CN217508366U - Integrated sound wave motor and electric toothbrush - Google Patents

Abstract

The utility model discloses a sound wave motor and electric toothbrush of integration, including shell subassembly and rotor, the shell subassembly internal rotation is arranged in to the rotor, and the shell subassembly includes casing, first stator, second stator and coil, and the relative both sides face of casing is located to first stator and second stator, and the coil is respectively around locating on first stator and the second stator, and coil and casing injection moulding, first stator and second stator divide the relative both sides of locating the rotor. Through setting up the first stator and the second stator of components of a whole that can function independently, the casing is connected with coil injection moulding, can let the stator, coil and casing realize fixedly in a step, in order to form a holistic part, the quantity of the part of letting whole motor when the assembly is still less, improve assembly efficiency, injection moulding's mode lets the part quantity of whole motor still less, the wholeness between the required part is stronger, then be favorable to strengthening the connection stability between each part, improve the durability of motor product.

Description

Integrated sound wave motor and electric toothbrush

Technical Field

The utility model belongs to sound wave motor field, in particular to sound wave motor and electric toothbrush of integration.

Background

The sound wave motor is commonly used in the electric toothbrush, when the motor is powered on in a forward and reverse direction alternately with a certain frequency, the output shaft of the motor can do reciprocating back and forth rotation according to the frequency, for example, the clockwise rotation is 10 degrees and the anticlockwise rotation is 10 degrees, so that the 'brushing' action is really realized, the vibration principle does not generate mechanical friction in the motor, the stability is strong, and the output power is large.

In current sound wave motor, including shell, stator and rotor, the stator center is located to the rotor and is rotatory, and the stator setting is in the shell, and the inside coiling that needs to carry out the coil earlier of stator, then in the stator installation shell, pass rotor, connecting axle at last, and the spare part that this kind of traditional sound wave motor contains when the equipment is more, and to the assembly factory, the supplied materials is more complicated, then assembly efficiency is lower, and the yields is just lower. And the more parts the product is assembled, the lower the durability.

SUMMERY OF THE UTILITY MODEL

The utility model provides a sound wave motor of integration aims at solving the more lower problem of assembly efficiency and durability that leads to of spare part in the current traditional sound wave motor.

According to the embodiment of the application, the integrated sound wave motor comprises a shell assembly and a rotor, wherein the rotor is arranged in the shell assembly and rotates; the shell assembly comprises a shell, a first stator, a second stator and coils, wherein the first stator and the second stator are arranged on two opposite side surfaces of the shell, the coils are respectively wound on the first stator and the second stator, and the coils and the shell are formed in an injection molding mode; the first stator and the second stator are respectively arranged on two opposite sides of the rotor, and the rotor is of an integrally formed structure.

Preferably, still include rubber cover and shell fragment, shell fragment one end with the rubber cover integrated into one piece is connected of moulding plastics, the other end of shell fragment peg graft in the rotor, the rubber cover lid fits the one end of casing.

Preferably, one end of the rotor, which is far away from the elastic sheet, is connected with an output shaft, and the rotor is coaxially connected with the output shaft; the housing is positioned with a bearing at a side corresponding to the output shaft, through which the output shaft passes.

Preferably, insulation shells are arranged between the first stator and the coil and between the second stator and the coil, and the insulation shells are sleeved in regions of the first stator and the second stator corresponding to the coil.

Preferably, the insulating shell and the shell are connected in an injection molding and integral forming mode.

Preferably, the rotor is an integrally molded structure of injection molded magnets.

Preferably, the rotor is an integrally formed structure of bonded neodymium iron boron.

The utility model also provides an electric toothbrush, its adoption as above-mentioned arbitrary integrated sound wave motor.

Compared with the prior art, the utility model provides a pair of sound wave motor and electric toothbrush of integration has following beneficial effect:

through setting up the first stator and the second stator of components of a whole that can function independently, the casing is connected with coil injection moulding, can be with first stator and second stator at injection moulding's in-process snap-on inside the casing, and this kind of injection moulding's mode can be when the coil coiling, goes on respectively on two first stators and the second stator of components of a whole that can function independently, and the coiling is open space, can avoid current interior less problem of winding space, improves wire-wound efficiency. Secondly, the stator, the coil and the shell can be fixed in one step in an injection molding mode to form an integral part, the number of the parts of the whole motor is reduced during assembly, the assembly efficiency is improved, an assembly factory can directly assemble the parts facing the incoming materials of the parts, the parts do not need to be installed, and the adaptation of automatic assembly lines is particularly facilitated. And the injection molding mode ensures that the number of parts of the whole motor is less, the integrity between the required parts is stronger, the connection stability between the parts is favorably strengthened, and the durability of the motor product is improved. And the injection molding mode can fix the stator and the coil and simultaneously synchronously manufacture the shell, so that the existing mode of mounting the stator to the shell can be avoided, direct molding can be realized, and the assembly process can be further simplified. Thirdly, the casing is made in the injection molding mode, so that the vibration inside the motor can be reduced through the plastic material, and the noise reduction effect is achieved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic structural diagram of an integrated sound wave motor according to a first embodiment of the present invention.

Fig. 2 is an exploded schematic view of an integrated sound wave motor according to a first embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a housing assembly in an integrated sound wave motor according to a first embodiment of the present invention.

Description of reference numerals:

1. a housing assembly; 11. a housing; 12. a first stator; 13. a second stator; 14. a coil; 15. an insulating case;

2. a rotor; 3. a rubber cover; 4. a spring plate; 5. a bearing;

100. and an output shaft.

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 some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in the specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

Referring to fig. 1, 2 and 3, a first embodiment of the present invention discloses an integrated sound wave motor, which includes a housing assembly 1 and a rotor 2, wherein the rotor 2 is disposed in the housing assembly 1 for rotation.

The shell assembly 1 comprises a shell 11, a first stator 12, a second stator 13 and a coil 14, wherein the first stator 12 and the second stator 13 are arranged on two opposite side surfaces of the shell 11, the coil 14 is respectively wound on the first stator 12 and the second stator 13, and the coil 14 and the shell 11 are molded in an injection mode.

The first stator 12 and the second stator 13 are respectively disposed on two opposite sides of the rotor 2, the rotor 2 is an integrally formed structure, and alternating magnetic fields are formed between the first stator 12 and the second stator 13, so that the rotor 2 rotates between the first stator 12 and the second stator 13 in a reciprocating manner.

It is understood that the rotor 2 may be an integrally formed structure based on injection molded magnets, which are also called injection molded ferrites, and are a product formed by injection molding of granules formed by mixing nylon and iron oxide powder (or rare earth).

It will be appreciated that the rotor 2 may also be provided as an integrally formed structure based on bonded neodymium iron boron, which is a composite magnet. The bonded neodymium iron boron magnet is prepared by mixing rapidly quenched NdFeB magnetic powder and a binder through compression molding or injection molding. The bonded magnet has high dimensional accuracy, can be made into a magnetic component with a relatively complex shape, and has the characteristics of one-step forming, multi-polar orientation and the like.

It is understood that the coil 14 may be pre-wound on the two first and second stators 12 and 13, and then placed in the corresponding mold, and the coil 14 is directly injection-molded with the housing 11, and then the first and second stators 12 and 13 are directly fixed in the molded housing 11 without additional assembly.

It can be understood that rotor 2 adopts the integrated into one piece structure of plastic magnetite, specifically is for adopting plastic and magnetic to carry out injection moulding's structure for 2 bodies of fashioned rotor have magnetism promptly, need not additionally set up the magnetite and install on rotor 2.

Please continue to combine with fig. 1 and fig. 2, the integrated sound wave motor further includes a rubber cover 3 and a spring plate 4, one end of the spring plate 4 is connected to the rubber cover 3 by injection molding, the other end of the spring plate 4 is inserted into the rotor 2, the rubber cover 3 covers one end of the housing 11, and the spring plate 4 can provide a counter-rotating force for the rotation of the rotor 2, so that the rotor 2 has a faster speed and a more stable effect during reciprocating rotation.

One end, far away from the elastic sheet 4, of the rotor 2 is connected with an output shaft 100, and the rotor 2 is coaxially connected with the output shaft 100. The housing 11 is positioned with a bearing 5 at a side corresponding to the output shaft, and the output shaft 100 passes through the bearing 5.

An insulating shell 15 is arranged between the first stator 12 and the coil 14 and between the second stator 13 and the coil 14, the insulating shell 15 is sleeved in the area of the first stator 12 and the second stator 13 corresponding to the coil 14, the insulating shell 15 can be sleeved on the outer peripheral sides of the first stator 12 and the second stator 13 in advance before the coil 14 is wound, and then the coil 14 is wound on the surface of the insulating shell 15 so as to form an insulating effect through the insulating shell 15.

Optionally, as an embodiment, the insulating casing 15 is connected to the housing 11 by injection molding, that is, when injection molding is performed, the insulating casing 15 is formed between the first stator 12 and the coil 14 and between the second stator 13 and the coil 14, that is, the stator and the coil 14 may be insulated by injection molding.

A second embodiment of the present invention provides an electric toothbrush which uses the integrated sonic motor provided in the first embodiment to implement an automatic brushing action by inserting a brush head of the electric toothbrush into an output shaft 100.

Compared with the prior art, the utility model provides a pair of sound wave motor and electric toothbrush of integration has following beneficial effect:

through setting up the first stator and the second stator of components of a whole that can function independently, the casing is connected with coil injection moulding, can be with first stator and second stator at injection moulding's in-process snap-on inside the casing, and this kind of injection moulding's mode can be when the coil coiling, goes on respectively on two first stators and the second stator of components of a whole that can function independently, and the coiling is open space, can avoid current interior less problem of winding space, improves wire-wound efficiency. Secondly, the mode of injection moulding can let stator, coil and casing realize fixedly in a step to form an holistic part, let the quantity of the part of whole motor when the assembly is less, improve assembly efficiency, the incoming material of this part is faced in the assembly factory, can directly assemble, need not carry out the installation between the part again, does benefit to the adaptation of automatic assembly line in particular. And the injection molding mode ensures that the number of parts of the whole motor is less, the integrity between the required parts is stronger, the connection stability between the parts is favorably strengthened, and the durability of the motor product is improved. And the injection molding mode can synchronously manufacture the shell while realizing the fixation of the stator and the coil, so that the existing mode of mounting the stator to the shell can be avoided, the direct molding is realized, and the assembly process can be further simplified. Thirdly, the casing is made in the injection molding mode, so that the vibration inside the motor can be reduced through the plastic material, and the noise reduction effect is achieved.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (8)

1. An integrated sound wave motor is characterized in that: the rotor is arranged in the shell component and rotates;

the shell assembly comprises a shell, a first stator, a second stator and coils, wherein the first stator and the second stator are arranged on two opposite side surfaces of the shell, the coils are respectively wound on the first stator and the second stator, and the coils and the shell are formed in an injection molding mode;

the first stator and the second stator are respectively arranged on two opposite sides of the rotor, and the rotor is of an integrally formed structure.

2. The integrated acoustic wave motor of claim 1, wherein: still include rubber cover and shell fragment, shell fragment one end with the rubber cover integrated into one piece that moulds plastics is connected, the other end of shell fragment peg graft in the rotor, the rubber cover lid fits the one end of casing.

3. The integrated acoustic wave motor of claim 2, wherein: one end of the rotor, which is far away from the elastic sheet, is connected with an output shaft, and the rotor is coaxially connected with the output shaft;

the housing is positioned with a bearing at a side corresponding to the output shaft, through which the output shaft passes.

4. The integrated acoustic wave motor of claim 1, wherein: and insulating shells are arranged between the first stator and the coil and between the second stator and the coil, and the insulating shells are sleeved in the corresponding coil areas of the first stator and the second stator.

5. The integrated acoustic wave motor of claim 4, wherein: the insulating shell and the shell are connected in an injection molding and integral forming mode.

6. The integrated acoustic wave motor of claim 1, wherein: the rotor is an integrated structure of injection molding magnets.

7. The integrated acoustic wave motor of claim 1, wherein: the rotor is an integrally formed structure bonded with neodymium iron boron.

8. An electric toothbrush characterized by: use of an integrated sonic motor according to any of claims 1-7.

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