Electric toothbrush transmission device

Abstract

An electric toothbrush transmission device relates to the technical field of electric toothbrushes. Comprising transmission motors, transmission wheels, rotating wheels and transmission shafts, the transmission wheel comprises a connecting wheel, an eccentric wheel and an extension shaft which are fixedly connected in sequence; a vertical through groove is formed in one side of the rotating wheel, and a swing shaft is arranged on the other side of the rotating wheel; the transmission motor is started, the rotating shaft of the transmission motor rotates, the connecting wheel fixedly connected with the rotating shaft rotates and sequentially passes through the eccentric wheel and the extension shaft, the extension shaft eccentrically rotates up and down in the vertical through groove to drive the rotating wheel to swing, and the reciprocating swing function of the transmission shaft is achieved through reciprocating swing of the rotating wheel swing shaft.

Description

Technical Field

[0001] This utility model relates to electric toothbrushes, and more particularly to electric toothbrush transmission devices. Background Technology

[0002] Most current electric toothbrush solutions incorporate a built-in vibrating motor, with the brush head mounted on the motor's shaft. The high-frequency vibration of the motor drives the bristles on the brush head to vibrate at the same frequency, thus cleaning the teeth. However, many electric toothbrushes on the market integrate the drive wheel and drive shaft. When the drive shaft senses pressure, it can easily interfere with the gears of the transmission mechanism. This leads to increased load during operation, shorter battery life, increased noise, weaker cleaning power, and also affects the lifespan of the transmission system.

[0003] To address this issue, existing patent literature, such as the utility model patent for an electric toothbrush authorized on November 6, 2020, discloses a device including a transmission wheel, a swing block, and a transmission shaft. The transmission wheel is equipped with an eccentric slider offset from its central axis, and the swing block has a swing groove. The eccentric slider of the transmission wheel passes through the swing groove, and the transmission shaft is connected to the swing block and also to the toothbrush head. When the transmission wheel drives the eccentric slider to slide within the swing groove, the swing block reciprocates, thereby driving the toothbrush head to reciprocate and rotate via the transmission shaft. This patent uses a transmission structure with a first gear and a second gear, which not only requires high machining precision but also imposes restrictions on installation space and position, making assembly relatively cumbersome. Therefore, designing a compact, low-cost, and highly efficient electric toothbrush transmission device is a technical problem that urgently needs to be solved in this case. Utility Model Content

[0004] To address the above problems, this utility model provides an electric toothbrush transmission device that is compact in structure, efficient and convenient to assemble, and stable in operation.

[0005] The technical solution of this utility model is:

[0006] The electric toothbrush drive mechanism includes:

[0007] The drive motor is detachably and fixedly installed inside the motor housing.

[0008] The transmission wheel includes a connecting wheel, an eccentric wheel, and an extension shaft that are fixedly connected in sequence; the rear side of the connecting wheel is fixedly connected to the rotating shaft of the transmission motor; the eccentric wheel is fixedly disposed on the front side of the connecting wheel; and the extension shaft is fixedly disposed near the edge of the eccentric wheel.

[0009] The rotating wheel is hinged inside the transmission housing; one side of the rotating wheel is provided with a vertical through groove adapted to the extension shaft, and the other side is provided with a fixedly connected swing shaft;

[0010] The drive shaft is rotatably disposed within the drive housing, with a rotating groove at its tail end that is adapted to the swing shaft, and its front end extending out from within the drive housing.

[0011] Specifically, the top and bottom of the rotating wheel are hinged to the transmission housing via hinge shafts.

[0012] Specifically, the hinge shaft has an eccentric structure on the top surface of the rotating wheel.

[0013] Specifically, the front end of the motor housing is provided with a pair of latches;

[0014] The outer side of the transmission housing is provided with several slots that are adapted to the latches, and the motor housing and the transmission housing are fixedly connected by the latches engaging.

[0015] Specifically, the motor housing has a battery mounting section at its tail end.

[0016] This utility model includes a transmission motor, a transmission wheel, a rotating wheel, and a transmission shaft; the transmission wheel includes a connecting wheel, an eccentric wheel, and an extension shaft that are fixedly connected in sequence; the rotating wheel is hinged in the transmission housing, with a vertical through groove on one side and a swing shaft on the other side; when the transmission motor is started, the rotating shaft of the transmission motor rotates, and the connecting wheel fixedly connected to it rotates, passing through the eccentric wheel and the extension shaft in sequence. The extension shaft rotates eccentrically up and down in the vertical through groove, driving the rotating wheel to swing. The rotating wheel swings back and forth through the swing shaft, realizing the reciprocating swing function of the transmission shaft. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the connection state of the drive motor;

[0019] Figure 3 This is a cross-sectional structural diagram of the connection between the transmission wheel and the rotating wheel;

[0020] Figure 4 This is a three-dimensional structural diagram showing the connection between the drive shaft and the drive housing;

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the motor housing;

[0022] Figure 6 This is a three-dimensional structural diagram showing the connection between the drive shaft and the rotating wheel;

[0023] In the diagram, 100 is the drive motor, 110 is the motor housing, and 111 is the battery mounting section.

[0024] 200 is the transmission wheel, 210 is the connecting wheel, 220 is the eccentric wheel, and 230 is the extension shaft.

[0025] 300 is the rotating wheel, 310 is the vertical through groove, and 320 is the swing axis.

[0026] 400 is the transmission housing.

[0027] 500 is the drive shaft. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "vertical," "horizontal," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] The following is for reference. Figure 1-6 Describe this utility model;

[0032] The electric toothbrush drive mechanism includes:

[0033] The drive motor 100 is detachably and fixedly installed inside the motor housing 110;

[0034] The transmission wheel 200 includes a connecting wheel 210, an eccentric wheel 220, and an extension shaft 230 that are fixedly connected in sequence; the rear side of the connecting wheel is fixedly connected to the rotating shaft of the transmission motor 100; the eccentric wheel 220 is fixedly disposed on the front side of the connecting wheel 210; and the extension shaft is fixedly disposed near the edge of the eccentric wheel 220.

[0035] A rotating wheel 300 is hinged within a transmission housing 400. One side of the rotating wheel 300 has a vertical through groove 310 adapted to the extension shaft 230, and the other side has a fixedly connected swing shaft 320. The top and bottom of the rotating wheel 300 are respectively hinged to the transmission housing 400 via hinge shafts. In this design, the hinge shaft has an eccentric structure on the top surface of the rotating wheel 300.

[0036] The drive shaft 500 is rotatably disposed within the drive housing 400, with a rotating groove at its tail end that is adapted to the swing shaft 320, and its front end extending out from within the drive housing 400. The drive shaft 500 is restricted in the horizontal direction by a partition within the drive housing 400, and its reciprocating swing is achieved by the swing of the swing shaft 320 on the rotating wheel 300.

[0037] The transmission method in this case is as follows: the transmission motor 100 starts, the rotating shaft of the transmission motor 100 rotates, the connecting wheel 210 fixedly connected to it rotates, and passes through the eccentric wheel 220 and the extension shaft 230 in sequence. The extension shaft 230 rotates eccentrically up and down in the vertical through groove 310, driving the rotating wheel 300 to swing. The rotating wheel 300 swings back and forth through the swing shaft 320, realizing the reciprocating swing function of the transmission shaft 500.

[0038] The front end of the motor housing 110 is provided with a pair of latches;

[0039] The outer side of the transmission housing 400 is provided with several slots that are adapted to the latches, and the motor housing 110 and the transmission housing 400 are fixedly connected by the latches.

[0040] The motor housing 110 has a battery mounting section 111 at its tail end.

[0041] Regarding the information disclosed in this case, the following points need to be clarified:

[0042] (1) The accompanying drawings of the embodiments disclosed in this case only involve the structures involved in the embodiments disclosed in this case. Other structures can refer to the general design.

[0043] (2) Where there is no conflict, the embodiments and features disclosed in this case can be combined with each other to obtain new embodiments;

[0044] The above are merely specific embodiments disclosed in this case, but the scope of protection of this disclosure is not limited thereto. The scope of protection disclosed in this case shall be determined by the scope of protection of the claims.

Claims

1. An electric toothbrush transmission device, characterized in that, include: The drive motor (100) is detachably and fixedly installed inside the motor housing (110); The transmission wheel (200) includes a connecting wheel (210), an eccentric wheel (220), and an extension shaft (230) that are fixedly connected in sequence; the rear side of the connecting wheel is fixedly connected to the rotating shaft of the transmission motor (100); the eccentric wheel (220) is fixedly disposed on the front side of the connecting wheel (210); the extension shaft is fixedly disposed near the edge of the eccentric wheel (220); A rotating wheel (300) is hinged in a transmission housing (400); one side of the rotating wheel (300) is provided with a vertical through groove (310) adapted to the extension shaft (230), and the other side is provided with a swing shaft (320) fixedly connected. The drive shaft (500) is rotatably disposed inside the drive housing (400), with a rotating groove at its tail end that is adapted to the swing shaft (320), and its front end extending out from inside the drive housing (400).

2. The electric toothbrush transmission device according to claim 1, characterized in that, The top and bottom of the wheel (300) are respectively hinged to the transmission housing (400) via hinge shafts.

3. The electric toothbrush transmission device according to claim 2, characterized in that, The hinge shaft has an eccentric structure on the top surface of the wheel (300).

4. The electric toothbrush transmission device according to claim 1, characterized in that, The front end of the motor housing (110) is provided with a pair of latches; The outer side of the transmission housing (400) is provided with several slots that are adapted to the latches, and the motor housing (110) and the transmission housing (400) are fixedly connected by the latches.

5. The electric toothbrush transmission device according to claim 1, characterized in that, The motor housing (110) is provided with a battery mounting part (111) at its tail end.

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