Driving structure for transmission shaft of electric toothbrush

Abstract

The utility model relates to the technical field of electric toothbrush driving, and discloses a driving structure for a transmission shaft of an electric toothbrush, which comprises a first support and a second support which are detachably connected, the first support is rotatably connected with the transmission shaft, a driving motor is mounted in the second support, an eccentric wheel is sleeved on an output shaft of the driving motor, and the eccentric wheel is connected with the transmission shaft. The transmission shaft is connected with a transmission frame in a sleeved mode, and the driving motor is used for driving the eccentric wheel to rotate so that the transmission frame can drive the transmission shaft to deflect in a reciprocating mode. The eccentric wheel is driven by the driving motor to rotate, so that the transmission shaft is driven by the transmission frame to deflect in a reciprocating manner, the driving structure for the transmission shaft of the electric toothbrush is provided, driving power is provided for a toothbrush head, gearless transmission is realized, and noise of the toothbrush head can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electric toothbrush driving, in particular to a driving structure for an electric toothbrush transmission shaft. Background Art

[0002] As people's living standards improve, they pay more and more attention to oral health. 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, a Chinese utility model with the authorization announcement number CN220025274U discloses an electric toothbrush, including: a toothbrush upper shell, a toothbrush main shell, a toothbrush bottom cover, a shock-absorbing assembly and a driving structure, wherein the toothbrush upper shell is rotatably connected to a brush plate, and a plurality of bristles are installed on the brush plate, the driving structure includes a first mounting frame, a second mounting frame, a driving motor and a transmission mechanism, the driving motor drives the transmission mechanism to move, so that the transmission mechanism drives the brush plate to rotate and reciprocate, and the shock-absorbing assembly includes a first shock-absorbing sleeve and a second shock-absorbing pad, the first shock-absorbing sleeve is sleeved on one end of the driving motor, and the second shock-absorbing pad is installed on one side of the driving motor. However, the above electric toothbrush uses gears for transmission, which is prone to generate loud noise after long-term use; and the structure is relatively complicated.

[0004] Therefore, how to provide a driving structure for the transmission shaft of an electric toothbrush to achieve gearless transmission 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 structure for the transmission shaft of an electric toothbrush to realize gearless transmission.

[0006] To this end, according to the first aspect, an embodiment of the utility model discloses a driving structure for a drive shaft of an electric toothbrush, comprising: a first bracket and a second bracket that are detachably connected, the first bracket being rotatably connected to the drive shaft, a drive motor being installed in the second bracket, an eccentric wheel being sleeved on the output shaft of the drive motor, a transmission frame being sleeved on the transmission shaft, the drive motor being used to drive the eccentric wheel to rotate, so that the transmission frame drives the drive shaft to perform reciprocating oscillating motion.

[0007] The utility model is further configured that the eccentric wheel is provided with an eccentric rod, the transmission frame is provided with a swing groove matched with the eccentric rod, and the eccentric rod abuts against the inner wall of the swing groove.

[0008] The utility model is further configured that the swing groove is configured in a U shape.

[0009] The utility model is further configured that first planes are provided on opposite sides of the transmission shaft, and a second plane corresponding to the first plane is provided in the transmission frame.

[0010] The utility model is further configured such that the eccentric wheel and the eccentric rod are an integrally formed structure.

[0011] The utility model is further configured that one end of the driving motor is sleeved with a shock absorbing sleeve.

[0012] The utility model is further configured such that a detachably connected third bracket is provided on the second bracket, and the third bracket is used for limiting the position of the drive motor and installing it in the second bracket.

[0013] The utility model is further configured that a shock-absorbing pad is provided between the driving motor and the third bracket.

[0014] The utility model is further configured that one side of the transmission shaft is provided with a slot for clamping with an external toothbrush head, and the slot is configured in a V shape.

[0015] The utility model is further configured that a waterproof ring is sleeved on the transmission shaft and is tightly pressed against the inner wall of the first bracket.

[0016] The utility model has the following beneficial effects: the eccentric wheel is driven by a driving motor to rotate, so that the transmission frame drives the transmission shaft to perform reciprocating oscillating motion, thereby providing a driving structure for the electric toothbrush transmission shaft, providing driving power for the toothbrush head, realizing gearless transmission, and reducing its noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 is a three-dimensional structural schematic diagram of a driving structure for an electric toothbrush transmission shaft disclosed in this embodiment;

[0019] Figure 2 is an exploded structural schematic diagram of a driving structure for an electric toothbrush transmission shaft disclosed in this embodiment;

[0020] Figure 3 It is a partial structural schematic diagram of a driving structure for an electric toothbrush transmission shaft disclosed in this embodiment;

[0021] Figure 4 It is a structural schematic diagram of an eccentric wheel in a driving structure for a transmission shaft of an electric toothbrush disclosed in this embodiment;

[0022] Figure 5 It is a three-dimensional structural schematic diagram of a transmission frame in a driving structure for a transmission shaft of an electric toothbrush disclosed in this embodiment;

[0023] Figure 6 It is a schematic diagram of the bottom structure of a middle transmission frame of a driving structure for a transmission shaft of an electric toothbrush disclosed in this embodiment;

[0024] Figure 7 It is a schematic diagram of the three-dimensional structure of a transmission shaft in a driving structure for an electric toothbrush transmission shaft disclosed in this embodiment.

[0025] Figure numerals: 1. first bracket; 2. second bracket; 3. transmission shaft; 31. first plane; 32. slot; 4. driving motor; 5. eccentric wheel; 51. eccentric rod; 6. transmission frame; 61. swing groove; 62. second plane; 63. notch; 7. shock-absorbing sleeve; 8. third bracket; 9. shock-absorbing pad; 10. waterproof ring. DETAILED DESCRIPTION

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] The utility model discloses a driving structure for a transmission shaft of an electric toothbrush. Figure 1-7 As shown, it includes: a detachably connected first bracket 1 and a second bracket 2, the first bracket 1 is rotatably connected to a transmission shaft 3, a driving motor 4 is installed in the second bracket 2, an eccentric wheel 5 is sleeved on the output shaft of the driving motor 4, and a transmission frame 6 is sleeved on the transmission shaft 3. The driving motor 4 is used to drive the eccentric wheel 5 to rotate so that the transmission frame 6 drives the transmission shaft 3 to perform reciprocating oscillating motion. In this embodiment, the first bracket 1 and the second bracket 2 are fastened and connected by screws.

[0031] It should be noted that the eccentric wheel 5 is driven to rotate by the drive motor 4, so that the transmission frame 6 drives the transmission shaft 3 to perform reciprocating oscillating motion, thereby providing a driving structure for the electric toothbrush transmission shaft, providing driving power to the toothbrush head, realizing gearless transmission, and reducing its noise.

[0032] like Figure 4-6 As shown, the eccentric wheel 5 is provided with an eccentric rod 51, the transmission frame 6 is provided with a swing groove 61 adapted to the eccentric rod 51, and the eccentric rod 51 abuts against the inner wall of the swing groove 61. In the specific implementation process, the swing angle of the transmission frame 6 is + / -21 degrees.

[0033] It should be noted that the driving action of the driving motor 4 drives the eccentric wheel 5 to rotate. Since the eccentric rod 51 abuts against the inner wall of the swing groove 61, the eccentric wheel 5 drives the transmission frame 6 to perform reciprocating and oscillating motion, thereby driving the transmission shaft 3 to perform reciprocating and oscillating motion, providing driving power for the rotating brush disc of the toothbrush head, realizing gearless transmission, and reducing noise.

[0034] like Figure 5 and Figure 6 As shown, the swing groove 61 is arranged in a U-shape. In the specific implementation process, a notch 63 is provided on the transmission frame 6 and is arranged adjacent to the swing groove 61. The notch 63 is arranged to facilitate the assembly of the eccentric wheel 5 and the transmission shaft 3.

[0035] It should be noted that, since the swing groove 61 is arranged in a U-shape, the eccentric rod 51 can better drive the transmission frame 6 to perform reciprocating swinging motion.

[0036] like Figure 5-7As shown, first planes 31 are provided on opposite sides of the transmission shaft 3, and a second plane 62 corresponding to the first plane 31 is provided in the transmission frame 6. It should be noted that the arrangement of the first plane 31 and the second plane 62 facilitates the transmission frame 6 to drive the transmission shaft 3 to move and prevents slippage.

[0037] like Figure 3 and Figure 4 As shown, the eccentric wheel 5 and the eccentric rod 51 are an integrally formed structure.

[0038] like Figure 1-3 As shown, one end of the driving motor 4 is sleeved with a shock-absorbing sleeve 7. It should be noted that the shock-absorbing sleeve 7 is made of silicone or EVA material; the setting of the shock-absorbing sleeve 7 facilitates the noise reduction of the driving motor 4.

[0039] like Figure 1-3 As shown, a detachably connected third bracket 8 is provided on the second bracket 2, and the third bracket 8 is used to limit the drive motor 4 and install it in the second bracket 2. In the specific implementation process, the second bracket 2 and the third bracket 8 are fastened and connected by screws.

[0040] like Figure 1-3 As shown, a shock-absorbing pad 9 is arranged between the driving motor 4 and the third bracket 8. It should be noted that the shock-absorbing pad 9 is made of silica gel or EVA material; by setting the shock-absorbing pad 9, the operation of the driving motor 4 can be reduced in noise.

[0041] like Figure 7 As shown, a slot 32 for engaging with an external toothbrush head is provided on one side of the transmission shaft 3, and the slot 32 is arranged in a V shape. It should be noted that the arrangement of the slot 32 facilitates the external toothbrush head to be mounted on the transmission shaft 3 by being engaged with the external toothbrush head.

[0042] like Figure 1 and Figure 2 As shown, a waterproof ring 10 is sleeved on the transmission shaft 3 and is tightly against the inner wall of the first bracket 1. It should be noted that the waterproof ring 10 is made of silicone material, and the transmission shaft 3 and the first bracket 1 are waterproofly sealed by the waterproof ring 10 to prevent water from entering the interior of the electric toothbrush, thereby ensuring the safe use of the electric toothbrush.

[0043] Working principle: The eccentric wheel 5 is driven to rotate by the driving motor 4, so that the transmission frame 6 drives the transmission shaft 3 to perform reciprocating oscillating motion, thereby providing a driving structure for the electric toothbrush transmission shaft, providing driving power to the toothbrush head, realizing gearless transmission, and reducing its noise.

[0044] 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 structure for an electric toothbrush transmission shaft, characterized in that: include: A first bracket (1) and a second bracket (2) are detachably connected, the first bracket (1) being rotatably connected to a transmission shaft (3), a driving motor (4) being installed in the second bracket (2), an eccentric wheel (5) being sleeved on the output shaft of the driving motor (4), a transmission frame (6) being sleeved on the transmission shaft (3), the driving motor (4) being used to drive the eccentric wheel (5) to perform rotational motion, so that the transmission frame (6) drives the transmission shaft (3) to perform reciprocating oscillating motion.

2. The driving structure for the electric toothbrush transmission shaft according to claim 1, characterized in that: The eccentric wheel (5) is provided with an eccentric rod (51), the transmission frame (6) is provided with a swing groove (61) adapted to the eccentric rod (51), and the eccentric rod (51) abuts against the inner wall of the swing groove (61).

3. The driving structure for the electric toothbrush transmission shaft according to claim 2, characterized in that: The swing groove (61) is arranged in a U shape.

4. The driving structure for the electric toothbrush transmission shaft according to claim 2, characterized in that: The transmission shaft (3) is provided with a first plane (31) on opposite sides thereof, and the transmission frame (6) is provided with a second plane (62) corresponding to the first plane (31).

5. The driving structure for the transmission shaft of an electric toothbrush according to any one of claims 2 to 4, characterized in that: The eccentric wheel (5) and the eccentric rod (51) are an integrally formed structure.

6. The driving structure for the electric toothbrush transmission shaft according to claim 1, characterized in that: One end of the driving motor (4) is sleeved with a shock absorbing sleeve (7).

7. The driving structure for the transmission shaft of an electric toothbrush according to claim 1 or 6, characterized in that: A detachably connected third bracket (8) is provided on the second bracket (2), and the third bracket (8) is used to positionally install the drive motor (4) in the second bracket (2).

8. The driving structure for the transmission shaft of an electric toothbrush according to claim 7, characterized in that: A shock-absorbing pad (9) is provided between the driving motor (4) and the third bracket (8).

9. The driving structure for the transmission shaft of an electric toothbrush according to claim 1 or 4, characterized in that: A clamping groove (32) for clamping with an external toothbrush head is provided on one side of the transmission shaft (3), and the clamping groove (32) is arranged in a V shape.

10. The driving structure for the transmission shaft of an electric toothbrush according to claim 1 or 4, characterized in that: The transmission shaft (3) is sleeved with a waterproof ring (10) which is tightly pressed against the inner wall of the first bracket (1).

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