Driving motor and electric toothbrush

Abstract

The utility model relates to the technical field of motors, and discloses a driving motor and an electric toothbrush, the driving motor comprises a motor main body and a motor shaft, the motor main body is used for driving the motor shaft to move, a first mounting groove and a second mounting groove are distributed on the motor shaft along the axial direction, the first mounting groove is used for clamping and matching an external toothbrush head, and the second mounting groove is used for clamping and matching an external toothbrush head. The second mounting groove is used for sleeving a top waterproof ring; the first mounting groove is an annular groove, the cross section of the first mounting groove is V-shaped, a first inclined surface and a second inclined surface which are obliquely arranged are arranged in the first mounting groove, the projection length of the first inclined surface in the axial direction of the motor shaft is smaller than the projection length of the second inclined surface in the axial direction of the motor shaft, and the included angle between the first inclined surface and the second inclined surface is 111 degrees. According to the driving motor provided by the utility model, the first mounting groove is the annular groove, so that the toothbrush head is convenient to clamp and assemble, and the connection stability of the motor shaft and the toothbrush head is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a driving motor and an electric toothbrush. Background Art

[0002] As people's living standards improve, they pay more and more attention to the health of dental cavities. Electric toothbrushes have the advantages of strong cleaning ability, convenience and practicality, and can reduce damage to teeth or gums, and their popularity is growing day by day.

[0003] In the prior art, an electric toothbrush includes a handle and a replaceable toothbrush head. The handle is embedded with a motor shaft for driving the brush head to swing. The toothbrush head needs to be separated from the motor shaft frequently for cleaning or other purposes. However, due to the installation slot structure of the motor shaft, the drive shaft and the toothbrush head are inconvenient to install and the connection is not stable enough.

[0004] Therefore, how to provide a driving motor and an electric toothbrush to facilitate the snap-fit ​​assembly of the toothbrush head and improve the connection stability between the motor shaft and the toothbrush head has become a technical problem that needs to be solved urgently. Utility Model Content

[0005] The technical problem to be solved by the utility model is how to provide a driving motor and an electric toothbrush so as to facilitate the clamping assembly of a toothbrush head and improve the connection stability between the motor shaft and the toothbrush head.

[0006] To this end, according to a first aspect, an embodiment of the utility model discloses a driving motor, comprising: a motor body and a motor shaft, wherein the motor body is used to drive the motor shaft to move, and the motor shaft is provided with a first mounting groove and a second mounting groove along its axial direction, wherein the first mounting groove is used to snap-fit ​​with an external toothbrush head, and the second mounting groove is used to sleeve a top waterproof ring;

[0007] Among them, the first mounting groove is an annular groove, the cross-section of the first mounting groove is V-shaped, and a first inclined surface and a second inclined surface are arranged in the first mounting groove, the projection length of the first inclined surface in the axial direction of the motor shaft is smaller than the projection length of the second inclined surface in the axial direction of the motor shaft, and the angle between the first inclined surface and the second inclined surface is 111 degrees.

[0008] The utility model is further configured that the end of the motor shaft relative to the motor body is provided with a chamfer.

[0009] The utility model is further configured that the chamfer is arranged in an arc shape.

[0010] The utility model is further configured such that a third plane and a fourth inclined plane are provided on the motor shaft, the third plane and the fourth inclined plane are both located at one end of the first mounting groove, and the third plane and the fourth inclined plane are arranged at an angle.

[0011] The utility model is further configured such that the included angle between the third plane and the fourth inclined plane is 149 degrees.

[0012] The utility model is further configured that two connecting wires are installed at the bottom of the motor body, and the connecting wires are used to receive external control signals and electric energy.

[0013] The utility model is further configured such that the second mounting groove is an annular groove.

[0014] The utility model is further configured such that the groove depth of the second installation groove is 0.5 mm.

[0015] The utility model is further configured that the motor shaft is provided with a middle section located between the first mounting groove and the second mounting groove, the middle section is cylindrical, and the outer diameter of the middle section is 4 mm.

[0016] According to a second aspect, an embodiment of the utility model discloses an electric toothbrush, comprising a driving motor as described in the first aspect.

[0017] The utility model has the following beneficial effects: the cross-section of the first mounting groove is set in a V-shape, the projection length of the first inclined surface in the axial direction of the motor shaft is smaller than the projection length of the second inclined surface in the axial direction of the motor shaft, and the angle between the first inclined surface and the second inclined surface is 111 degrees, thereby providing a driving motor. Since the first mounting groove is an annular groove, it is convenient to snap-fit ​​and assemble the toothbrush head, and the connection stability between the motor shaft and the toothbrush head is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is one of the three-dimensional structural schematic diagrams of a driving motor disclosed in this embodiment;

[0020] Figure 2 This is the second schematic diagram of the three-dimensional structure of a driving motor disclosed in this embodiment;

[0021] Figure 3is a schematic diagram of the main structure of a driving motor disclosed in this embodiment;

[0022] Figure 4 It is a schematic diagram of the side structure of a driving motor disclosed in this embodiment.

[0023] Figure numerals: 10, motor body; 11, fifth plane; 20, motor shaft; 21, first mounting groove; 211, first inclined plane; 212, second inclined plane; 22, second mounting groove; 23, chamfer; 24, third plane; 25, fourth inclined plane; 26, middle section. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be indirectly connected through an intermediate medium, it can also be the internal connection of two components, it can be a wireless connection, or it can be a wired connection. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0028] The utility model discloses a driving motor. Figure 1-4As shown, it includes: a motor body 10 and a motor shaft 20, the motor body 10 is used to drive the motor shaft 20 to move, and the motor shaft 20 is provided with a first mounting groove 21 and a second mounting groove 22 along its axial direction, the first mounting groove 21 is used to snap-fit ​​with an external toothbrush head, and the second mounting groove 22 is used to sleeve the top waterproof ring;

[0029] The first mounting groove 21 is an annular groove, the cross section of the first mounting groove 21 is V-shaped, and the first mounting groove 21 is provided with a first inclined surface 211 and a second inclined surface 212 both arranged in an inclined shape, the projection length of the first inclined surface 211 in the axial direction of the motor shaft 20 is less than the projection length of the second inclined surface 212 in the axial direction of the motor shaft 20, and the angle between the first inclined surface 211 and the second inclined surface 212 is 111 degrees. In the specific implementation process, two fifth planes 11 are provided on the outer wall of the motor body 10, and the setting of the fifth plane 11 facilitates the bonding and fixing of the drive motor in the electric toothbrush.

[0030] It should be noted that the cross-section of the first mounting groove 21 is V-shaped, the projection length of the first bevel 211 in the axial direction of the motor shaft 20 is smaller than the projection length of the second bevel 212 in the axial direction of the motor shaft 20, and the angle between the first bevel 211 and the second bevel 212 is 111 degrees, thereby providing a driving motor. Since the first mounting groove 21 is an annular groove, it is convenient to snap-fit ​​and assemble the toothbrush head, and the connection stability between the motor shaft 20 and the toothbrush head is improved.

[0031] like Figure 2 and Figure 3 As shown, the end of the motor shaft 20 relative to the motor body 10 is provided with a chamfer 23 .

[0032] like Figure 1-4 As shown, the chamfer 23 is arranged in an arc shape. It should be noted that, since the chamfer 23 is arranged in an arc shape, the motor shaft 20 can be smoothly inserted into the toothbrush head, and since the first mounting groove 21 is an annular groove, the hook of the toothbrush head can be quickly connected and assembled.

[0033] like Figure 2 and Figure 3 As shown, the motor shaft 20 is provided with a third plane 24 and a fourth inclined surface 25, both of which are located at one end of the first mounting groove 21, and the third plane 24 and the fourth inclined surface 25 are arranged at an angle. It should be noted that, through the arrangement of the third plane 24 and the fourth inclined surface 25, the motor shaft 20 is smoothly clamped and assembled with the toothbrush head, and the third plane 24 is tightly pressed against the inner wall of the toothbrush head.

[0034] like Figure 2 and Figure 3 As shown, the included angle between the third plane 24 and the fourth inclined plane 25 is 149 degrees.

[0035] like Figure 1-4 As shown, two connecting wires are installed at the bottom of the motor body 10, and the connecting wires are used to receive external control signals and electric energy. It should be noted that the drive motor is electrically connected to the external control board through the setting of the connecting wires.

[0036] like Figure 2 and Figure 3 As shown, the second mounting groove 22 is an annular groove. It should be noted that the second mounting groove 22 is provided to facilitate the sleeve connection of the top waterproof ring.

[0037] like Figure 2 and Figure 3 As shown, the groove depth of the second mounting groove 22 is 0.5 mm.

[0038] like Figure 1-4 As shown, the motor shaft 20 is provided with a middle section 26 located between the first mounting groove 21 and the second mounting groove 22 . The middle section 26 is cylindrical and has an outer diameter of 4 mm.

[0039] Working principle: The cross-section of the first mounting groove 21 is set in a V-shape, the projection length of the first inclined surface 211 in the axial direction of the motor shaft 20 is smaller than the projection length of the second inclined surface 212 in the axial direction of the motor shaft 20, and the angle between the first inclined surface 211 and the second inclined surface 212 is 111 degrees, thereby providing a driving motor. Since the first mounting groove 21 is an annular groove, it is convenient to snap-fit ​​and assemble the toothbrush head, and the connection stability between the motor shaft 20 and the toothbrush head is improved.

[0040] The utility model discloses an electric toothbrush, comprising the driving motor as described above. The driving motor provides driving power to drive the toothbrush head to swing, thereby achieving electric teeth cleaning.

[0041] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A driving motor, characterized in that: include: A motor body (10) and a motor shaft (20), wherein the motor body (10) is used to drive the motor shaft (20) to move, and the motor shaft (20) is provided with a first mounting groove (21) and a second mounting groove (22) along its axial direction, wherein the first mounting groove (21) is used to snap-fit ​​with an external toothbrush head, and the second mounting groove (22) is used to sleeve on a top waterproof ring; The first mounting groove (21) is an annular groove, the cross section of the first mounting groove (21) is V-shaped, a first inclined surface (211) and a second inclined surface (212) are arranged in the first mounting groove (21), the projection length of the first inclined surface (211) in the axial direction of the motor shaft (20) is smaller than the projection length of the second inclined surface (212) in the axial direction of the motor shaft (20), and the angle between the first inclined surface (211) and the second inclined surface (212) is 111 degrees.

2. The drive motor according to claim 1, characterized in that: The motor shaft (20) is provided with a chamfer (23) at the end relative to the motor body (10).

3. The drive motor according to claim 2, characterized in that: The chamfer (23) is arranged in an arc shape.

4. The drive motor according to claim 1, characterized in that: The motor shaft (20) is provided with a third plane (24) and a fourth inclined plane (25); the third plane (24) and the fourth inclined plane (25) are both located at one end of the first mounting groove (21); the third plane (24) and the fourth inclined plane (25) are arranged at an angle.

5. The drive motor according to claim 4, characterized in that: The included angle between the third plane (24) and the fourth inclined plane (25) is 149 degrees.

6. The drive motor according to any one of claims 1 to 5, characterized in that: Two connecting wires are installed at the bottom of the motor body (10), and the connecting wires are used to receive external control signals and electric energy.

7. The driving motor according to claim 1, characterized in that: The second mounting groove (22) is an annular groove.

8. The drive motor according to claim 7, characterized in that: The groove depth of the second installation groove (22) is 0.5 mm.

9. The driving motor according to any one of claims 1 to 5, characterized in that: The motor shaft (20) is provided with a middle section (26) located between the first mounting groove (21) and the second mounting groove (22); the middle section (26) is cylindrical, and the outer diameter of the middle section (26) is 4 mm.

10. An electric toothbrush, characterized in that: Comprising a drive motor as described in any one of claims 1-9.

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