Wide-swing toothbrush sound wave motor structure

Abstract

The utility model belongs to the technical field of electric toothbrushes, and particularly belongs to a wide-swing toothbrush sound wave motor structure which comprises a shell and a rotor assembly arranged in the shell. The rotor assembly comprises a rotor shaft, a rotor iron core and a stop sheet; the motor further comprises a sine wave driving device, the sine wave driving device is used for increasing the single-side swing amplitude of the rotor shaft, the sine wave driving device is additionally arranged in the motor, the single-side swing amplitude is increased, and the left-right wide-amplitude sweeping function can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of electric toothbrush, specifically belongs to a wide amplitude toothbrush sound wave motor structure. BACKGROUND

[0002] Toothbrush is a brush for cleaning teeth, is the necessity of people's life, along with the development of science and technology, electric toothbrush as the new toothbrush form appears. Investigation shows that electric toothbrush compared with ordinary toothbrush, more scientific and effective, can remove dental plaque, reduce gingivitis, periodontal disease and gingival bleeding and other oral diseases, and thus increasingly popular among people.

[0003] At present, the electric toothbrush mainly takes vibration principle, this kind of electric toothbrush makes the brush head produce high-frequency vibration through the rapid back-and-forth rotation of the motor core, instantaneously decomposes toothpaste into fine foam, deeply cleans the interdental space;At the same time, the vibration of the bristles can promote blood circulation in the oral cavity, and has a massage effect on the gingival tissue.

[0004] At present, the motor of this kind of toothbrush generally includes a housing and a rotor assembly and a stator assembly arranged in the housing, the rotor assembly includes a rotor shaft arranged in the stator assembly, the rotor shaft includes a rotor shaft, a magnet holder, four magnets, a stop piece and a fixing block, wherein the rotor shaft, the magnet holder, the stop piece and the fixing block are detachably connected in sequence, the number of magnets is four, and the four magnets are arranged at the four corners of the magnet holder, this structure uses four magnets, not only the material cost is high, but also the operation is complicated when assembling the parts, the assembly time is long, and it is difficult to bring good economic benefits for enterprises.

[0005] Patent application No. 202223035576.0 discloses that one magnet is used, and two magnetic conductive sheets are used to constrain the magnet, and the magnetic conductive sheets can make the magnetic field act well, avoid magnetic field attenuation, compared with the original way of arranging one magnet at each corner of the magnet holder, this structure saves material cost, and is more convenient to assemble, can shorten the assembly time, and thus brings good economic benefits for enterprises.

[0006] The existing product is generally square wave driven, and single-side swinging is realized by switching the positive and negative poles of the coil, but the swinging amplitude is small, and only vibration function can be realized. UTILITY MODEL CONTENTS

[0007] To solve the problems mentioned in the background art, a sine wave driving device is added in the motor, which increases the single-side swinging amplitude and realizes the function of left-right wide amplitude sweeping.

[0008] The technical solution of the utility model is: a toothbrush sonic motor structure with a wide swing amplitude, comprising a shell and a rotor assembly arranged in the shell; the rotor assembly comprises a rotor shaft, a rotor core and a stop plate; and also comprises a sinusoidal wave drive device, which is used to increase the unilateral swing amplitude of the rotor shaft.

[0009] Preferably, the rotor shaft is clamped on the rotating shaft, an end cover is clamped on one side of the shell, the end of the rotating shaft close to the end cover is inserted into the inside of the shaft sleeve, and a bearing is provided between the shaft sleeve and the end cover; the rotor core is fixedly inserted into the rotating shaft; the stopper is fixedly inserted into the rotating shaft and is located on one side of the rotor shaft; a coil is wound around the outside of the rotor core; a plurality of magnets are abutted against the circumference of the rotor core; both ends of the coil pass through the end cover and are welded to the sinusoidal wave drive device.

[0010] Preferably, a bearing is provided on a side of the rotating shaft close to the housing, and the bearing is located inside the housing and is clamped to the rotor shaft.

[0011] Preferably, a silicon steel sheet is provided between the magnetic steel and the housing, and two sides of the silicon steel sheet are respectively in contact with the magnetic steel and the housing.

[0012] Preferably, the magnetic steel is in contact between the housing and the rotor core, and silicon steel sheets are provided on the outside of the housing.

[0013] Preferably, a positioning column is provided on the side of the end cover away from the shell, and the positioning column plays a role in positioning the accessories.

[0014] Preferably, a cutout is provided at one end of the rotor shaft away from the housing, and the cutout is used to engage with the mating part to drive the mating part to rotate synchronously; a locking groove is provided in the middle of the rotor shaft, and the locking groove is used to clamp and fix the mating part.

[0015] Compared with the prior art, the utility model provides a toothbrush sonic motor structure with a wide swing amplitude, which has the beneficial effect of adding a sine wave drive device in the motor to increase the unilateral swing amplitude and realize the function of wide left and right sweeping. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Fig. 1 It is a cross-sectional view of an embodiment of the present utility model.

[0018] Fig. 2 It is a three-dimensional diagram of an embodiment of the present utility model.

[0019] Fig. 3The cross section view of the silicon steel sheet arranged outside the shell of the embodiment of the utility model.

[0020] Reference signs

[0021] 1-shell; 2-rotor assembly; 21-rotor shaft; 211-cutout; 212-detent slot; 22-rotor core; 23-stop piece; 24-sine wave driving device; 25-rotating shaft; 26-shaft sleeve; 27-bearing; 28-coil; 29-magnetic steel; 3-end cover; 31-positioning column; 4-silicon steel sheet; DETAILED DESCRIPTION

[0022] The technical solutions of the utility model will be clearly and completely described below in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments.

[0023] The components of the embodiments of the utility model generally described and shown in the drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model.

[0024] Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0025] In the description of the utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the claimed utility model. The device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0026] It should be noted that the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. In this specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0027] AsFigs. 1-3 As shown in the figure, it comprises a shell 1 and a rotor assembly 2 arranged in the shell 1; the rotor assembly 2 comprises a rotor shaft 21, a rotor core 22 and a stop sheet 23; it also comprises a sine wave driving device 24 for increasing the single-side swing amplitude of the rotor shaft 21; the sine wave driving device 24 increases the single-side swing amplitude, and further, the single-side swing amplitude can reach 33 degrees, realizing the function of left and right wide amplitude sweeping.

[0028] The rotor shaft 21 is clamped on a rotating shaft 25, one side of the shell 1 is clamped with an end cover 3, one end of the rotating shaft 25 close to the end cover 3 is inserted into the inside of a shaft sleeve 26, and a bearing 27 is arranged between the shaft sleeve 26 and the end cover 3; one side of the rotating shaft 25 close to the shell 1 is provided with a bearing 27, the bearing 27 is located in the shell 1 and clamps the rotor shaft 21; the rotor core 22 is fixedly inserted into the rotating shaft 25; the stop sheet 23 is fixedly inserted into the rotating shaft 25 and located on one side of the rotor shaft 21; a coil 28 is wound on the outside of the rotor core 22; a plurality of magnetic steels 29 abut on the circumferential side of the rotor core 22; the two ends of the coil 28 penetrate through the end cover 3 and are welded on the sine wave driving device 24.

[0029] As shown in the figure, Fig. 1 The magnetic steel 29 and the shell 1 are provided with a silicon steel sheet 4, and the two sides of the silicon steel sheet 4 abut on the magnetic steel 29 and the shell 1 respectively; as shown in the figure, Fig. 3 The magnetic steel 29 abuts between the shell 1 and the rotor core, and the outside of the shell 1 is provided with a silicon steel sheet 4.

[0030] As shown in the figure, Figs. 1-3 The end cover 3 is provided with a positioning column 31 away from the shell 1, which plays a role of positioning the matched parts; one end of the rotor shaft 21 away from the shell 1 is provided with a notch 211, which is used for embedding the matched parts and driving the matched parts to rotate synchronously; the middle part of the rotor shaft 21 is provided with a clamping groove 212, which is used for clamping and fixing the matched parts.

[0031] In the description of the utility model, it needs to be explained that, unless there is definite stipulation and limitation, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixed connection, also can be detachable connection, or integrally connected, it can be mechanical connection, also can be electrical connection, it can be directly connected, also can be indirectly connected through intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

Claims

1. A wide-swing toothbrush sonic motor structure, characterized by: It includes a shell and a rotor assembly arranged in the shell; the rotor assembly includes a rotor shaft, a rotor core and a stop plate; and also includes a sine wave drive device, which is used to increase the unilateral swing amplitude of the rotor shaft.

2. A wide-swing toothbrush sonic motor structure as claimed in claim 1, characterized in that: The rotor shaft is clamped on the rotating shaft, an end cover is clamped on one side of the shell, and the end of the rotating shaft close to the end cover is inserted into the inside of the shaft sleeve, and a bearing is provided between the shaft sleeve and the end cover; the rotor core is fixedly inserted into the rotating shaft; the stopper is fixedly inserted into the rotating shaft and is located on one side of the rotor shaft; a coil is wound around the outside of the rotor core; a plurality of magnets are abutted against the circumference of the rotor core; both ends of the coil pass through the end cover and are welded to the sinusoidal wave drive device.

3. A wide-swing toothbrush sonic motor structure as claimed in claim 2, characterized in that: A bearing is provided on one side of the rotating shaft close to the housing. The bearing is located in the housing and is clamped to the rotor shaft.

4. A wide-swing toothbrush sonic motor structure as claimed in claim 2, characterized in that: A silicon steel sheet is provided between the magnetic steel and the shell, and two sides of the silicon steel sheet are respectively in contact with the magnetic steel and the shell.

5. The wide-swing toothbrush sonic motor structure according to claim 2, characterized in that: The magnetic steel is in contact between the housing and the rotor core, and silicon steel sheets are provided on the outside of the housing.

6. A wide-swing toothbrush sonic motor structure as claimed in claim 2, characterized in that: A positioning column is provided on the side of the end cover away from the shell, and the positioning column plays a role in positioning the accessories.

7. The wide-swing toothbrush sonic motor structure according to claim 1, characterized in that: The rotor shaft is provided with a cutout at one end away from the housing, and the cutout is used to engage with the mating part to drive the mating part to rotate synchronously; the middle of the rotor shaft is provided with a clamping groove, and the clamping groove is used to clamp and fix the mating part.

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