Motor with sweeping vibration function

Abstract

The utility model relates to the technical field of motors, in particular to a motor with a sweeping vibration function, which comprises a stator and a rotor. The rotor is rotationally arranged in the stator; a first magnetic arm is arranged at one end of the stator; a second magnetic arm is arranged at the other end of the stator; the first magnetic arm is provided with a first left magnetic tooth and a first right magnetic tooth; the second magnetic arm is provided with a second left magnetic tooth and a second right magnetic tooth; coils are wound on the first magnetic arm and the second magnetic arm; the rotor is provided with a strip-shaped first magnetic steel, a strip-shaped second magnetic steel, a strip-shaped third magnetic steel and a strip-shaped fourth magnetic steel along the length direction. According to the utility model, through cooperation of the first magnetic steel, the second magnetic steel, the third magnetic steel, the fourth magnetic steel, the first left magnetic tooth, the first right magnetic tooth, the second left magnetic tooth and the second right magnetic tooth, the rotor can continuously perform small-amplitude reciprocating vibration while performing large-angle reciprocating swing; therefore, the sweeping vibration action of the human hand during tooth brushing is simulated.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and particularly relates to a motor with a sweeping and vibrating function. Background Art

[0002] Vibrating electric toothbrushes have been widely recognized and loved in the market due to their advantages of small tooth wear and low gum damage. Compared with traditional manual toothbrushes, vibrating electric toothbrushes generate high-frequency vibrations in the direction perpendicular to the length of the brush handle through an internal vibration motor, thereby achieving a more efficient tooth cleaning effect. This high-frequency vibration can effectively remove dental plaque and food residues on the tooth surface while reducing irritation to the gums.

[0003] However, there are still some deficiencies in the existing vibrating electric toothbrushes. Most of the vibrating electric toothbrushes on the market can only achieve high-frequency reciprocating vibrations of the brush head, but cannot simulate the large reciprocating swing around the axis of the motor during manual toothbrushing. This swinging action that simulates manual toothbrushing has a better cleaning effect on teeth and gums in some cases because it can cover more oral areas and is more in line with people's daily toothbrushing habits.

[0004] Therefore, how to achieve a large reciprocating swing of the brush head around the axis of the motor while maintaining high-frequency vibration has become an urgent problem to be solved in the current technical field. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a motor with a sweeping and vibrating function for the above deficiencies in the prior art.

[0006] The purpose of the utility model is achieved through the following technical solutions: A motor with a sweeping and vibrating function includes a stator and a rotor; the rotor is rotatably arranged inside the stator; one end of the stator is provided with a first magnetic arm; the other end of the stator is provided with a second magnetic arm; one side of the first magnetic arm is provided with a first left magnetic tooth, and the other side of the first magnetic arm is provided with a first right magnetic tooth; one side of the second magnetic arm is provided with a second left magnetic tooth, and the other side of the second magnetic arm is provided with a second right magnetic tooth; the rotor is arranged between the first left magnetic tooth, the first right magnetic tooth, the second left magnetic tooth and the second right magnetic tooth; the first magnetic arm and the second magnetic arm are wound with coils;

[0007] The rotor is respectively provided with strip-shaped first magnet, second magnet, third magnet and fourth magnet along the length direction; the first magnet, the second magnet, the third magnet and the fourth magnet are respectively arranged corresponding to the first left magnetic tooth, the first right magnetic tooth, the second left magnetic tooth and the second right magnetic tooth.

[0008] The present utility model is further configured such that the first magnet, the second magnet, the third magnet and the fourth magnet have the same structure; the first magnetic arm and the second magnetic arm have the same structure; the first left magnetic tooth, the first right magnetic tooth, the second left magnetic tooth and the second right magnetic tooth have the same structure.

[0009] The present utility model is further configured such that the cross-sectional shapes of the first magnet, the second magnet, the third magnet and the fourth magnet are all sector-shaped; the cross-sectional shape of the rotor is circular; the first magnet, the second magnet, the third magnet and the fourth magnet are respectively arranged concentrically with the rotor.

[0010] The present utility model is further configured such that the first left magnetic tooth is provided with a first arc surface that cooperates with the first magnet; the first right magnetic tooth is provided with a second arc surface that cooperates with the second magnet; the second left magnetic tooth is provided with a third arc surface that cooperates with the third magnet; the second right magnetic tooth is provided with a fourth arc surface that cooperates with the fourth magnet.

[0011] The present utility model is further configured such that the motor with the sweeping and vibrating functions further includes a first wire frame and a second wire frame; the first wire frame and the second wire frame are respectively arranged at the upper and lower ends of the stator; the coil is wound between the first magnetic arm, the second magnetic arm, the first wire frame and the second wire frame.

[0012] The present utility model is further configured such that the motor with the sweeping and vibrating functions further includes a housing; the first wire frame, the second wire frame, the stator and the rotor are all arranged inside the housing.

[0013] The present utility model is further configured such that a first included angle is formed between the end of the first magnet close to the second magnet and the end of the second magnet close to the first magnet, and between the end of the third magnet close to the fourth magnet and the end of the fourth magnet close to the third magnet; the first included angle is 9 - 20 degrees.

[0014] The present utility model is further configured such that a second included angle is formed between the center line of the first magnet and the center line of the first magnetic arm, between the center line of the second magnet and the center line of the first magnetic arm, between the center line of the third magnet and the center line of the second magnetic arm, and between the center line of the fourth magnet and the center line of the second magnetic arm; the second included angle is 35 - 50 degrees.

[0015] The present utility model is further configured such that a third included angle is formed between the center line of the first left magnetic tooth and the center line of the first magnet, between the center line of the first right magnetic tooth and the center line of the second magnet, between the center line of the second left magnetic tooth and the center line of the third magnet, and between the center line of the second right magnetic tooth and the center line of the fourth magnet; the third included angle is 10 - 20 degrees.

[0016] The present utility model is further configured such that a fourth included angle is formed between the end of the first magnetic steel away from the second magnetic steel and the end of the first left magnetic tooth, between the end of the second magnetic steel away from the first magnetic steel and the end of the first right magnetic tooth, between the end of the third magnetic steel away from the fourth magnetic steel and the end of the second left magnetic tooth, and between the end of the fourth magnetic steel away from the third magnetic steel and the end of the second right magnetic tooth; the fourth included angle is 20 - 25 degrees.

[0017] Advantages of the present utility model: Through the cooperation of the first magnetic steel, the second magnetic steel, the third magnetic steel, the fourth magnetic steel, the first left magnetic tooth, the first right magnetic tooth, the second left magnetic tooth, and the second right magnetic tooth, the present utility model can enable the rotor to perform large - angle reciprocating swings while continuously performing small - amplitude reciprocating vibrations, thereby realizing the sweeping and vibrating actions when simulating manual toothbrushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described with reference to the accompanying drawings. However, the embodiments in the drawings do not constitute any limitation to the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the following drawings.

[0019] Figure 1 is a schematic structural view of the present utility model;

[0020] Figure 2 is a schematic structural view of the present utility model after hiding the housing;

[0021] Figure 3 is an exploded view of the structure of the present utility model;

[0022] Figure 4 is a schematic structural view of the cooperation between the first wire frame, the second wire frame and the stator of the present utility model;

[0023] Figure 5 is an exploded view of the structure of the cooperation between the first wire frame, the second wire frame and the stator of the present utility model;

[0024] Figure 6 is a cross - sectional view of the cooperation between the stator and the rotor of the present utility model;

[0025] Wherein: 1. Stator; 2. Rotor; 21. First magnetic steel; 22. Second magnetic steel; 23. Third magnetic steel; 24. Fourth magnetic steel; 3. First magnetic arm; 31. First left magnetic tooth; 32. First right magnetic tooth; 33. First arc surface; 34. Second arc surface; 4. Second magnetic arm; 41. Second left magnetic tooth; 42. Second right magnetic tooth; 43. Third arc surface; 44. Fourth arc surface; 51. First wire frame; 52. Second wire frame; 6. Housing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The present utility model will be further described in conjunction with the following embodiments.

[0027] As Figures 1 to 6 can be seen, a motor with a sweeping and vibrating function described in this embodiment includes a stator 1 and a rotor 2; the rotor 2 is rotatably arranged inside the stator 1; one end of the stator 1 is provided with a first magnetic arm 3; the other end of the stator 1 is provided with a second magnetic arm 4; one side of the first magnetic arm 3 is provided with a first left magnetic tooth 31, and the other side of the first magnetic arm 3 is provided with a first right magnetic tooth 32; one side of the second magnetic arm 4 is provided with a second left magnetic tooth 41, and the other side of the second magnetic arm 4 is provided with a second right magnetic tooth 42; the rotor 2 is arranged between the first left magnetic tooth 31, the first right magnetic tooth 32, the second left magnetic tooth 41 and the second right magnetic tooth 42; the first magnetic arm 3 and the second magnetic arm 4 are wound with coils.

[0028] The rotor 2 is respectively provided with strip-shaped first magnet 21, second magnet 22, third magnet 23 and fourth magnet 24 along the length direction; the first magnet 21, second magnet 22, third magnet 23 and fourth magnet 24 are respectively arranged corresponding to the first left magnetic tooth 31, the first right magnetic tooth 32, the second left magnetic tooth 41 and the second right magnetic tooth 42.

[0029] Specifically, for the motor with a sweeping and vibrating function described in this embodiment, by passing an alternating current through the coil, the magnetism at the upper and lower ends of the first magnetic arm 3 and the magnetism at the upper and lower ends of the second magnetic arm 4 are continuously changed; in addition, through the cooperation of the first magnet 21, second magnet 22, third magnet 23, fourth magnet 24, the first left magnetic tooth 31, the first right magnetic tooth 32, the second left magnetic tooth 41 and the second right magnetic tooth 42, the rotor 2 can perform large-angle reciprocating swings while continuously performing small-amplitude reciprocating vibrations, so as to realize the sweeping and vibrating actions when simulating manual toothbrushing.

[0030] For a motor with a sweeping and vibrating function described in this embodiment, the first magnet 21, second magnet 22, third magnet 23 and fourth magnet 24 have the same structure; the first magnetic arm 3 and the second magnetic arm 4 have the same structure; the first left magnetic tooth 31, the first right magnetic tooth 32, the second left magnetic tooth 41 and the second right magnetic tooth 42 have the same structure. Through the above settings, the motor as a whole can stably realize the sweeping and vibrating function.

[0031] For a motor with a sweeping and vibrating function described in this embodiment, the cross-sectional shapes of the first magnet 21, second magnet 22, third magnet 23 and fourth magnet 24 are all fan-shaped; the cross-sectional shape of the rotor 2 is circular; the first magnet 21, second magnet 22, third magnet 23 and fourth magnet 24 are respectively concentric with the rotor 2. Through the above settings, the motor as a whole can stably realize the sweeping and vibrating function.

[0032] A motor with a sweeping and vibrating function according to this embodiment, the first left magnetic tooth 31 is provided with a first arc surface 33 that cooperates with the first magnet 21; the first right magnetic tooth 32 is provided with a second arc surface 34 that cooperates with the second magnet 22; the second left magnetic tooth 41 is provided with a third arc surface 43 that cooperates with the third magnet 23; the second right magnetic tooth 42 is provided with a fourth arc surface 44 that cooperates with the fourth magnet 24. Through the above settings, the motor as a whole can stably realize the sweeping and vibrating function.

[0033] A motor with a sweeping and vibrating function according to this embodiment, the motor with a sweeping and vibrating function further includes a first wire frame 51 and a second wire frame 52; the first wire frame 51 and the second wire frame 52 are respectively arranged at the upper and lower ends of the stator 1; the coil is wound between the first magnetic arm 3, the second magnetic arm 4, the first wire frame 51 and the second wire frame 52. Through the above settings, the coil can be stably wound outside the first magnetic arm 3 and outside the second magnetic arm 4.

[0034] A motor with a sweeping and vibrating function according to this embodiment, the motor with a sweeping and vibrating function further includes a housing 6; the first wire frame 51, the second wire frame 52, the stator 1 and the rotor 2 are all arranged inside the housing 6. Through the above settings, the interior of the motor can be protected.

[0035] A motor with a sweeping and vibrating function according to this embodiment, a first included angle α1 is formed between the end of the first magnet 21 close to the second magnet 22 and the end of the second magnet 22 close to the first magnet 21, and between the end of the third magnet 23 close to the fourth magnet 24 and the end of the fourth magnet 24 close to the third magnet 23; the first included angle α1 is 9-20 degrees.

[0036] Specifically, when the electric toothbrush head is not powered on, it is required that the bristles on the brush head face the fuselage, which requires that the motor has a large self-suction force when not powered on; if the angle of the first included angle α1 is too large, although it is beneficial to increase the sweeping angle, it will affect the vibration force; therefore, in this embodiment, by setting the first included angle α1 to 9-20 degrees, while ensuring the vibration force, the motor has sufficient self-suction force.

[0037] A motor with a sweeping and vibrating function according to this embodiment, a second included angle α2 is formed between the center line of the first magnet 21 and the center line of the first magnetic arm 3, between the center line of the second magnet 22 and the center line of the first magnetic arm 3, between the center line of the third magnet 23 and the center line of the second magnetic arm 4, and between the center line of the fourth magnet 24 and the center line of the second magnetic arm 4; the second included angle α2 is 35-50 degrees.

[0038] Specifically, the larger the value of the second included angle α2, the larger the swing angle of the rotor 2 during sweeping and swinging. However, due to an overly large second included angle α2, the torque between the first left magnetic tooth 31 and the first right magnetic tooth 32, as well as between the second left magnetic tooth 41 and the second right magnetic tooth 42, will be affected, thereby reducing the intensity and frequency of vibration. Therefore, in this embodiment, by setting the second included angle α2 to 35 - 50 degrees, it is possible to ensure the swing angle of the rotor 2 during sweeping and swinging while ensuring the intensity and frequency of the vibration of the rotor 2.

[0039] For a motor with a sweeping and vibrating function described in this embodiment, a third included angle α3 is formed between the center line of the first left magnetic tooth 31 and the center line of the first permanent magnet 21, between the center line of the first right magnetic tooth 32 and the center line of the second permanent magnet 22, between the center line of the second left magnetic tooth 41 and the center line of the third permanent magnet 23, and between the center line of the second right magnetic tooth 42 and the center line of the fourth permanent magnet 24; the third included angle α3 is 10 - 20 degrees.

[0040] Specifically, the third included angle α3 determines the size of the self - attracting surface between the rotor 2 and the stator 1. The smaller the third included angle α3, the greater the self - attracting force and the greater the force for the rotor 2 to return to its original position, but it will affect the swinging angle of rotation. Therefore, in this embodiment, by setting the second included angle α3 to 10 - 20 degrees, it is possible to ensure the self - attracting force between the rotor 2 and the stator 1 while ensuring the swinging angle of the rotor 2 during rotation.

[0041] For a motor with a sweeping and vibrating function described in this embodiment, a fourth included angle α4 is formed between the end of the first permanent magnet 21 far from the second permanent magnet 22 and the end of the first left magnetic tooth 31, between the end of the second permanent magnet 22 far from the first permanent magnet 21 and the end of the first right magnetic tooth 32, between the end of the third permanent magnet 23 far from the fourth permanent magnet 24 and the end of the second left magnetic tooth 41, and between the end of the fourth permanent magnet 24 far from the third permanent magnet 23 and the end of the second right magnetic tooth 42; the fourth included angle α4 is 20 - 25 degrees.

[0042] Specifically, theoretically, the rotor 2 can rotate through the fourth central angle α4. However, due to the existence of the tooth - groove torque between the first left magnetic tooth 31 and the first right magnetic tooth 32, as well as between the second left magnetic tooth 41 and the second right magnetic tooth 42, the actual rotation angle will be less than α4. And the fourth central angle α4 affects the size of the self - attracting force. Therefore, in this embodiment, the fourth central angle α4 is set to 20 - 25 degrees.

[0043] Through the settings of the first included angle α1, the second included angle α2, the third included angle α3, and the fourth included angle α4 in this embodiment, it is possible to enable the rotor 2 to perform large - angle reciprocating swings while continuously performing small - amplitude reciprocating vibrations, thereby realizing the sweeping and vibrating action when simulating manual toothbrushing.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than limiting the protection scope of the present utility model. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present utility model.

Claims

1. A motor with a sweeping vibration function, characterized in that: The invention comprises a stator (1) and a rotor (2); the rotor (2) is rotatably arranged in the stator (1); a first magnetic arm (3) is arranged at one end of the stator (1); a second magnetic arm (4) is arranged at the other end of the stator (1); a first left magnetic tooth (31) is arranged on one side of the first magnetic arm (3), and a first right magnetic tooth (32) is arranged on the other side of the first magnetic arm (3); a second left magnetic tooth (41) is arranged on one side of the second magnetic arm (4), and a second right magnetic tooth (42) is arranged on the other side of the second magnetic arm (4); the rotor (2) is arranged between the first left magnetic tooth (31), the first right magnetic tooth (32), the second left magnetic tooth (41) and the second right magnetic tooth (42); a coil is wound around the first magnetic arm (3) and the second magnetic arm (4); The rotor (2) is provided with a first magnetic steel (21), a second magnetic steel (22), a third magnetic steel (23) and a fourth magnetic steel (24) in the shape of a bar along the length direction; the first magnetic steel (21), the second magnetic steel (22), the third magnetic steel (23) and the fourth magnetic steel (24) are respectively arranged corresponding to the first left magnetic tooth (31), the first right magnetic tooth (32), the second left magnetic tooth (41) and the second right magnetic tooth (42).

2. The motor with sweep vibration function according to claim 1, characterized in that: The first magnetic steel (21), the second magnetic steel (22), the third magnetic steel (23) and the fourth magnetic steel (24) have the same structure; the first magnetic arm (3) and the second magnetic arm (4) have the same structure; the first left magnetic tooth (31), the first right magnetic tooth (32), the second left magnetic tooth (41) and the second right magnetic tooth (42) have the same structure.

3. The motor with sweep vibration function according to claim 2, characterized in that: The cross-sectional shapes of the first magnetic steel (21), the second magnetic steel (22), the third magnetic steel (23) and the fourth magnetic steel (24) are all sector-shaped; the cross-sectional shape of the rotor (2) is circular; the first magnetic steel (21), the second magnetic steel (22), the third magnetic steel (23) and the fourth magnetic steel (24) are respectively arranged cocentrically with the rotor (2).

4. The motor with sweep vibration function according to claim 3, characterized in that: The first left magnetic tooth (31) is provided with a first arcuate surface (33) cooperating with the first magnetic steel (21); the first right magnetic tooth (32) is provided with a second arcuate surface (34) cooperating with the second magnetic steel (22); the second left magnetic tooth (41) is provided with a third arcuate surface (43) cooperating with the third magnetic steel (23); the second right magnetic tooth (42) is provided with a fourth arcuate surface (44) cooperating with the fourth magnetic steel (24).

5. The motor with sweep vibration function according to claim 1, characterized in that: The motor with a sweeping vibration function further comprises a first bobbin (51) and a second bobbin (52); the first bobbin (51) and the second bobbin (52) are respectively arranged at the upper and lower ends of the stator (1); and the coil is wound between the first magnetic arm (3), the second magnetic arm (4), the first bobbin (51) and the second bobbin (52).

6. The motor with sweeping vibration function according to claim 5, characterized in that: The motor with a sweeping vibration function further comprises a housing (6); the first wire frame (51), the second wire frame (52), the stator (1) and the rotor (2) are all arranged in the housing (6).

7. The motor with sweeping vibration function according to claim 4, characterized in that: A first angle is formed between an end of the first magnetic steel (21) close to the second magnetic steel (22) and an end of the second magnetic steel (22) close to the first magnetic steel (21), and between an end of the third magnetic steel (23) close to the fourth magnetic steel (24) and an end of the fourth magnetic steel (24) close to the third magnetic steel (23); the first angle is 9-20 degrees.

8. The motor with sweep vibration function according to claim 4, characterized in that: A second angle is formed between the center line of the first magnetic steel (21) and the center line of the first magnetic arm (3), between the center line of the second magnetic steel (22) and the center line of the first magnetic arm (3), between the center line of the third magnetic steel (23) and the center line of the second magnetic arm (4), and between the center line of the fourth magnetic steel (24) and the center line of the second magnetic arm (4); the second angle is 35-50 degrees.

9. The motor with sweeping vibration function according to claim 4, characterized in that: A third angle is formed between the center line of the first left magnetic tooth (31) and the center line of the first magnetic steel (21), between the center line of the first right magnetic tooth (32) and the center line of the second magnetic steel (22), between the center line of the second left magnetic tooth (41) and the center line of the third magnetic steel (23), and between the center line of the second right magnetic tooth (42) and the center line of the fourth magnetic steel (24); the third angle is 10-20 degrees.

10. The motor with sweep vibration function according to claim 4, characterized in that: A fourth angle is formed between the end of the first magnetic steel (21) away from the second magnetic steel (22) and the end of the first left magnetic tooth (31), between the end of the second magnetic steel (22) away from the first magnetic steel (21) and the end of the first right magnetic tooth (32), between the end of the third magnetic steel (23) away from the fourth magnetic steel (24) and the end of the second left magnetic tooth (41), and between the end of the fourth magnetic steel (24) away from the third magnetic steel (23) and the end of the second right magnetic tooth (42); the fourth angle is 20-25 degrees.

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