Stator core structure of ultrasonic motor

Abstract

The utility model discloses a stator iron core structure of an ultrasonic motor, which comprises two iron cores, a winding framework with an integrated connection structure is arranged at the relative middle position of the two iron cores, two opposite side edges of the two iron cores linearly extend to form iron surrounding edges with the integrated connection structure, and the iron surrounding edges on the two iron cores are in butt joint. According to the structural design, a split type structure is adopted to form the two iron cores, the two iron cores can be wound separately, the winding framework is exposed after the two iron cores are separated, a pin type winding mode can be converted into a flying fork type winding mode, and the winding efficiency is effectively improved; meanwhile, during clamping, the iron surrounding edge can be directly and rapidly clamped and positioned by the clamping jaw, and the iron surrounding edge also effectively protects the coil from being scratched and collided in the assembling process; in addition, the iron core, the winding framework and the iron surrounding edge are of an integrated connection structure, the structure is effectively simplified, the structural stability is enhanced, assembly is easy, the magnetic circuit continuity is ensured, the magnetic leakage loss is reduced, and the motor performance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field, concretely relates to an ultrasonic motor stator core structure. BACKGROUND

[0002] With the development of society, the improvement of people's living standards, the market will gradually increase the demand for ultrasonic toothbrushes, and the demand for the core component of the ultrasonic toothbrush, the ultrasonic toothbrush motor, will also increase. The stator core of the prior art center usually adopts the pin type winding mode, which has great winding difficulty, reduces the working efficiency, and has low full slot rate, affecting the performance of the ultrasonic toothbrush motor.

[0003] Therefore, the utility model discloses a kind of ultrasonic toothbrush motor structures with announcement number "CN207542896U", it includes stator chip and iron machine shell, the iron machine shell is assembled with stator chip, the iron machine shell is equipped with recess A, the stator chip adopts split type scheme, i.e. two independent individuals, the stator chip is equipped with winding embedding groove one and winding embedding groove two, the stator chip is equipped with insulating sheet in winding embedding groove one and winding embedding groove two, winding embedding groove one and winding embedding groove two are wound with winding coil, the winding embedding direction of winding coil is the direction of the arrow of winding embedding groove one and winding embedding groove two, the stator chip is assembled into the iron machine shell and is tightly fitted with the inner wall of recess A of iron machine shell, i.e. the stator chip is tightly fitted with the inner wall of recess A of iron machine shell. Since the stator chip is an independent structure, it can realize flying fork type winding, effectively improve winding efficiency, but in the winding process, it is difficult to quickly position the stator chip for clamping winding, and the coil is also easily scratched during the assembly of the stator chip and the iron machine shell, so it is difficult to ensure product quality. UTILITY MODEL CONTENTS

[0004] In view of the above shortcomings, the utility model aims to provide an ultrasonic motor stator core structure with reasonable structure design, easy clamping and assembly.

[0005] To achieve the above-mentioned purpose, the utility model provides the technical scheme as follows:

[0006] An ultrasonic motor stator core structure includes two iron cores, the two iron cores are arranged opposite to each other, a winding skeleton with an integrated structure is arranged at the middle position of the two iron cores, the two sides of the two iron cores are linearly extended to form iron surrounding edges with an integrated structure, and the iron surrounding edges on the two iron cores are connected opposite to each other.

[0007] As a preferred scheme of the utility model, the lengths of the iron surrounding edges on the two iron cores are consistent, which improves the symmetry and stability of the iron core structure and reduces problems such as vibration and magnetic field uniformity caused by inconsistent lengths.

[0008] As a preferred scheme of the utility model, the butt joint surface of the iron surrounding edge is provided with an arc-shaped recess at the inner side, and the butt joint surface of the other surrounding edge opposite to the iron surrounding edge is provided with an arc-shaped protrusion matched with the arc-shaped recess, which is matched closely and effectively, can prevent structural looseness, improve impact resistance, and prolong the service life of the iron core.

[0009] As a preferred scheme of the utility model, the butt joint surface of the iron surrounding edge is provided with a limiting recess at the outer side, which is beneficial to precise fitting and prevents assembly deviation during motor assembly.

[0010] As a preferred scheme of the utility model, the cross section of the winding framework is in the shape of a "human" character, which can reduce the risk of coil looseness, increase the number of coil turns, and improve the magnetic field strength.

[0011] As a preferred scheme of the utility model, the outer surface of the iron core is in the shape of an arc-shaped protrusion at the middle part, which is reasonable in structural design.

[0012] As a preferred scheme of the utility model, the outer surface of the iron core is provided with an outer recess at the middle position, and the inner surface of the winding framework is provided with an inner recess at the middle position, which is more beneficial to quick positioning and clamping and flying fork type winding.

[0013] The utility model has the advantages that the utility model is reasonable in structural design, adopts a split structure to form two iron cores, i.e., the two iron cores are combined, winding can be performed separately, the winding framework is exposed after being separated, the plug-pin type winding mode can be converted into the flying fork type winding mode, the winding efficiency is effectively improved, the clamping jaw can directly clamp and position the iron surrounding edge without shielding the winding framework during clamping, the problem of affecting and interfering with winding of the traditional clamping jaw is effectively solved, the iron surrounding edge also effectively protects the coil from being scratched during assembly, in addition, the iron core, the winding framework and the iron surrounding edge are integrally connected, which not only effectively simplifies the structure, enhances the structural stability, and is easy to assemble, but also ensures continuous magnetic circuit, reduces magnetic leakage loss, and improves motor performance.

[0014] The utility model is further described below in combination with the drawings and embodiments. DRAWINGS

[0015] Fig. 1 is the front view structural schematic diagram of the utility model.

[0016] Fig. 2 is the three-dimensional structural schematic diagram of the utility model.

[0017] Fig. 3 is the exploded structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0018] In the embodiment, refer to Figs. 1 to 3 The ultrasonic motor stator core structure provided by the embodiment comprises two cores 1, the two cores 1 are oppositely arranged, and a winding skeleton 11 of an integrated connection structure is arranged at the opposite middle positions of the two cores 1. The cross section of the winding skeleton 11 is preferably in the shape of a "human" character, which can reduce the risk of coil loosening, increase the number of turns of the coil, and improve the strength of the magnetic field.

[0019] The opposite two side edges of the two cores 1 are linearly extended to form an iron surrounding edge 12 of an integrated connection structure, which ensures the continuity of the magnetic circuit and reduces the magnetic loss. Preferably, the lengths of the iron surrounding edges 12 on the two cores 1 are consistent, which improves the symmetry and stability of the core structure and reduces the problems of vibration and uniformity of the magnetic field caused by inconsistent lengths.

[0020] The iron surrounding edges 12 on the two cores 1 are oppositely connected, and preferably, an arc-shaped recess 121 is arranged at the inner side position of the abutting surface of the iron surrounding edge 12, and an arc-shaped protrusion 122 matched with the arc-shaped recess 121 is arranged at the abutting surface of the other abutting edge oppositely connected with the iron surrounding edge 12. Through the cooperation of the arc-shaped recess 121 and the arc-shaped protrusion 122, the structure is tightly matched, the effect is good, the structure loosening can be prevented, the impact resistance can be improved, and the service life of the core 1 can be prolonged.

[0021] A limiting groove 123 is arranged at the outer side position of the abutting surface of the iron surrounding edge 12, which is beneficial to precise fitting and prevents assembly deviation during assembly of the motor.

[0022] The middle part of the outer surface of the core 1 is in the shape of an arc-shaped protrusion, an outer groove 13 is arranged at the middle position of the outer surface of the core 1, and an inner groove 111 is arranged at the middle position of the inner surface of the winding skeleton 11. During positioning and clamping, the outer groove 13 and the inner groove 111 can be beneficial to quick positioning and clamping and flying fork type winding.

[0023] During winding clamping, the core 1 can be quickly positioned on the clamp through the outer groove 13, the clamping jaw of the clamp can directly quickly clamp and position the iron surrounding edge 12 without shielding the winding skeleton 11, effectively solving the problem of traditional clamping jaws affecting and interfering with winding. The center top angle of the winding head of the flying fork type winding machine can abut on the inner groove 111 to quickly position and perform flying fork type winding. After winding, the iron surrounding edge 12 can effectively protect the coil from being scratched during assembly. Moreover, the core 1, the winding skeleton 11 and the iron surrounding edge 12 are of an integrated connection structure, which effectively simplifies the assembly process, and the assembly is simple, convenient and efficient. Preferably, a winding column is arranged on the core 1, the outgoing copper wire of the coil winding can be wound on the winding column for positioning and extended along the winding column for outgoing, so as to facilitate subsequent assembly and soldering process. A threaded groove can also be arranged on the winding column, which is more beneficial to the winding of the outgoing copper wire of the coil winding and is not easy to displace and loosen.

[0024] According to the disclosure and teaching of the above description, the skilled in the art of the present application can also change and modify the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the present application should also fall within the protection scope of the claims of the present application. In addition, although some specific terms are used in the specification, these terms are only for convenience of description and do not constitute any limitation on the present application. As described in the above embodiments of the present application, other structures of the iron core obtained by using the same or similar structures are all within the protection scope of the present application.

Claims

1. An ultrasonic motor stator core structure comprising two cores, characterized by, Two iron cores are oppositely arranged, a winding skeleton of integral connection structure is arranged at the opposite middle position of the two iron cores, the opposite two side positions of the two iron cores are linearly extended to form iron surrounding edges of integral connection structure, and the iron surrounding edges on the two iron cores are oppositely connected.

2. The stator core structure of an ultrasonic motor according to claim 1, characterized by: The lengths of the iron surrounding edges on the two iron cores are consistent.

3. The stator core structure of an ultrasonic motor according to claim 1 or 2, characterized by: An arc-shaped recessed position is arranged at the inner side position on the abutting surface of the iron surrounding edge, and an arc-shaped protrusion which is matched with the arc-shaped recessed position is arranged on the abutting surface of the other iron surrounding edge which oppositely connects with the iron surrounding edge.

4. The stator core structure of an ultrasonic motor according to claim 3, characterized by: A limiting recessed groove is arranged at the outer side position on the abutting surface of the iron surrounding edge.

5. The stator core structure of an ultrasonic motor according to claim 1, characterized by: The cross section of the winding skeleton is in the shape of "human" character.

6. The stator core structure of an ultrasonic motor according to claim 1, characterized by: The middle part of the outer surface of the iron core is in the shape of arc-shaped protrusion.

7. The stator core structure of an ultrasonic motor according to claim 6, characterized by: An outer side recessed groove is arranged at the middle position on the outer surface of the iron core.

8. The stator core structure of an ultrasonic motor according to claim 1, characterized by: An inner side recessed groove is arranged at the middle position on the inner surface of the winding skeleton.

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