CN213125811U - Reciprocating high-frequency motion micro motor - Google Patents

Abstract

The utility model belongs to the micro motor field, especially, a reciprocal high frequency motion micro motor, it is big to there being the noise to current reciprocal high frequency motion micro motor, and is with high costs, the complicated and loaded down with trivial details problem of production of structure, the following scheme is proposed now, it includes action axle, active cell iron core subassembly, monolithic silicon steel sheet, circular telegram magnetic field produces the coil, positioning sleeve, positioning adjustment returns oily packing ring, support back lid, oiliness bearing, bearing NBR rubber sleeve, pure ferromagnetic force piece, sintered neodymium iron boron magnet, support holder, external fixation aluminum hull, two core circular telegram wires of high fatigue resistance nylon core rubber coating, center pin and welding electronic plate, support holder installs the inside at the external fixation aluminum hull, supports the bottom that the back lid was installed at the external fixation aluminum hull. The utility model has the advantages of good practicability, low noise, low loss and low cost, and can be widely used in the fields of electronics, instruments, adult products, beauty, electric toothbrushes, tooth washing and tooth washing machines, etc.

Description

Reciprocating high-frequency motion micro motor

Technical Field

The utility model relates to a micro motor technical field especially relates to a reciprocating high frequency motion micro motor.

Background

The micro motor is a motor with small volume and capacity and output power generally below several watts and a motor with special requirements on application, performance and environmental conditions, is commonly used in a control system to realize the functions of detecting, resolving, amplifying, executing or converting electromechanical signals or energy and the like, and is developed for the purpose.

The existing reciprocating high-frequency motion micro motor has the problems of high noise, high cost, complex structure and complex production.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects of the prior art that the noise is large, the cost is high, the structure is complex and the production is complex, and the proposed reciprocating high-frequency motion micro motor.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a reciprocating high-frequency motion micro motor comprises an action shaft, a rotor iron core assembly, a single silicon steel sheet, an electrified magnetic field generating coil, a positioning sleeve, a positioning adjustment oil return gasket, a support rear cover, an oil-retaining bearing, a bearing NBR rubber sleeve, a pure ferromagnetic sheet, a sintered neodymium iron boron magnet, a support bracket, an external fixed aluminum shell, a high fatigue resistance nylon core rubber-coated two-core electrified lead, a central shaft and a welding electronic board, wherein the support bracket is arranged in the external fixed aluminum shell, the support rear cover is arranged at the bottom of the external fixed aluminum shell, the action shaft is arranged on the outer side of the central shaft, the electrified magnetic field generating coil is wound on the outer side of the central shaft, and an installation sleeve engaging part is arranged on the external fixed aluminum shell.

Preferably, the action shaft comprises an oil storage groove, a waterproof groove, a load fixing position and a shaft connecting and fixing hole.

Preferably, the rotor iron core assembly comprises a central shaft fixing hole, a coil winding position and an insulating coating, and the insulating coating is sprayed on the outer side of the rotor iron core assembly.

Preferably, the energizing magnetic field generating coil comprises two electrical taps of the energizing magnetic field generating coil.

Preferably, the support rear cover comprises a first bearing assembly mounting hole, a nesting part, an oil storing hole and a high fatigue resistance nylon core rubber lead threading hole.

Preferably, the support bracket comprises a sintered neodymium iron boron magnet mounting clamping groove, a pure ferromagnetic sheet mounting part, a position sleeved with an aluminum shell, a moving shaft penetrating hole, a second bearing assembly mounting hole and an electrified magnetic force rotor accommodating cavity.

In the utility model, the reciprocating high-frequency motion micro motor 1) is made into an integral supporting bracket by using the injection molding of engineering plastics, and the concentricity and the beautiful appearance are ensured by additionally adding an aluminum shell;

2) an oil-containing bearing is sleeved on a rubber sleeve with NBR material to be used as a supporting point of a motion output shaft; the vibration-proof bearing assembly reduces the vibration sense generated outside the motor shell when the high-frequency motion miniature motor works, simultaneously reduces noise, is different from a ball bearing which uses metal on the market and shakes hands very when the miniature motor works, and simultaneously has simple structure, low cost and the like because the rubber sleeve and the oil-containing bearing are used to form the eaten bearing assembly;

3) the high-frequency motion motor uses two pure ferromagnetic sheets to conduct magnetism, thereby greatly strengthening the torque of the motor and improving the power; different from the market, the whole stretching shell of the galvanized electrolytic plate or the iron core made of the stamped silicon steel material is used for magnetic conduction (the framework processing cost is high, and the magnetic conduction performance is not good as that of pure iron); because two pure ferromagnetic sheets are used, the structure is simple, the sheet is easy to punch, the manufacturing cost is reduced, the performance of the motor is improved, and the resources are saved;

4) the bearing position in the middle of the action shaft of the high-frequency motion motor is provided with an oil storing groove for storing bearing grease, so that oil supply between oil bearing shafts is ensured for a long time, the service life of the motor is ensured, the noise of the motor cannot change after the service life is ensured, and meanwhile, an oil storing hole is designed in the bottom cover to ensure that oil supply between the oil bearing shafts is ensured for a long time, so that the service life of the motor is ensured, and the noise of the motor cannot change after the service life.

5) The electrified magnetic force active cell part of the high-frequency motion motor is provided with a wiring welding electronic board on a central shaft to switch and supply power to an electrified magnetic field coil, two taps of the electrified magnetic field coil are respectively paired with two core electrified leads wrapped by a high fatigue-resistant nylon core and welded on the welding electronic board, the two core electrified leads wrapped by the high fatigue-resistant nylon core are used for leading out the outside of the motor to be connected with a driving board, the connection is different from the connection by using an electric brush device or a copper sheet on the market, and the two taps of the coil are directly connected with the electrified magnetic field, so that the assembly difficulty of the electric brush device and the copper sheet device is directly reduced, and the cost.

The utility model has the advantages of good practicability, low noise, low loss and low cost, and can be widely used in the fields of electronics, instruments, adult products, beauty, electric toothbrushes, tooth washing and tooth washing machines, etc.

Drawings

Fig. 1 is a schematic diagram of an overall explosion structure of a reciprocating high-frequency motion micro-motor provided by the present invention;

fig. 2 is a schematic view of the appearance structure of a reciprocating high-frequency motion micro-motor provided by the present invention;

fig. 3 is a schematic cross-sectional structural view of a reciprocating high-frequency motion micro-motor provided by the present invention;

fig. 4 is an exploded schematic view of a rotor core assembly of a reciprocating high-frequency motion micro-motor according to the present invention;

fig. 5 is a schematic structural diagram of an external shape of a rotor core assembly portion of a reciprocating high-frequency motion micro motor according to the present invention;

fig. 6 is a schematic cross-sectional structural view of a rotor core assembly part of a reciprocating high-frequency motion micro-motor according to the present invention;

fig. 7 is a schematic diagram of a partial explosion structure of a reciprocating high-frequency motion micro-motor according to the present invention;

fig. 8 is a schematic view of a partial cross-sectional structure of a reciprocating high-frequency motion micro-motor according to the present invention;

fig. 9 is a schematic view of a part of the external structure of a reciprocating high-frequency motion micro-motor provided by the present invention;

fig. 10 is a schematic structural diagram of an external shape of a support bracket portion of a reciprocating high-frequency motion micro-motor according to the present invention;

fig. 11 is a schematic cross-sectional view of a supporting bracket portion of a reciprocating high-frequency motion micro-motor according to the present invention;

fig. 12 is a schematic structural diagram of an external shape of a supporting back cover part of a reciprocating high-frequency motion micro-motor according to the present invention;

fig. 13 is a schematic top view of a supporting rear cover portion of a reciprocating high-frequency motion micro-motor according to the present invention;

fig. 14 is a schematic cross-sectional view of a supporting rear cover portion of a reciprocating high-frequency motion micro-motor according to the present invention.

In the figure: 1. an action shaft; 1-1, oil storing ditch; 1-2, a waterproof groove; 1-3, load fixing position; 1-4, connecting a fixed hole with a shaft; 2. a rotor core assembly; 2-1, a central shaft fixing hole; 2-2, winding and installing a coil; 2-3, coating the insulating coating; 3. a single silicon steel sheet; 4. an energizing magnetic field generating coil; 4-1, two electrical taps of an electrified magnetic field generating coil are connected; 5. positioning the sleeve; 6. positioning and adjusting an oil return gasket; 7. supporting the rear cover; 7-1, a first bearing assembly mounting bore; 7-2, a sleeve part; 7-3, zang you acupoint; 7-4, a lead passing hole is encapsulated by a high fatigue-resistant nylon core; 8. an oil-retaining bearing; 9. a bearing NBR rubber sleeve; 10. pure ferromagnetic sheets; 11. sintering the neodymium iron boron magnet; 12. a support bracket; 12-1, mounting a clamping groove for the sintered neodymium iron boron magnet; 12-2, mounting parts of pure ferromagnetic sheets; 12-3, installing a sleeving matching part with the aluminum shell; 12-4, a moving shaft penetrates through a hole; 12-5, a second bearing assembly mounting hole; 12-6, electrifying a magnetic force rotor cavity; 13. an aluminum shell is fixed outside; 13-1, installing a sleeve positioning part; 14. the high fatigue-resistant nylon core is encapsulated with a two-core electrified lead; 15. a central shaft; 16. and welding the electronic board.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-14, a reciprocating high-frequency motion micro motor comprises an action shaft 1, a rotor iron core assembly 2, a single silicon steel sheet 3, an energizing magnetic field generating coil 4, a positioning sleeve 5, a positioning and adjusting oil return gasket 6, a supporting rear cover 7, an oil-containing bearing 8, a bearing NBR rubber sleeve 9, a pure ferromagnetic sheet 10, a sintered neodymium iron boron magnet 11, a supporting bracket 12, an external fixed aluminum shell 13, a high fatigue resistance nylon core rubber-coated two-core energizing wire 14, a central shaft 15 and a welding electronic board 16, wherein the supporting bracket 12 is installed inside the external fixed aluminum shell 13, the supporting rear cover 7 is installed at the bottom of the external fixed aluminum shell 13, the action shaft 1 is installed outside the central shaft 15, the energizing magnetic field generating coil 4 is wound outside the central shaft 15, and an installation sleeve engaging part 13-1 is arranged on the external fixed aluminum shell 13.

In the embodiment, the action shaft 1 comprises an oil storage ditch 1-1, a waterproof groove 1-2, a load fixing position 1-3 and a shaft connecting fixing hole 1-4.

In the embodiment, the rotor iron core assembly 2 comprises a central shaft fixing hole 2-1, a coil winding position 2-2 and an insulating coating layer 2-3, and the insulating coating layer 2-3 is sprayed on the outer side of the rotor iron core assembly 2.

In this embodiment, the energizing magnetic field generating coil 4 includes two electrical taps 4-1.

In the embodiment, the supporting rear cover 7 comprises a first bearing assembly mounting hole 7-1, a sleeving part 7-2, an oil storing hole 7-3 and a high fatigue resistance nylon core cladding lead threading hole 7-4.

In this embodiment, the supporting bracket 12 includes a sintered nd-fe-b magnet mounting slot 12-1, a pure ferromagnetic sheet mounting portion 12-2, an aluminum housing mounting and nesting portion 12-3, a moving shaft passing hole 12-4, a second bearing assembly mounting hole 12-5, and an energized magnetic rotor cavity 12-6.

In the utility model, when in use, the shaft connecting fixing holes 1-4 of the action shaft 1 are sleeved with the central shaft 15 of the rotor iron core component 2 and are combined into a whole by glue, the surface of the rotor iron core component 2 is sprayed with the insulating coating 2-3 by a spraying process, meanwhile, the positioning sleeve 5 and the positioning adjustment oil return gasket 6 are firstly sleeved, then the coil winding position 2-2 of the rotor iron core component 2 sprayed with the insulating coating 2-3 is wound with the energizing magnetic field generating coil 4 by a winding device, and after the wire is wound; a wiring welding electronic board 16 is arranged on the central shaft 15, two electric taps 4-1 of an electrified magnetic field generating coil 4 of the electrified magnetic field generating coil are respectively welded on the welding electronic board 16 with a high fatigue-resistant nylon core rubber-coated two-core electrified lead 14, and the high fatigue-resistant nylon core rubber-coated two-core electrified lead 14 is used for leading out the outside of the motor to be connected with a driving board;

the power-on magnetic rotor part is formed integrally, wherein a power-on magnetic field generating coil 4 is fixed on a rotor iron core assembly 2 to form a closed coil loop, a high fatigue-resistant nylon core rubber-coated two-core power-on lead 14 is a fatigue-resistant nylon core lead with long service life and is a material which can not be broken even when the rotor moves at high frequency, the connected high fatigue-resistant nylon core rubber-coated two-core power-on lead 14 penetrates out of a hole 7-4 for connecting with a driving PCB control board from the high fatigue-resistant nylon core rubber-coated lead of a supporting rear cover 7 when being assembled into an outer fixed aluminum shell 13 containing cavity, and if a start action switch of the driving PCB control board is switched on to generate a sinusoidal driving power supply, the power-on magnetic field generating coil 4 can generate an alternating magnetic field on the rotor iron core assembly 2 according to an electromagnetic principle;

the fixed magnetic driving part is characterized in that an oil bearing 8 is sleeved into a bearing assembly formed by a bearing NBR rubber sleeve 9 and then is arranged in a second bearing assembly mounting hole 12-5 of a supporting bracket 12 for fixation, then four sintered NdFeB magnets 11 are respectively arranged in sintered NdFeB magnet mounting clamping grooves 12-1 of the supporting bracket 12, glue is coated on the mounting positions 12-2 of the pure ferromagnetic pieces, then two pure ferromagnetic pieces 10 are respectively aligned with the mounting positions 12-2 of the pure ferromagnetic pieces for clamping and mounting and fixation, the oil bearing 8 is sleeved into the bearing NBR rubber sleeve 9 to form a bearing assembly, then the bearing assembly is arranged in a first bearing assembly mounting hole 7-1 of a supporting rear cover 7 for fixation, and an external fixed aluminum shell 13 is sleeved outside the supporting bracket 12 to complete the assembly of the stator part;

then, the end 15 of the central shaft of the action shaft 1 of the complete electrified magnetic force rotor is arranged in a bearing hole of an assembled rear cover of the oil-containing bearing 8, grease is added at the position of a bearing position of the action shaft 1, which is provided with an annular slotted oil-storing ditch 1-1, and then the end 1-3 of a load fixing position of the shaft penetrates out of the bearing hole of the fixed magnetic force driving part to the outside of the fixed magnetic force driving part; meanwhile, the sleeving part 7-2 of the supporting rear cover 7 and the sleeving part 13-1 of the outer fixed aluminum shell 13 are sleeved and fixed together and riveted to form a complete high-frequency vibration motor;

when a pulse power supply output by a sine control PCB electronic board supplies a closed electrified magnetic field of an electrified magnetic rotor to generate a coil 4, a variable magnetic force is generated, magnetic lines of force are concentrated on an assembled rotor iron core assembly 2 and are opposite to the magnetic lines of force of the sintered NdFeB magnet 11 in pairs with the polarity of a fixed magnetic driving part, an acting force which is pushed and pulled mutually is generated, and a rotor co-motion output part outputs strong back-and-forth high-frequency reciprocating motion output.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (6)

1. A reciprocating high-frequency motion micro motor comprises an action shaft (1), a rotor iron core assembly (2), a single silicon steel sheet (3), a energizing magnetic field generating coil (4), a positioning sleeve (5), a positioning adjustment oil return gasket (6), a supporting rear cover (7), an oil-containing bearing (8), a bearing NBR rubber sleeve (9), a pure ferromagnetic sheet (10), a sintered NdFeB magnet (11), a supporting bracket (12), an external fixing aluminum shell (13), a high fatigue resistance nylon core rubber-coated two-core energizing lead (14), a central shaft (15) and a welding electronic board (16), and is characterized in that the supporting bracket (12) is arranged inside the external fixing aluminum shell (13), the supporting rear cover (7) is arranged at the bottom of the external fixing aluminum shell (13), the action shaft (1) is arranged outside the central shaft (15), the energizing magnetic field generating coil (4) is wound outside the central shaft (15), the outer fixed aluminum shell (13) is provided with an installation sleeve matching part (13-1).

2. The reciprocating high-frequency motion micromotor according to claim 1, wherein the action shaft (1) comprises an oil storage groove (1-1), a waterproof groove (1-2), a load fixing position (1-3) and a shaft connecting fixing hole (1-4).

3. The reciprocating high-frequency motion micromotor according to claim 1, wherein the mover core assembly (2) comprises a central shaft fixing hole (2-1), a coil winding position (2-2) and an insulation coating layer (2-3), and the insulation coating layer (2-3) is sprayed on the outer side of the mover core assembly (2).

4. A reciprocating high-frequency motion micromotor according to claim 1, characterized in that said energizing magnetic field generating coil (4) comprises two electrical taps (4-1) of the energizing magnetic field generating coil.

5. A reciprocating high-frequency motion micromotor according to claim 1, wherein the supporting rear cover (7) comprises a first bearing assembly mounting hole (7-1), a nesting part (7-2), an oil storing hole (7-3) and a high fatigue resistance nylon core rubber lead passing hole (7-4).

6. The reciprocating high-frequency motion micromotor according to claim 1, wherein the support bracket (12) comprises a sintered NdFeB magnet mounting clamping groove (12-1), a pure ferromagnetic sheet mounting part (12-2), an aluminum shell mounting sleeve matching part (12-3), a motion shaft through hole (12-4), a second bearing assembly mounting hole (12-5) and an electrified magnetic rotor cavity (12-6).

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