gap between the two first side walls 1015 matches the shape of the gap between the two second side walls 1025, each having a fan-shaped annular opening 13 facing the permanent magnet mounting portion. Outside the fan-shaped opening 13, a swing gap 1066 is provided between the end of each of the first side wall 1015 and the second side wall 1025 and the corresponding permanent magnet, the driving wing 403 of the iron core 40 can extend out of the fan-shaped opening 13, when the iron core 40 swings, the driving wing 403 can swing back and forth through the swing gap 1066, specifically, both ends of the swing gap 1066 are through, after the permanent magnet is installed, the first side wall and the second side wall are not in contact with the permanent magnet, as shown in fig. 12 and 13, so that the driving wing on the iron core 40 can extend out of the swing gap 1066, thereby increasing the swing amplitude of the iron core and achieving the purpose of increasing the amplitude. The fan-shaped openings 13 include two fan-shaped openings, and the two fan-shaped openings are symmetrically arranged at 180 degrees relative to the axis of the first penetrating portion.

Referring to fig. 6, the first side wall and the second side wall form a supporting side wall, the supporting side wall and the first bottom plate and the second bottom plate form the coil winding portion, and the first side wall and the second side wall are both opened in a V shape. Specifically, the coil 20 can be wound on the motor frame 10 through two first fan-shaped notches 1013 on the first base plate, two second fan-shaped notches 1023 on the second base plate, and the first side wall 1015 connected with the first fan-shaped notches 1013, and the second side wall 1025 connected with the second fan-shaped notches 1023. Because the utility model provides a bar magnet has two sets ofly, consequently in order to match, the interval of the first baffle 1016 of accessible and second baffle 1026, the coil coiling becomes two sets ofly, is located the both sides of first baffle 1016 and second baffle 1026 respectively.

When the central angles of the two first fan-shaped notches 1013 on the first base plate and the two second fan-shaped notches 1023 on the second base plate are smaller, the larger the fan-shaped openings 13 on the first base plate and the second base plate are, the larger the swing space provided for the iron core 40 is, and thus the larger the amplitude of the iron core 40 is; on the contrary, when the central angle of the two first fan-shaped notches 1013 on the first base plate and the two second fan-shaped notches 1023 on the second base plate is larger, the smaller the fan-shaped openings 13 on the first base plate and the second base plate, the smaller the swing space provided to the iron core 40, and thus the iron core 40 has a smaller amplitude. In the present invention, as a preferred embodiment, the central angle of the two first annular indentations 1013 on the first base plate and the two second annular indentations 1023 on the second base plate is 129 degrees.

In the utility model, as other preferred embodiments, the range of the included angle C of the V-shaped opened first side wall is more than or equal to 100 degrees and less than 160 degrees, or more than or equal to 120 degrees and less than 140 degrees.

The utility model discloses in, first lateral wall reaches all be equipped with the concave surface on the second lateral wall, this concave surface is used for matcing two first fan annular breach 1013 on the first bottom plate and two second fan annular breach 1023 on the second bottom plate, like this, when the coil was twined, can distribute on the concave surface, the concave surface can twine more coils.

In the present invention, a first protrusion 1017 is disposed on the other side of the first bottom plate 1011 opposite to the first sinking groove 1014, and the first penetrating portion 1012 passes through the first protrusion 1017; a second protruding pillar 1027 is disposed on the other side of the second bottom plate 1022 opposite to the second sinking groove 1024, and the second penetrating portion 1021 passes through the second protruding pillar 1027. It should be noted that the first protrusion 1017 and the second protrusion 1027 are made of insulating materials. As preferred mode, installing support one end is fixed at the upper cover, and the other end is fixed on the base to the restriction installing support's axial motion can be that the upper cover and base inner wall establish the sand grip, thereby offset with the bottom plate of installing support, or other designs. The main effect of projection is for avoiding the axostylus axostyle to touch and/or damage the enameled wire, prevents that the short circuit from leading to the motor to scrap, and with the integrative injection moulding of motor support, need not extra insulating part, simplifies motor structure. As a preferred embodiment, the first and second blocking plates 1016 and 1026 of the motor bracket 10 can be eliminated, and since the bar magnets of the present invention have two sets, the coils can be wound into two sets for matching through the interval between the first and second protruding columns 1017 and 1027, and the two sets are respectively located at two sides of the first and second blocking plates 1016 and 1026.

Referring to fig. 13-15, the working principle of the present invention is that, in the non-energized state, the attraction force of each permanent magnet to the iron core is equal, so that the iron core and the shaft rod stay at the initial position. When the permanent magnet type axial flow motor is used, the direction of the coil is changed alternately, the coil is electrified, the two end parts of the coil generate an N pole and an S pole, the N pole and the S pole act on the iron core, the iron core leaves the central position under the action of the permanent magnet, and clockwise or counterclockwise rotation is generated, so that the shaft rod continuously swings.

It should be noted that, the utility model provides an iron core passes through the bearing installation back with the axostylus axostyle, all not contact with motor support, axostylus axostyle and upper bearing and lower bearing contact, and the iron core can not contact and support the lateral wall.

The utility model provides a magnetic suspension sound wave motor, simple structure, assembly are simple and convenient, the stable performance, connect between rotor subassembly and the stator module of high quality, uniformity and reliability height, can realize wide amplitude in the miniaturization, more accord with the demand in market. The utility model discloses a magnetic suspension sound wave motor need not to set up shell fragment, bullet needle or the position that the axostylus axostyle was fixed to the spring in addition, simplifies motor structure, avoids elastic construction to absorb the moment of torsion of main shaft when the main shaft rotates simultaneously and leads to the output of main shaft to weaken. The iron core can be a silicon steel body and can be formed by overlapping silicon steel sheets.

The utility model discloses in, through first baffle 1016 and second baffle 1026 on the motor support 10 and the planar inner wall looks butt on the upper cover 80 to restriction motor support's radial motion makes to connect between the rotor subassembly and the stator module of motor of high quality, uniformity and reliability height.

The utility model provides a motor support, the structure is firm, can be accurate, install the permanent magnet firmly, the position of each magnet is decided to circumference, increase magnet assembly's shock resistance, be favorable to improving drop test's the percent of pass, the installing support is upper and lower structure, the permanent magnet can be installed earlier on first frame or second frame, peg graft first frame and second frame again, can overcome the difficult problem of equipment because of the permanent magnet tolerance causes, in addition, motor support can make the rotor that is located its inner space have bigger swing space, can realize wide amplitude in the motor miniaturization. The motor support is made of insulating plastic, the first protruding column and the second protruding column are integrally formed in an injection molding mode and arranged on the motor support, an enameled wire can be prevented from being touched and/or damaged by the shaft rod, the motor is prevented from being scrapped due to short circuit, extra insulating parts are not needed, and the motor structure is simplified. In addition, the coil is fixed on the mounting bracket to form a part of the stator assembly, a magnetic field can be generated after direct electrification to drive the rotor to rotate, the rotor is not provided with the coil, current conduction through an electric brush is not needed, the problems of breakage and the like caused by coil friction and repeated quick vibration of the coil are solved, a commutator or a commutator is not needed, the conversion efficiency is high, the rotating speed is high, the performance is better, and the service life of the whole motor is longer.

Of course, the foregoing embodiments are only preferred embodiments of the present invention. It is also possible to realize by other equivalent structures as long as it is ensured that an opening is provided between the core receiving portion and the swing gap so that the core of the rotor can protrude to the swing gap via the opening. For example, the vertical structure of the first frame and the second frame in the present invention is changed to the left-right structure.

In addition, the utility model also provides an oral cleaning appliance, for example electric toothbrush, it is including aforementioned magnetic suspension sound wave motor. During installation, the magnetic suspension sound wave motor is positioned inside the shell of the electric toothbrush, and the shaft lever 50 extends out to be connected with the brush head. Other constructions of electric toothbrushes are known in the art and will not be described in detail herein.

In the description of the specification, reference is made to the terms "one embodiment," "some embodiments," and,

The description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and it is not to be understood that the specific embodiments of the present invention are limited to these descriptions. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement.

Claims (10)

1. Install motor support of permanent magnet and coil, its characterized in that, last permanent magnet installation department and the coil winding portion of being equipped with of motor support, the permanent magnet installation department with be equipped with the swing clearance between the coil winding portion, still be equipped with iron core portion of holding on the motor support, the iron core portion of holding with be equipped with the opening between the swing clearance to make, the iron core can via the opening stretches out extremely the swing clearance.

2. The motor support according to claim 1, wherein a shaft accommodating portion for passing a shaft is further provided on the motor support, the coil winding portion includes a pair of supporting sidewalls provided between the permanent magnet mounting portion and the shaft accommodating portion for winding a coil, and any one of the supporting sidewalls is opened in a V-shape.

3. The permanent magnet and coil mounting motor mount of claim 2, comprising:

the first frame is provided with a first penetrating part;

the second frame is provided with a second penetrating part;

the first frame and the second frame are connected with each other, so that the first penetrating portion and the second penetrating portion can be used for penetrating the shaft rod, one part of the first frame and one part of the second frame jointly form the permanent magnet installation portion, and the other part of the first frame and the other part of the second frame jointly form the coil winding portion;

when the first frame and the second frame are relatively far away, the permanent magnet mounting part is enlarged so as to mount and dismount the permanent magnet;

when the first frame and the second frame are relatively close, the permanent magnet mounting portion is reduced so as to fasten the permanent magnet.

4. The motor bracket for mounting the permanent magnet and the coil according to claim 3, wherein the permanent magnet mounting portion comprises four first sunken grooves arranged on the first frame, and the four first sunken grooves are annularly arranged relative to the axis of the shaft rod; the permanent magnet mounting part also comprises four second sinking grooves arranged on the second frame, and the four second sinking grooves are annularly arranged relative to the axis of the shaft rod;

any one first sinking groove on the first frame is matched with one second sinking groove on the second frame, and the matched first sinking groove and the matched second sinking groove are arranged along the direction parallel to the axis of the shaft rod.

5. A permanent magnet and coil mounting motor support according to any one of claims 2-4, wherein the angle C of the opening of the V-shaped supporting side walls is in accordance with 90 ° ≦ C < 180 °.

6. The motor bracket for mounting the permanent magnet and the coil according to claim 3, wherein the first frame comprises a first bottom plate, the first bottom plate is provided with two first fan-shaped notches which are symmetrically arranged relative to the axis of the shaft rod, four first sinking grooves which are symmetrically arranged relative to the axis of the shaft rod are arranged on the same side of the first bottom plate, the supporting side walls comprise two first side walls which are arranged on the first bottom plate and extend along the axis direction of the shaft rod on one side of the first sinking grooves in a spaced manner, and the upper ends of the two first side walls are both provided with plug pins;

the second frame comprises a second bottom plate, the second bottom plate is provided with two second fan-shaped notches which are symmetrically arranged relative to the axis of the shaft lever, four second sinking grooves which are symmetrically arranged relative to the axis are formed in the same side of the second bottom plate, the supporting side wall comprises two second side walls which are positioned on one side of the second sinking grooves on the second bottom plate, extend along the axis direction of the shaft lever and are arranged in a spaced mode, and connecting holes for inserting the inserting pins are formed in the upper ends of the two second side walls;

the first penetrating part is arranged on the first bottom plate, and the second penetrating part is arranged on the second bottom plate;

the first sinking groove is matched with the second sinking groove to form the permanent magnet mounting part;

the first and second side walls and the first and second bottom plates form the coil wound portion.

7. The motor bracket for mounting the permanent magnet and the coil as claimed in claim 6, wherein a first boss is provided at the other side of the first bottom plate opposite to the first sinking groove; and a second convex column is arranged on the other side of the second bottom plate opposite to the second sinking groove.

8. The magnetic suspension sound wave motor is characterized by comprising a motor support provided with a permanent magnet and a coil according to any one of claims 1 to 7, wherein the motor support is provided with the coil and the permanent magnet, and further comprises an iron core, a shaft rod, a bearing and a shell, wherein the iron core is fixedly arranged on the shaft rod; the shaft rod passes through the motor bracket for mounting the permanent magnet and the coil, which is disclosed by any one of claims 1-7, and is fixedly connected with the shell through a bearing.

9. The magnetic suspension acoustic wave motor according to claim 8, wherein the iron core is an i-shaped iron core, the middle of the iron core is provided with a shaft rod connecting hole for the shaft rod to pass through, the iron core further comprises support walls which are symmetrically arranged in a straight line and located on two sides of the shaft rod connecting hole, and the end parts of the support walls are connected with driving wings.

10. An oral cleaning implement comprising a magnetically levitated acoustic wave motor as claimed in claim 8 or 9.

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