CN210225070U - Stator module of sound wave motor and sound wave motor - Google Patents

Abstract

The utility model belongs to the technical field of the sound wave motor, specifically a stator module and sound wave motor of sound wave motor, including stator core, support and coil, the inside vibration chamber that forms behind the stator module installation, stator core include annular iron core body, and the inboard diametric symmetry along the iron core body of iron core body is provided with the iron core tooth, and the support joint is in the stator core both ends, and the support is from both ends cladding iron core tooth, and the coil is around establishing on the support, and the support is provided with the first spacing portion that is used for joint stator core and is used for fixed coil's breach portion, the utility model provides a pair of sound wave motor stator module is wire winding efficient, electromagnetic conversion efficiency is high.

Description

Stator module of sound wave motor and sound wave motor

Technical Field

The utility model belongs to the technical field of the sound wave motor, especially, relate to a stator module and sound wave motor of sound wave motor.

Background

The sound wave motor is an electromagnetic device which realizes electric energy conversion or transmission according to the electromagnetic induction law, has the main function of generating driving torque, and can be used as a power source of electric appliances or various machines, such as an electric motor core of an electric toothbrush. After the sound wave motor is electrified, the sound wave motor circularly moves to generate high-frequency vibration under the control of the control circuit, and then the toothbrush head is driven to generate high-frequency vibration.

General sound wave motor moves through the electromagnetic action between rotor subassembly and the stator module, and wherein stator module plays crucial effect in whole sound wave motor, and stator module is used for increasing the magnetic flux, realizes the biggest conversion of electromagnetic power, and the current stator module wire winding processing degree of difficulty is big, wire winding machining efficiency is low, and stator module's coil surface scratch, bad meeting arouses whole stator module performance such as broken string moreover.

Disclosure of Invention

An object of the utility model is to provide a stator module and sound wave motor of sound wave motor to solve among the prior art technical problem that influence stator module performance such as winding inefficiency, coil are bad.

In order to achieve the technical purpose, the utility model discloses use following technical scheme:

the utility model provides a stator module of sound wave motor, includes stator core, support and coil, the inside vibration chamber that forms behind the stator module installation, stator core includes annular iron core body, and the inboard diameter direction symmetry along the iron core body of iron core body is provided with the iron core tooth, and the support joint is in the stator core both ends, and the support is from both ends cladding iron core tooth, and the coil is around establishing on the support, and the support is provided with the first spacing portion that is used for joint stator core and is used for fixed coil's breach portion.

Further, the iron core body comprises a horizontal plane and an arc surface, and the iron core teeth are symmetrically arranged on the arc surface.

Further, the iron core teeth are arranged in a split mode, and the iron core teeth are provided with concave-convex groove matching portions.

Furthermore, a groove-shaped part is arranged on one side of the concave-convex groove matching part, a convex part is arranged on the other side of the concave-convex groove matching part, the shape of the groove-shaped part is matched with that of the convex part, and the shape of the convex part comprises a tooth shape, a wedge shape and an oblate shape.

Further, the iron core body is arranged in a split mode, and the iron core body is arranged in two groups in a split mode along the axial direction of the sound wave motor.

Furthermore, the support that the branch body set up or integrative setting, the support that the branch body set up is respectively from stator core's both ends axial joint in stator core, and integrative support that sets up radially inserts the iron core tooth and joint in stator core.

Further, the stator core, the bracket and the coil are integrally injection-molded.

The utility model provides a sound wave motor, is provided with the shell, including any one of the above-mentioned stator module of a sound wave motor, stator module installs in the shell, and the sound wave motor still includes rotor subassembly, bearing, pivot and is provided with conductive terminal's end cover, and the rotor subassembly sets up in the vibration intracavity that stator module formed, and rotor subassembly fixed connection is in the pivot, and the bearing is two respectively fixed connection in the pivot and is located stator module's both ends.

Furthermore, the shell is provided with a second limiting part for protecting the bearing, one end bearing on the rotating shaft is fixed in the end cover, and the other end bearing is arranged in the second limiting part of the shell.

Furthermore, the tail part of the rotating shaft at the joint of the bearing and the end cover is a drift diameter shaft.

The utility model provides a pair of stator module and sound wave motor of sound wave motor have following beneficial effect:

1. the structure of the sound wave motor stator assembly is redesigned in principle, the iron core body of the stator core and the design of the iron core teeth can reduce the winding difficulty and improve the winding efficiency, the arrangement of the stator core and the support protects the coil, and the performance of the stator assembly is prevented from being adversely affected by surface scratch, wire breakage and the like of the coil.

2. The inside vibration chamber that forms behind the stator module installation, rotor subassembly and pendulum shaft swing in the vibration intracavity that stator module formed, and the coil symmetry sets up in stator core arc surface both sides, and stator module magnetic flux is high, and electromagnetic conversion efficiency is high.

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 embodiments will be briefly described below. It is appreciated that the following drawings depict only certain embodiments of the invention and are therefore not to be considered limiting of its scope. For a person skilled in the art, it is possible to derive other relevant figures from these figures without inventive effort.

Fig. 1 is a schematic perspective view of a stator assembly of an acoustic wave motor.

Fig. 2 is an exploded view of the stator assembly of the sonic motor.

Fig. 3 is a schematic view of a stator assembly of the acoustic wave motor in a non-injection molding three-dimensional structure.

Fig. 4 is a left side view structural diagram of the stator core.

Fig. 5 is a schematic view of a structure of a stator core tongue and groove engaging portion.

Fig. 6 is a schematic diagram of a split structure of the stator core.

Fig. 7 is a schematic perspective view of the stent.

Fig. 8 is a schematic perspective view of the acoustic motor.

Fig. 9 is a perspective view of the housing of the acoustic motor.

Fig. 10 is a left side view schematic diagram of a stator assembly and a rotor assembly of the acoustic wave motor.

Fig. 11 is a schematic view of the structure of the rotating shaft and the bearing of the acoustic wave motor.

Reference numerals: 10-stator assembly, 100-stator core, 200-bracket, 300-coil, 400-injection molding, 101-core body, 102-core tooth, 103-horizontal plane, 104-arc surface, 105-concave-convex groove matching part, 106-convex part, 107-groove part, 201-first limiting part, 202-gap part, 500-shell, 600-rotating shaft, 700-bearing, 800-rotor assembly, 501-second limiting part, 801-vibration cavity and 802-end cover.

Detailed Description

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention will be combined below to describe the technical solution in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

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

Example 1

Referring to fig. 1 to 11, a stator assembly 10 of a sonic motor includes a stator core 100, a bracket 200, and a coil 300, a vibration cavity 801 is formed inside the stator assembly 10 after the stator assembly is installed, after the sonic motor is integrally assembled, a rotor assembly and a swing shaft of the sonic motor are located in the vibration cavity of the stator assembly 10, and a magnetic field is generated after the coil 300 in the stator assembly 10 is powered on, so as to drive the rotor assembly and the swing shaft of the sonic motor to swing, and meanwhile, the rotor assembly and the swing shaft are located in the vibration cavity of the stator assembly, thereby reducing the volume of the whole sonic motor, and making the sonic motor smaller and lighter.

As shown in fig. 1 to 6, the stator core 100 includes an annular core body 101, core teeth 102 are symmetrically disposed on the inner side of the core body 101 along the diameter direction of the core body 101, the core teeth 102 protrude toward the inner side of the core body 101, the ends of the core teeth 102 are semi-arc-shaped protrusions for limiting the coil 300, and 2 core teeth 102 are symmetrically disposed on both arc-shaped surfaces of the core body 101.

The bracket 200 is clamped at two ends of the stator core 100, the bracket 200 covers the core teeth 102 from two ends, as shown in fig. 1 to 7, the coil 300 is wound on the bracket 200, the axial length of the coil 300 is greater than that of the core body 101, the bracket 200 is provided with a first limiting portion 201 for clamping the stator core 100 and a notch portion 202 for fixing the coil 300, the bracket 200 is annular as a whole, notches matching the size of the core teeth 102 are arranged at two sides of the bracket 200, after the bracket 200 is inserted into the stator core 100, the notches at two sides of the bracket 200 are clamped on the core teeth 102, the first limiting portion 201 of the bracket 200 is clamped on the end surface of the core teeth 102, the notch portion 202 of the bracket 200 is a through notch, and the notch portion 202 is located on the arc side of the bracket 200. The design of the iron core body 101 and the iron core teeth 102 of the stator core 100 can reduce the winding difficulty and improve the winding efficiency, the winding difficulty can greatly lead to an unreasonable winding mode, and the performance of the stator assembly and the winding efficiency can be influenced. The arrangement of the stator core 100 and the bracket 200 protects the coil 300, and avoids the bad influence on the performance of the stator assembly, such as surface scratch and wire break of the coil 300.

Further, the iron core body 101 includes a horizontal plane 103 and an arc surface 104, as shown in fig. 4, the iron core teeth 102 are symmetrically disposed on the arc surface 104, the horizontal plane 103 and the arc surface 104 of the iron core body 101 are respectively symmetrically disposed, a cavity is disposed inside the iron core body 101, and a position is reserved for winding coils on the arc surface 104 side of the iron core body 101. The coils 300 are symmetrically arranged on two sides of the arc surface 104 of the stator core 100, and the electromagnetic conversion efficiency of the stator assembly 10 is high.

Iron core tooth 102 split sets up, and usable special tool improves stator wire winding fashioned performance and quality, and then improves wire winding efficiency and reduces the wire winding degree of difficulty, and iron core tooth 102 is provided with tongue and groove portion 105 that agrees with, and the tongue and groove portion 105 block that agrees with after the iron core wire winding finishes, when increasing wire winding efficiency, the coil has filled up the wire winding groove, and then has increased the performance of motor.

The concave-convex groove fitting portion 105 has a groove portion 107 on one side and a convex portion 106 on the other side, and as shown in fig. 4 to 5, the groove portion 107 is provided in a shape matching the convex portion 106, the groove portion 107 and the convex portion 106 are engaged with each other, and the shape of the convex portion 106 includes a tooth shape, a wedge shape, and a flat circular shape.

According to another embodiment, the iron core body 101 is arranged in a split manner, as shown in fig. 6, the iron core body 101 is arranged in two groups in a split manner along the axial direction of the acoustic wave motor, the iron core body 101 is split from the horizontal plane 103, and the split iron core bodies 101 are combined after the winding is completed, so that the winding efficiency can be further improved, and the winding difficulty can be further reduced.

The support 200 is arranged in a split mode or arranged integrally, the support 200 arranged in a split mode is axially clamped in the stator core 100 from two ends of the stator core respectively, the support 200 arranged in a split mode is radially inserted into the core teeth and clamped in the stator core 100, the support 200 arranged in a split mode does not affect each other, cost is saved through the support 200 arranged in an integral mode, the support 200 not only has a limited fixing effect on the coil 300, the coil 300 is prevented from being scratched by the outside, and the support 200 can also play an insulating role on the coil 300.

Stator core 100, support 200 and coil 300 are whole to mould plastics, and the axial length of injection molding 400 equals the axial length of coil 300, and the plastic shaping can further avoid stator coil 300 surface scratch, bad influence stator module performance such as broken string, and the motor operation copper consumes the scheduling problem that generates heat, adopts the plastic shaping, can increase substantially even heat dissipation, improves motor life, reduces the consumption of sound wave motor.

Example 2

This embodiment is another preferred embodiment in parallel with embodiment 1, the technical solution disclosed in embodiment 1 except for the distinguishing technical features belongs to the scope disclosed in this embodiment, and the technical solution disclosed in embodiment 1 except for the distinguishing technical features is not described repeatedly.

An acoustic wave motor is provided with a housing 500 and a stator assembly 10 of the acoustic wave motor as shown in fig. 8 to 11, wherein the stator assembly 10 is installed in the housing 500, the acoustic wave motor further includes a rotor assembly 800, a bearing 700, a rotating shaft 600 and an end cover 802 provided with a conductive terminal, the rotor assembly 800 is disposed in a vibration cavity 801 formed by the stator assembly 10, the rotor assembly 800 is fixedly connected to the rotating shaft 600, and the two bearings 700 are respectively and fixedly connected to the rotating shaft 600 and located at two ends of the stator assembly 10.

The shell 500 is provided with a second limiting part 501 for protecting the bearing 700, one end bearing on the rotating shaft 600 is fixed in the end cover 802, the other end bearing is arranged in the second limiting part 501 of the shell 500, the second limiting part 501 is wrapped on the bearing 700 at the front end of the sound wave motor, the bearing 700 reduces the friction force of the rotating shaft 600, the second limiting part 501 prevents the interference of the outside on the bearing 700, the bearing 700 is limited simultaneously, the positions of the bearings in the front and the back of the rotating shaft are further stabilized, and the performance stability and the reliability of the sound wave motor are ensured.

Profile and stator module 10 outline phase-match in the shell 500, stator module 10 and rotor subassembly 800 set up in the shell, bearing 700 is used for stabilizing the position of pivot 600, avoid the wearing and tearing of pivot 600, the afterbody of the pivot 600 of bearing 700 and end cover 802 junction is the latus rectum axle, the latus rectum axle is that bearing 700 is unanimous with the afterbody diameter of the pivot 600 of end cover 802 junction promptly, the other end that the casing was worn out to pivot 600 is the sound wave motor front end, afterbody bearing department establishes to the latus rectum axle can reduce cost, both ends atress is more even around making pivot 600 simultaneously.

Referring to fig. 10, the stator assembly 10 includes a coil 300, the coil 300 generates a magnetic field after being energized to drive the rotor assembly 800 to move, and the control circuit provides a reverse power signal to the coil 300 to reverse the magnetic field generated by the coil 300, so that the rotor assembly 800 moves in a reverse direction, and the rotation of the rotating shaft is circularly driven to move in a high frequency.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, but is provided for the purpose of facilitating understanding the method and the core concept thereof, and it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a stator module of sound wave motor, includes stator core, support and coil, its characterized in that, the inside vibration chamber that forms behind the stator module installation, stator core includes annular iron core body, the inboard diameter direction symmetry along the iron core body of iron core body is provided with the iron core tooth, the support joint is in the stator core both ends, the support is from both ends cladding iron core tooth, the coil is around establishing on the support, the support is provided with the first spacing portion that is used for joint stator core and the breach portion that is used for fixed coil.

2. A stator assembly for an acoustic wave motor, as set forth in claim 1, wherein: the iron core body comprises a horizontal plane and an arc surface, and iron core teeth are symmetrically arranged on the arc surface.

3. A stator assembly for an acoustic wave motor according to claim 1 or 2, wherein: the iron core teeth are arranged in a split mode and provided with concave-convex groove matching portions.

4. A stator assembly for an acoustic wave motor as set forth in claim 3, wherein: one side of the concave-convex groove fitting part is provided with a groove-shaped part, the other side of the concave-convex groove fitting part is provided with a convex part, the shape of the groove-shaped part is matched with that of the convex part, and the shape of the convex part comprises a tooth shape, a wedge shape and a flat circular shape.

5. A stator assembly for an acoustic wave motor according to claim 1 or 2, wherein: the iron core body is arranged in a split mode, and the iron core body is arranged in two groups in a split mode along the axial direction of the sound wave motor.

6. A stator assembly for an acoustic wave motor, as set forth in claim 1, wherein: the support components of a whole that can function independently set up or integrative setting, the support that the components of a whole that can function independently set up is from stator core's both ends axial joint in stator core respectively, and the support of integrative setting radially inserts the iron core tooth and joint in stator core.

7. A stator assembly for an acoustic wave motor, as set forth in claim 1, wherein: and the stator core, the bracket and the coil are integrally molded.

8. An acoustic motor, provided with a housing, characterized in that it comprises a stator assembly of an acoustic motor according to any of claims 1-7, the stator assembly being mounted in the housing, the acoustic motor further comprising a rotor assembly, a bearing, a rotating shaft and an end cap provided with conductive terminals, the rotor assembly being disposed in a vibration cavity formed by the stator assembly, the rotor assembly being fixedly connected to the rotating shaft, the bearings being two bearings respectively fixedly connected to the rotating shaft and located at both ends of the stator assembly.

9. The acoustic motor of claim 8, wherein: the shell is provided with a second limiting part for protecting the bearing, one end bearing on the rotating shaft is fixed in the end cover, and the other end bearing is arranged in the second limiting part of the shell.

10. The acoustic motor of claim 9, wherein: the tail of the rotating shaft at the joint of the bearing and the end cover is a drift diameter shaft.

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