Sweep vibration brushless motor

Abstract

The utility model discloses a sweeping vibration brushless motor, which relates to the technical field of brushless motors, and comprises a shell cylinder, and a fixed circular plate is fixedly arranged at the end part of the shell cylinder; the plurality of stator iron cores are all arranged in the shell cylinder, and coils are wound on the stator iron cores; and the plurality of magnet columns are arranged in the stator iron core at equal intervals. According to the brushless motor for sweeping vibration, when the coil wound on the stator core is electrified, the stator core generates a rotating magnetic field to further drive the rotor core and the output shaft to rotate, and the control assembly is additionally arranged, and the Hall plate is arranged below the positioning magnet, so that the rotor core can be driven to rotate. The magnetic field of the positioning magnet can influence the motion trail of charge carriers in the Hall element, so that the Hall element generates voltage signal output, the magnetic pole position of the rotor iron core is conveniently detected, a position signal is fed back to the electronic controller, deflection can be performed according to a specified angle, and the structural design is humanized.

Description

Technical Field

[0001] The utility model relates to the technical field of brushless motors, in particular to a sweeping brushless motor. Background Art

[0002] A brushless motor is a motor that uses brushless motor technology to achieve vibration. Compared with traditional brushed motors, brushless motors have higher efficiency, lower noise and longer service life. The working principle of a brushless motor is similar to that of a traditional brushed DC motor, but it does not have brushes and commutators. Instead, it uses a built-in electronic controller to achieve current commutation. This design allows the brushless motor to run at a higher speed and reduces the problems of friction and spark generation. A brushless motor usually consists of three coils spaced 120 degrees apart from each other. These coils interact with the external drive signal to generate a rotating magnetic field, thereby driving the motor to rotate. By adjusting the voltage and frequency, the vibration frequency and intensity of the motor can be changed. Brushless motors are widely used in many application fields, especially in personal care products such as electric toothbrushes, facial cleansers, massagers, etc.

[0003] There are many different electric toothbrushes on the market, and their functions and driving methods are also different, but the current mainstream driving method is still based on sonic motors. The most direct factor affecting the cleaning effect of an electric toothbrush is the motor. The principle of the sonic motor is to drive the brush head to swing through high-frequency vibrations to clean teeth, but its vibration amplitude is limited, and its torque is small, so the actual force acting on the brush head is even smaller, which greatly reduces the cleaning ability of the toothbrush, so it needs to be improved. Utility Model Content

[0004] The utility model aims to provide a sweeping brushless motor to solve the problems raised in the above background technology.

[0005] In order to solve the above problems, the technical solutions adopted by the utility model are as follows:

[0006] A sweeping brushless motor, comprising

[0007] An outer shell cylinder, a fixed circular plate is fixedly mounted on the end of the outer shell cylinder;

[0008] A stator core, wherein a plurality of stator cores are arranged inside the outer shell cylinder, and a coil is wound around the stator core;

[0009] Magnet columns, a plurality of magnet columns are arranged at equal intervals inside the stator core;

[0010] The rotor core is arranged inside the magnet column, and an output shaft is fixedly installed inside the rotor core. The rotor core drives the output shaft to deflect through the magnetic field;

[0011] A mounting seat, the mounting seat is mounted inside the outer shell cylinder by fixing screws;

[0012] A limiting copper sleeve, which is arranged outside the output shaft;

[0013] A control component is arranged below the mounting seat and is used to monitor the rotation angle of the output shaft and perform reversing.

[0014] Preferably, a mounting circular hole is provided on the side wall of the fixed circular plate, a first bearing is fixedly installed inside the mounting circular hole, and the output shaft is movably arranged inside the first bearing.

[0015] Preferably, a second bearing is provided inside the mounting seat, and one end of the output shaft passes through the limiting copper sleeve and the second bearing in sequence, penetrates the inner wall of the mounting seat and extends to one side outside the mounting seat.

[0016] Preferably, the control component includes a magnet fixing seat, a positioning magnet and a Hall plate, the upper wall of the magnet fixing seat is fixedly connected to the bottom wall of the mounting seat, the positioning magnet is fixedly arranged in the magnet fixing seat, the Hall plate is arranged below the positioning magnet and the output shaft, and the Hall plate is fixedly installed at the bottom end of the outer shell cylinder.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] When the coil wound on the stator core is energized, the stator core generates a rotating magnetic field, which further drives the rotor core and the output shaft to rotate. The Hall plate is arranged below the positioning magnet by adding a control component. The magnetic field of the positioning magnet affects the motion trajectory of the charge carriers inside the Hall element, causing the Hall element to generate a voltage signal output, which facilitates the detection of the magnetic pole position of the rotor core and feeds back the position signal to the electronic controller. The deflection can be performed at a specified angle, and the structural design is user-friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall external structure of a sweeping brushless motor;

[0020] Figure 2 It is a schematic diagram of the structure of a sweeping brushless motor from a first perspective;

[0021] Figure 3 A sweeping brushless motor Figure 2 Schematic diagram of the AA section structure;

[0022] Figure 4 The exploded structure diagram of a sweeping brushless motor.

[0023] In the figure: 1. outer shell cylinder; 2. fixed circular plate; 3. stator core; 4. magnet column; 5. rotor core; 6. output shaft; 7. first bearing; 8. mounting seat; 9. limiting copper sleeve; 10. second bearing; 11. magnet fixing seat; 12. positioning magnet; 13. Hall plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example:

[0026] See also Figure 1-Figure 4 As shown, the utility model is a sweeping brushless motor, comprising

[0027] The outer shell cylinder 1 has a fixed circular plate 2 fixedly mounted on the end of the outer shell cylinder 1;

[0028] A stator core 3, wherein a plurality of stator cores 3 are arranged inside the outer shell cylinder 1, and a coil is wound around the stator core 3;

[0029] A plurality of magnet columns 4 are arranged at equal intervals inside the stator core 3;

[0030] The rotor core 5 is arranged inside the magnet column 4, and an output shaft 6 is fixedly installed inside the rotor core 5. The rotor core 5 drives the output shaft 6 to deflect through the magnetic field;

[0031] A mounting seat 8, the mounting seat 8 is mounted inside the outer shell cylinder 1 by fixing screws;

[0032] A limiting copper sleeve 9, which is arranged outside the output shaft 6;

[0033] The control component is arranged below the mounting seat 8 and is used to monitor the rotation angle of the output shaft 6 and perform reversing.

[0034] A mounting circular hole is provided on the side wall of the fixed circular plate 2 , a first bearing 7 is fixedly installed inside the mounting circular hole, and the output shaft 6 is movably arranged inside the first bearing 7 .

[0035] A second bearing 10 is provided inside the mounting seat 8 , and one end of the output shaft 6 passes through the limiting copper sleeve 9 and the second bearing 10 in sequence, penetrates the inner wall of the mounting seat 8 and extends to one side outside the mounting seat 8 .

[0036] The control component includes a magnet fixing seat 11, a positioning magnet 12 and a Hall plate 13. The upper wall of the magnet fixing seat 11 is fixedly connected to the bottom wall of the mounting seat 8. The positioning magnet 12 is fixedly arranged in the magnet fixing seat 11. The Hall plate 13 is arranged below the positioning magnet 12 and the output shaft 6. The Hall plate 13 is fixedly installed at the bottom end of the outer shell cylinder 1.

[0037] As can be seen from the above, when the coil wound on the stator core 3 is energized, the stator core 3 generates a rotating magnetic field, which further drives the rotor core 5 and the output shaft 6 to rotate. Among them, by adding a control component, the Hall plate 13 is arranged below the positioning magnet 12. The magnetic field of the positioning magnet 12 will affect the movement trajectory of the charge carriers inside the Hall element, causing the Hall element to generate a voltage signal output, which is then convenient for detecting the magnetic pole position of the rotor core 5, and feeding back the position signal to the electronic controller, which can be deflected according to a specified angle;

[0038] The utility model can be used with a smart app for control, and even the vibration angle, swing amplitude and swing speed can be customized. In addition, the motor can be equipped with a PID dynamic compensation algorithm, which can make dynamic compensation in time according to the force of the brush head. It will not reduce the frequency because the brush head is pressed hard and encounters obstacles, and can keep the contact surface between the bristles and the teeth uniform and stable. This design not only enhances the cleaning power, but also greatly protects the teeth and gums from damage, and has a strong application prospect.

[0039] The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0040] In the description of the present utility model, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. The meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0044] In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other.

[0045] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sweeping brushless motor, characterized in that: include An outer shell cylinder (1), wherein a fixed circular plate (2) is fixedly mounted on the end of the outer shell cylinder (1); A stator core (3), wherein a plurality of the stator cores (3) are arranged inside the outer shell cylinder (1), and a coil is wound around the stator core (3); Magnet columns (4), a plurality of magnet columns (4) are arranged at equal intervals inside the stator core (3); A rotor core (5), wherein the rotor core (5) is arranged inside the magnet column (4), and an output shaft (6) is fixedly installed inside the rotor core (5), and the rotor core (5) drives the output shaft (6) to deflect through the action of the magnetic field; A mounting seat (8), wherein the mounting seat (8) is mounted inside the outer shell cylinder (1) by means of fixing screws; A limiting copper sleeve (9), wherein the limiting copper sleeve (9) is arranged outside the output shaft (6); A control component is arranged below the mounting seat (8) and is used to monitor the rotation angle of the output shaft (6) and perform reversing.

2. A sweeping brushless motor according to claim 1, characterized in that: A mounting circular hole is provided on the side wall of the fixed circular plate (2), a first bearing (7) is fixedly mounted inside the mounting circular hole, and the output shaft (6) is movably arranged inside the first bearing (7).

3. The sweeping brushless motor according to claim 1, characterized in that: A second bearing (10) is provided inside the mounting seat (8), and one end of the output shaft (6) passes through the limiting copper sleeve (9) and the second bearing (10) in sequence, penetrates the inner wall of the mounting seat (8) and extends to the outer side of the mounting seat (8).

4. The sweeping brushless motor according to claim 3, characterized in that: The control component comprises a magnet fixing seat (11), a positioning magnet (12) and a Hall plate (13); the upper wall of the magnet fixing seat (11) is fixedly connected to the bottom wall of the mounting seat (8); the positioning magnet (12) is fixedly arranged in the magnet fixing seat (11); the Hall plate (13) is arranged below the positioning magnet (12) and the output shaft (6); and the Hall plate (13) is fixedly installed at the bottom end of the outer shell cylinder (1).

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