CN113410936A - Moving-coil small-angle reciprocating rotation motor and implementation method thereof - Google Patents

Abstract

The invention discloses a moving-coil type low-angle reciprocating rotation motor which comprises an outer shell, wherein a magnetic steel group is connected to the inner wall of the outer shell, a rotor assembly is rotatably connected inside the outer shell, an end cover is arranged at one end of the outer shell, a spring plate assembly is arranged on the rotor assembly and comprises a first spring plate and a second spring plate, the first spring plate and the second spring plate are both arranged inside the outer shell, one ends of the first spring plate and the second spring plate are connected with the rotor assembly, and the other ends of the first spring plate and the second spring plate extend to the outside of the end cover; the invention also discloses a realization method of the moving-coil type small-angle reciprocating rotation motor. According to the invention, the external electric signal is led to the coil through the first elastic sheet and the second elastic sheet and is deformed when the motor works, so that the rotor assembly can rotate, the movement of the motor and the leading-in of a circuit are realized, the friction between the brush of the traditional motor and the commutator is avoided, and the performance and the service life of the product are improved.

Description

Moving-coil small-angle reciprocating rotation motor and implementation method thereof

Technical Field

The invention belongs to the technical field of motors, and particularly relates to a moving-coil type small-angle reciprocating rotation motor and an implementation method thereof.

Background

The traditional iron core direct current vibration micromotor is widely applied to vibration products such as electric toothbrushes, health care equipment, personal care and the like. However, in the conventional iron core direct current vibration motor, an eccentric block is mounted on an output shaft of an iron core motor, and the motor rotates to drive the eccentric block to rotate to generate centrifugal force to realize vibration. In the vibration mode, because of the existence of unbalanced centrifugal force, the output shaft can continuously generate radial pressure on the bearing, so that the bearing is easy to wear, and the service life and the reliability of a product are reduced; and traditional iron core direct current vibrating motor, the output shaft can not provide reciprocating type swing, and the vibration is transmitted away through the radial vibration of motor fuselage, and when using on cleaning articles such as electric toothbrush, the clear effect is not good to let the user feel uncomfortable easily.

Chinese patent publication No. CN204858930U discloses a miniature reciprocating oscillator, in which two pairs of pole piece-shaped magnetic steels are arranged in a housing, when a current between positive and negative phases of the oscillator is applied, a rotor is sequentially attracted by N and S poles of the fixed magnetic steels to rotate in a reciprocating manner, so as to form a reciprocating oscillation acting according to a given frequency, which can generate a reciprocating oscillation with stable oscillation frequency, long service life and high reliability, and can be widely used in products such as electric toothbrushes, massagers, cleaning products, and the like.

But it still has the following problems: there is friction between the brushes and the commutator which affects the performance and life of the motor.

Disclosure of Invention

The present invention is directed to a moving-coil type small-angle reciprocating rotary motor, which solves the above problems in the prior art. The moving-coil small-angle reciprocating rotary motor provided by the invention has the characteristics of avoiding the friction between the electric brush and the commutator, improving the performance of the product and prolonging the service life of the product.

The invention also aims to provide a method for realizing the moving-coil type small-angle reciprocating rotation motor.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a moving coil type low-angle reciprocating rotation motor, which comprises an outer shell, be connected with magnet steel group on the inner wall of shell body, the internal rotation of shell body is connected with the rotor subassembly, the one end of shell body is equipped with the end cover, be equipped with the shell fragment subassembly on the rotor subassembly, the shell fragment subassembly includes first shell fragment and second shell fragment, wherein, first shell fragment and second shell fragment all set up the inside at the shell body, the one end and the rotor subassembly of first shell fragment and second shell fragment are connected, the other end of first shell fragment and second shell fragment extends to the outside of end cover.

In order to interact with the magnetic field generated by the magnetic steel group and provide power for the motor, the rotor assembly further comprises a shaft, an iron core and a coil, wherein the iron core is sleeved on the circumference of the shaft, and the coil is arranged on the iron core.

In order to provide an assembly surface for the first spring plate and the second spring plate, the spring plate assembly further comprises a support, wherein the support is arranged on the circumference of the shaft.

In order to ensure the guiding of the movement and the circuit, further, the first elastic sheet comprises a conductive end, a bending part and a fixed end, wherein one end of the bending part is connected with the conductive end, the other end of the bending part is connected with the fixed end, the fixed end is connected with the bracket, the fixed end is electrically connected with the coil, the conductive end extends to the outside of the end cover, and the structure of the second elastic sheet is the same as that of the first elastic sheet.

In order to facilitate the deformation of the first elastic sheet and the second elastic sheet, the bending part is of a U-shaped structure.

In order to be rotatable relative to the outer housing and the end caps, the two ends of the shaft are rotatably connected to the outer housing and the end caps, respectively, by bearings.

In order to provide the driving magnetic field, further, the magnetic steel group comprises four magnetic steels, and the four magnetic steels are symmetrically arranged inside the outer shell.

Further, the invention provides a method for implementing a moving-coil small-angle reciprocating rotary motor, comprising the following steps:

mounting four magnetic steels on the inner wall of the outer shell;

secondly, winding or installing the coil on the iron core;

fixing the fixed ends of the first elastic sheet and the second elastic sheet to a bracket, and mounting the bracket to the shaft;

fourthly, the incoming and outgoing lines of the coil are respectively connected with the fixed ends of the first elastic sheet and the second elastic sheet;

fifthly, enabling the conductive ends of the first elastic sheet and the second elastic sheet to penetrate through the notches in the end cover;

and (VI) the assembled rotor assembly is arranged in the outer shell, and the end cover is connected with the outer shell to complete the assembly.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the external electric signal is led to the coil through the first elastic sheet and the second elastic sheet, and the first elastic sheet and the second elastic sheet deform when the motor works, so that the rotor assembly can rotate, the movement of the motor and the leading-in of a circuit are realized, the friction between a traditional motor brush and a commutator is avoided, and the performance and the service life of a product are improved;

2. the bent part is of a U-shaped structure, so that the first elastic sheet and the second elastic sheet are convenient to deform;

3. the first elastic sheet and the second elastic sheet are both conductive pieces, so that the first elastic sheet and the second elastic sheet have good deformation performance and good conductivity.

Drawings

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

FIG. 2 is an exploded view of the rotor assembly of the present invention;

FIG. 3 is an exploded view of the spring assembly of the present invention;

FIG. 4 is a schematic structural diagram of a first resilient piece according to the present invention;

FIG. 5 is a schematic cross-sectional view of the present invention;

in the figure: 1. an outer housing; 2. a magnetic steel group; 3. a rotor assembly; 31. a shaft; 32. an iron core; 33. a coil; 4. a spring plate assembly; 41. a support; 42. a first spring plate; 421. a conductive terminal; 422. a fixed end; 423. a bending section; 43. a second elastic sheet; 5. a bearing; 6. and (4) end covers.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1-5, the present invention provides the following technical solutions: the utility model provides a moving coil type low-angle reciprocating rotation motor, including shell body 1, be connected with magnet steel group 2 on the inner wall of shell body 1, the inside rotation of shell body 1 is connected with rotor subassembly 3, the one end of shell body 1 is equipped with end cover 6, be equipped with shell fragment subassembly 4 on the rotor subassembly 3, shell fragment subassembly 4 includes first shell fragment 42 and second shell fragment 43, wherein, first shell fragment 42 and second shell fragment 43 all set up the inside at shell body 1, the one end and the rotor subassembly 3 of first shell fragment 42 and second shell fragment 43 are connected, the other end of first shell fragment 42 and second shell fragment 43 extends to the outside of end cover 6.

Specifically, the rotor assembly includes a shaft 31, a core 32, and a coil 33, wherein the core 32 is disposed on a circumference of the shaft 31, and the coil 33 is disposed on the core 32.

Through adopting above-mentioned technical scheme, form the electric field through coil 33 circular telegram, the magnetic field interact that electric field and magnet steel group 2 produced provides power for the motor.

Specifically, the spring assembly 4 further includes a bracket 41, wherein the bracket 41 is disposed on the circumference of the shaft 31.

By adopting the above technical scheme, the bracket 41 provides an assembly surface for the first elastic sheet 42 and the second elastic sheet 43.

Specifically, the first elastic piece 42 includes a conductive end 421, a bent portion 423 and a fixed end 422, wherein one end of the bent portion 423 is connected with the conductive end 421, the other end of the bent portion 423 is connected with the fixed end 422, the fixed end 422 is connected with the bracket 41, the fixed end 422 is electrically connected with the coil 33, the conductive end 421 extends to the outside of the end cover 6, and the structure of the second elastic piece 43 is the same as that of the first elastic piece 42.

By adopting the technical scheme, the conductive end 421 is used for connecting an external power supply, the fixed end 422 is used for connecting the bracket 41 and the coil 33, and the bending part 423 deforms when the motor works, so that the movement and the circuit introduction are ensured.

Specifically, both ends of the shaft 31 are rotatably connected to the outer housing 1 and the end cap 6, respectively, via bearings 5.

By adopting the above technical solution, the shaft 31 can rotate relative to the outer housing 1 and the end cover 6.

Specifically, the magnetic steel group 2 comprises four magnetic steels, and the four magnetic steels are symmetrically arranged inside the outer shell 1.

Through adopting above-mentioned technical scheme, provide driving magnetic field through four magnet steels.

Example 2

The present embodiment is different from embodiment 1 in that: specifically, the bent portion 423 has a U-shaped structure.

By adopting the technical scheme, the first elastic sheet 42 and the second elastic sheet 43 are convenient to deform.

Specifically, the first elastic piece 42 and the second elastic piece 43 are conductive pieces, including but not limited to metal pieces with good elasticity and high strength, such as copper and stainless steel, and the embodiment is preferably made of stainless steel.

By adopting the above technical scheme, the first elastic sheet 42 and the second elastic sheet 43 have good deformation performance and good conductivity.

Further, the implementation method of the moving-coil small-angle reciprocating rotation motor provided by the invention comprises the following steps:

bonding the four magnetic steels on the inner wall of the outer shell 1 through glue;

secondly, winding or mounting the coil 33 on the iron core 32;

fixing the fixed ends 422 of the first and second resilient sheets 42 and 43 to the bracket 41, and mounting the bracket 41 to the shaft 31;

fourthly, the incoming and outgoing lines of the coil 33 are respectively connected with the fixed ends 422 of the first elastic sheet 42 and the second elastic sheet 43;

(V) the conductive ends 421 of the first elastic sheet 42 and the second elastic sheet 43 pass through the notches on the end cover 6;

and (VI) the assembled rotor assembly 3 is put into the outer shell 1, and the end cover 6 is connected with the outer shell 1 to finish the assembly.

The working principle of the invention is as follows: connect the electrically conductive end 421 of first shell fragment 42 and second shell fragment 43 in external power source, the electric current switches on to coil 33 through first shell fragment 42 and second shell fragment 43 and produces the electric field, the magnetic field interact that electric field and magnet steel group 2 produced drives rotor subassembly 3 and is the reciprocating rotation of certain angle, the flexion 423 of first shell fragment 42 and second shell fragment 43 takes place to deform when rotor subassembly 3 rotates, has ensured the leading-in of motion and circuit.

In summary, in the invention, the first elastic sheet 42 and the second elastic sheet 43 are used for guiding external electric signals to the coil 33, and the first elastic sheet 42 and the second elastic sheet 43 deform when the motor works, so that the rotor assembly 3 can rotate, the movement of the motor and the guiding of a circuit are realized, the friction between a brush of a traditional motor and a commutator is avoided, and the performance and the service life of a product are improved; the bending part 423 is of a U-shaped structure, so that the first elastic sheet 42 and the second elastic sheet 43 are convenient to deform; the first elastic sheet 42 and the second elastic sheet 43 are both conductive pieces, so that the first elastic sheet 42 and the second elastic sheet 43 have good deformation performance and good conductivity.

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

Claims (8)

1. The utility model provides a moving coil type small angle reciprocating rotary motor, includes the shell body, its characterized in that: the inner wall of shell body is connected with magnet steel group, the inside of shell body rotates and is connected with the rotor subassembly, the one end of shell body is equipped with the end cover, be equipped with the shell fragment subassembly on the rotor subassembly, the shell fragment subassembly includes first shell fragment and second shell fragment, wherein, first shell fragment and second shell fragment all set up the inside at the shell body, the one end and the rotor subassembly of first shell fragment and second shell fragment are connected, the other end of first shell fragment and second shell fragment extends to the outside of end cover.

2. A moving coil small angle reciprocating rotary motor as defined in claim 1 wherein: the rotor subassembly includes axle, iron core and coil, and wherein, the iron core cover is established on the circumference of axle, and the coil is established on the iron core.

3. A moving coil small angle reciprocating rotary motor as defined in claim 2 wherein: the shrapnel component also comprises a bracket, wherein the bracket is arranged on the circumference of the shaft.

4. A moving coil small angle reciprocating rotary motor as defined in claim 3 wherein: the first elastic sheet comprises a conductive end, a bent portion and a fixed end, wherein one end of the bent portion is connected with the conductive end, the other end of the bent portion is connected with the fixed end, the fixed end is connected with a support, the fixed end is electrically connected with the coil, the conductive end extends to the outside of the end cover, and the structure of the second elastic sheet is the same as that of the first elastic sheet.

5. A moving coil small angle reciprocating rotary motor as defined in claim 4 wherein: the bending part is of a U-shaped structure.

6. A moving coil small angle reciprocating rotary motor as defined in claim 2 wherein: and two ends of the shaft are respectively and rotatably connected with the outer shell and the end cover through bearings.

7. A moving coil small angle reciprocating rotary motor as defined in claim 1 wherein: the magnetic steel group comprises four magnetic steels, and the four magnetic steels are symmetrically arranged inside the outer shell.

8. A method for realizing a moving coil type small angle reciprocating rotary motor according to any one of claims 1 to 7, comprising the following steps:

mounting four magnetic steels on the inner wall of the outer shell;

secondly, winding or installing the coil on the iron core;

fixing the fixed ends of the first elastic sheet and the second elastic sheet to a bracket, and mounting the bracket to the shaft;

fourthly, the incoming and outgoing lines of the coil are respectively connected with the fixed ends of the first elastic sheet and the second elastic sheet;

fifthly, enabling the conductive ends of the first elastic sheet and the second elastic sheet to penetrate through the notches in the end cover;

and (VI) the assembled rotor assembly is arranged in the outer shell, and the end cover is connected with the outer shell to complete the assembly.

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