Double-degree-of-freedom sweeping vibration motor
By designing a double-degree-of-freedom sweeping motor in an electric toothbrush, the combination of sweeping components and telescopic components combined with shaft branches and bearings is solved, and the two-degree-of-freedom work and life extension of the motor is achieved.
Patent Information
- Application Number
- CN202421179661.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-05-27
AI Technical Summary
In existing electric toothbrushes, the motor that achieves dual-degree of freedom of sweeping and telescopic vibration is complex, costly and unstable.
A double-degree-of-freedom sweeping motor is designed. By setting a sweeping and telescoping components in the casing, and using a combination of shaft branches and sliding sleeve bearings or linear bearings, the shaft branches are rotated left and right and up and down telescoping.
The two-degree-of-free operation of the motor is achieved, which extends the motor's life, enhances applicability, and reduces structural complexity and cost.
Smart Images
Figure CN222620808U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motors, in particular to a sweeping vibration motor with double degrees of freedom. Background Art
[0002] Existing electric toothbrushes usually use rotary motors, magnetic levitation motors and sonic motors as driving sources to drive and realize a certain driving mode of the electric toothbrush; when the motor is required to perform dual-degree-of-freedom activities of sweeping vibration and extension and retraction, the method currently mostly adopted is to set up two motors, integrate the two motors together, and realize the functions of sweeping vibration and extension and retraction respectively; however, this structural setting has the problems of complex structure, high cost and structural instability. Utility Model Content
[0003] The utility model aims to provide a double-freedom sweeping vibration motor in view of the above-mentioned deficiencies in the prior art.
[0004] The purpose of the utility model is achieved through the following technical solutions: a double-degree-of-freedom sweeping vibration motor, comprising a housing and an axle; an upper end cover is provided on the top of the housing; a lower end cover is provided on the bottom of the housing; a sweeping vibration component and a telescopic component are provided in the housing along the length direction; the axle passes through the upper end cover, the housing and the lower end cover;
[0005] A first sleeve bearing or a first linear bearing is provided between the shaft branch and the upper end cover; a second sleeve bearing or a second linear bearing is provided between the shaft branch and the lower end cover.
[0006] The utility model is further configured that the sweep vibration assembly includes a first fixed iron core arranged in the housing, a first winding frame arranged on the first fixed iron core, and a first coil group arranged on the first winding frame; the shaft branch is fixed with a first moving iron core; the first moving iron core is provided with a first magnet group; the first magnet group is arranged in the first coil group;
[0007] The telescopic assembly includes a second fixed iron core arranged in the casing, a second winding frame arranged on the second fixed iron core, and a second coil group arranged on the second winding frame; the shaft branch is fixed with a second moving iron core and a third moving iron core; the second moving iron core is provided with a second magnet group; the third moving iron core is provided with a third magnet group; the second magnet group is arranged in the top of the second coil group; the third magnet group is arranged in the bottom of the second coil group.
[0008] The utility model is further configured such that the first fixed iron core is arranged on the top of the second fixed iron core; and a third fixed iron core is arranged on the bottom of the second fixed iron core;
[0009] The third fixed iron core is provided with a third winding frame; the third winding frame is provided with a third coil group; the shaft branch is fixed with a fourth moving iron core and a fifth moving iron core; the fourth moving iron core is provided with a fourth magnet group; the fifth moving iron core is provided with a fifth magnet group; the fourth magnet group is arranged in the top of the third coil group; the fifth magnet group is arranged in the bottom of the third coil group.
[0010] The utility model is further configured such that the first magnet group includes four first magnets; the four first magnets are circumferentially arranged on the outer wall of the first moving iron core; the first coil group includes a first long coil and a second long coil symmetrically arranged on the first winding frame.
[0011] The utility model is further configured such that the tail of the first long coil is connected to the tail of the second long coil.
[0012] The utility model is further configured as follows: the second magnet group includes four second magnets; the four second magnets are circumferentially arranged at equal angles on the outer wall of the second moving iron core; the third magnet group includes four third magnets; the four third magnets are circumferentially arranged at equal angles on the outer wall of the third moving iron core; the second coil group includes a first short coil, a second short coil, a third short coil and a fourth short coil which are circumferentially arranged at equal angles on the second winding frame.
[0013] The utility model is further configured as follows: the second magnet group includes four fourth magnets; the four fourth magnets are circumferentially arranged at equal angles on the outer wall of the fourth moving iron core; the fifth magnet group includes four fifth magnets; the four fifth magnets are circumferentially arranged at equal angles on the outer wall of the fifth moving iron core; the third coil group includes a fifth short coil, a sixth short coil, a seventh short coil and an eighth short coil which are circumferentially arranged at equal angles on the third winding frame.
[0014] The utility model is further configured such that the head of the first short coil is connected to the head of the second short coil; the tail of the second short coil is connected to the tail of the third short coil; and the tail of the fourth short coil is connected to the tail of the first short coil.
[0015] The utility model is further configured such that the head of the fifth short coil is connected to the head of the sixth short coil; the tail of the sixth short coil is connected to the tail of the seventh short coil; and the tail of the eighth short coil is connected to the tail of the fifth short coil.
[0016] The utility model is further configured such that the head of the fourth short coil is connected to the head of the eighth short coil; the head of the third short coil is connected to the head of the seventh short coil.
[0017] The beneficial effects of the utility model are as follows: the utility model arranges a sweeping vibration component in the casing so that the shaft branch can rotate left and right, thereby realizing the sweeping vibration function; secondly, arranges a telescopic component in the casing so that the shaft branch can telescope up and down, thereby realizing the telescopic function; in addition, arranges a sliding bearing or a linear bearing, so that the shaft branch can realize the left and right sweeping vibration while also better realizing the up and down telescopic function, so that the motor can complete two-degree-of-freedom work, thereby extending the life of the motor and enhancing applicability. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a structural schematic diagram of the utility model;
[0019] Figure 2 It is a structural schematic diagram of the utility model from another perspective;
[0020] Figure 3 It is a cross-sectional view of the utility model;
[0021] Figure 4 It is a structural exploded view of the utility model;
[0022] Figure 5 It is a winding schematic diagram of the first coil group of the utility model;
[0023] Figure 6 It is a schematic diagram of the winding of the second coil group and the third coil group of the utility model;
[0024] Wherein: 1, housing; 11, upper end cover; 12, lower end cover; 2, shaft branch; 21, first moving iron core; 22, first magnet group; 23, second moving iron core; 24, second magnet group; 25, third moving iron core; 26, third magnet group; 27, fourth moving iron core; 28, fourth magnet group; 29, fifth moving iron core; 20, fifth magnet group; 3, sweep vibration assembly; 31, first fixed iron core; 32, first winding frame; 33, first long coil; 34, second long coil; 4, telescopic assembly; 41, second fixed iron core; 42, second winding frame; 43, third fixed iron core; 44, third winding frame; 51, first sliding sleeve bearing; 52, second sliding sleeve bearing; 61, first short coil; 62, second short coil; 63, third short coil; 64, fourth short coil; 65, fifth short coil; 66, sixth short coil; 67, seventh short coil; 68, eighth short coil. DETAILED DESCRIPTION
[0025] The utility model is further described in conjunction with the following embodiments.
[0026] Depend on Figures 1 to 6It can be seen that the dual-degree-of-freedom sweeping vibration motor described in this embodiment includes a housing 1 and an axle 2; an upper end cover 11 is provided on the top of the housing 1; a lower end cover 12 is provided on the bottom of the housing 1; a sweeping vibration assembly 3 and a telescopic assembly 4 are provided in the housing 1 along the length direction; the axle 2 is provided through the upper end cover 11, the housing 1 and the lower end cover 12;
[0027] A first sleeve bearing 51 or a first linear bearing is provided between the shaft branch 2 and the upper end cover 11 ; a second sleeve bearing 52 or a second linear bearing is provided between the shaft branch 2 and the lower end cover 12 .
[0028] Specifically, the dual-degree-of-freedom sweeping vibration motor described in this embodiment realizes the sweeping vibration function by arranging a sweeping vibration component 3 in the casing 1, so that the shaft 2 can rotate left and right; secondly, a telescopic component 4 is arranged in the casing 1, so that the shaft 2 can be telescoped up and down, thereby realizing the telescopic function; in addition, by arranging a sliding bearing or a linear bearing, the shaft 2 can realize the left and right sweeping vibration while also better realizing the up and down telescopic function, so that the motor can complete the work of two degrees of freedom, extend the life of the motor, and enhance applicability.
[0029] In the present embodiment, a dual-degree-of-freedom sweeping vibration motor is described. The sweeping vibration assembly 3 includes a first fixed iron core 31 disposed in the housing 1, a first winding frame 32 disposed on the first fixed iron core 31, and a first coil group disposed on the first winding frame 32; the shaft branch 2 is fixedly provided with a first moving iron core 21; the first moving iron core 21 is provided with a first magnet group 22; the first magnet group 22 is disposed in the first coil group;
[0030] The telescopic assembly 4 includes a second fixed iron core 41 arranged in the casing 1, a second winding frame 42 arranged on the second fixed iron core 41, and a second coil group arranged on the second winding frame 42; the shaft branch 2 is fixedly provided with a second moving iron core 23 and a third moving iron core 25; the second moving iron core 23 is provided with a second magnet group 24; the third moving iron core 25 is provided with a third magnet group 26; the second magnet group 24 is arranged in the top of the second coil group; the third magnet group 26 is arranged in the bottom of the second coil group.
[0031] Specifically, in this embodiment, through the above arrangement, currents in different directions are passed through the first coil group, that is, the first moving iron core 21 can drive the shaft branch 2 to rotate forward or reverse, thereby realizing left and right sweep vibration.
[0032] In addition, by passing currents in different directions into the second coil group, the second moving iron core 23 and the third moving iron core 25 can drive the shaft branch 2 to move up and down, thereby realizing the telescopic function.
[0033] In the dual-degree-of-freedom sweeping vibration motor described in this embodiment, the first fixed iron core 31 is arranged on the top of the second fixed iron core 41; and the third fixed iron core 43 is arranged on the bottom of the second fixed iron core 41;
[0034] The third fixed iron core 43 is provided with a third winding frame 44; the third winding frame 44 is provided with a third coil group; the shaft branch 2 is fixedly provided with a fourth moving iron core 27 and a fifth moving iron core 29; the fourth moving iron core 27 is provided with a fourth magnet group 28; the fifth moving iron core 29 is provided with a fifth magnet group 20; the fourth magnet group 28 is provided in the top of the third coil group; the fifth magnet group 20 is provided in the bottom of the third coil group.
[0035] Specifically, through the above-mentioned arrangement, this embodiment allows currents of different directions to flow into the third coil group, so that the fourth moving iron core 27 and the fifth moving iron core 29 can drive the shaft branch 2 to move up and down, thereby realizing the telescopic function; through the above-mentioned arrangement, the telescopic amount of the motor can be increased, thereby increasing the efficiency of the motor.
[0036] In the dual-degree-of-freedom sweeping vibration motor described in this embodiment, the first magnet group 22 includes four first magnets; the four first magnets are circumferentially arranged on the outer wall of the first moving iron core 21; the first coil group includes a first long coil 33 and a second long coil 34 symmetrically arranged on the first winding frame 32. In the dual-degree-of-freedom sweeping vibration motor described in this embodiment, the tail of the first long coil 33 is connected to the tail of the second long coil 34.
[0037] Specifically, through the above-mentioned setting, the first long coil 33 and the second long coil 34 are connected together, so that the shaft branch 2 can be driven in a single-phase manner to realize the left and right sweeping vibration function, and the sweeping frequency can be adjusted between 3-10 Hz, and the sweeping angle can be adjusted between 10-60 degrees.
[0038] In the present embodiment, the second magnet group 24 includes four second magnets; the four second magnets are arranged at equal angles along the circumferential direction on the outer wall of the second moving iron core 23; the third magnet group 26 includes four third magnets; the four third magnets are arranged at equal angles along the circumferential direction on the outer wall of the third moving iron core 25; the second coil group includes a first short coil 61, a second short coil 62, a third short coil 63 and a fourth short coil 64 arranged at equal angles along the circumferential direction on the second winding frame 42. In the present embodiment, the second magnet group 24 includes four fourth magnets; the four fourth magnets are arranged at equal angles along the circumferential direction on the outer wall of the fourth moving iron core 27; the fifth magnet group 20 includes four fifth magnets; the four fifth magnets are arranged at equal angles along the circumferential direction on the outer wall of the fifth moving iron core 29; the third coil group includes a fifth short coil 65, a sixth short coil 66, a seventh short coil 67 and an eighth short coil 68 arranged at equal angles along the circumferential direction on the third winding frame 44. In the dual-degree-of-freedom sweeping vibration motor described in this embodiment, the head of the first short coil 61 is connected to the head of the second short coil 62; the tail of the second short coil 62 is connected to the tail of the third short coil 63; the tail of the fourth short coil 64 is connected to the tail of the first short coil 61. In the dual-degree-of-freedom sweeping vibration motor described in this embodiment, the head of the fifth short coil 65 is connected to the head of the sixth short coil 66; the tail of the sixth short coil 66 is connected to the tail of the seventh short coil 67; the tail of the eighth short coil 68 is connected to the tail of the fifth short coil 65. In the dual-degree-of-freedom sweeping vibration motor described in this embodiment, the head of the fourth short coil 64 is connected to the head of the eighth short coil 68; the head of the third short coil 63 is connected to the head of the seventh short coil 67.
[0039] Specifically, through the above-mentioned arrangement, this embodiment enables the short coils to be connected together, and currents in different directions are continuously passed through one of the short coils, so that the shaft branch 2 can realize the telescopic function; and the upper and lower telescopic frequencies can be adjusted between 3-100 Hz, and the stroke can be adjusted between 1-5 mm.
[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.
Claims
1. A dual-degree-of-freedom sweeping motor, characterized in that: The invention comprises a casing (1) and an axis (2); an upper end cover (11) is provided on the top of the casing (1); a lower end cover (12) is provided on the bottom of the casing (1); a sweeping vibration component (3) and a telescopic component (4) are provided inside the casing (1) along the length direction; the axis (2) is provided through the upper end cover (11), the casing (1) and the lower end cover (12); A first sleeve bearing (51) or a first linear bearing is provided between the shaft branch (2) and the upper end cover (11); and a second sleeve bearing (52) or a second linear bearing is provided between the shaft branch (2) and the lower end cover (12).
2. A dual-degree-of-freedom sweeping vibration motor according to claim 1, characterized in that: The sweeping vibration assembly (3) comprises a first fixed iron core (31) arranged in the housing (1), a first winding frame (32) arranged on the first fixed iron core (31), and a first coil group arranged on the first winding frame (32); the shaft branch (2) is fixedly provided with a first moving iron core (21); the first moving iron core (21) is provided with a first magnet group (22); the first magnet group (22) is arranged in the first coil group; The telescopic assembly (4) comprises a second fixed iron core (41) arranged in the housing (1), a second winding frame (42) arranged on the second fixed iron core (41), and a second coil group arranged on the second winding frame (42); the shaft branch (2) is fixedly provided with a second moving iron core (23) and a third moving iron core (25); the second moving iron core (23) is provided with a second magnet group (24); the third moving iron core (25) is provided with a third magnet group (26); the second magnet group (24) is arranged in the top of the second coil group; the third magnet group (26) is arranged in the bottom of the second coil group.
3. A dual-degree-of-freedom sweeping motor according to claim 2, characterized in that: The first fixed iron core (31) is arranged on the top of the second fixed iron core (41); and a third fixed iron core (43) is arranged on the bottom of the second fixed iron core (41); The third fixed iron core (43) is provided with a third winding frame (44); the third winding frame (44) is provided with a third coil group; the shaft branch (2) is fixedly provided with a fourth moving iron core (27) and a fifth moving iron core (29); the fourth moving iron core (27) is provided with a fourth magnet group (28); the fifth moving iron core (29) is provided with a fifth magnet group (20); the fourth magnet group (28) is provided in the top of the third coil group; the fifth magnet group (20) is provided in the bottom of the third coil group.
4. A dual-degree-of-freedom sweeping vibration motor according to claim 3, characterized in that: The first magnet group (22) comprises four first magnets; the four first magnets are arranged on the outer wall of the first moving iron core (21) along the circumferential direction; the first coil group comprises a first long coil (33) and a second long coil (34) symmetrically arranged on the first winding frame (32).
5. A dual-degree-of-freedom sweeping vibration motor according to claim 4, characterized in that: The tail of the first long coil (33) is connected to the tail of the second long coil (34).
6. The dual-degree-of-freedom sweeping vibration motor according to claim 3, characterized in that: The second magnet group (24) comprises four second magnets; the four second magnets are arranged at equal angles along the circumferential direction on the outer wall of the second moving iron core (23); the third magnet group (26) comprises four third magnets; the four third magnets are arranged at equal angles along the circumferential direction on the outer wall of the third moving iron core (25); the second coil group comprises a first short coil (61), a second short coil (62), a third short coil (63) and a fourth short coil (64) which are arranged at equal angles along the circumferential direction on the second winding frame (42).
7. The dual-degree-of-freedom sweeping vibration motor according to claim 6, characterized in that: The second magnet group (24) comprises four fourth magnets; the four fourth magnets are arranged at equal angles along the circumferential direction on the outer wall of the fourth moving iron core (27); the fifth magnet group (20) comprises four fifth magnets; the four fifth magnets are arranged at equal angles along the circumferential direction on the outer wall of the fifth moving iron core (29); the third coil group comprises a fifth short coil (65), a sixth short coil (66), a seventh short coil (67) and an eighth short coil (68) which are arranged at equal angles along the circumferential direction on the third winding frame (44).
8. The dual-degree-of-freedom sweeping vibration motor according to claim 7, characterized in that: The head of the first short coil (61) is connected to the head of the second short coil (62); the tail of the second short coil (62) is connected to the tail of the third short coil (63); and the tail of the fourth short coil (64) is connected to the tail of the first short coil (61).
9. The dual-degree-of-freedom sweeping vibration motor according to claim 8, characterized in that: The head of the fifth short coil (65) is connected to the head of the sixth short coil (66); the tail of the sixth short coil (66) is connected to the tail of the seventh short coil (67); and the tail of the eighth short coil (68) is connected to the tail of the fifth short coil (65).
10. The dual-degree-of-freedom sweeping vibration motor according to claim 9, characterized in that: The head of the fourth short coil (64) is connected to the head of the eighth short coil (68); the head of the third short coil (63) is connected to the head of the seventh short coil (67).