Electric toothbrush

Abstract

The utility model provides an electric toothbrush. The electric toothbrush comprises a support (1); the motor (2) is connected to the bracket (1); the eccentric wheel (3) is connected to an output shaft of the motor (2); the swing rod (4) can be connected to the support (1) in a swing mode relative to the support (1), the swing axis of the swing rod (4) extends in the axial direction (A) of the electric toothbrush and is staggered from the axis of the motor (2), and the eccentric wheel (3) is matched with the swing rod (4) so that the swing rod (4) can be driven to swing in a reciprocating mode; the brush head mounting shaft (5) can be connected to the support (1) in a swing mode relative to the support (1), the swing axis of the brush head mounting shaft (5) extends in the axial direction (A) of the electric toothbrush, and the swing rod (4) is matched with the brush head mounting shaft (5) so that the brush head mounting shaft (5) can be driven to swing in a reciprocating mode.

Description

Technical Field

[0001] The present invention relates to the field of oral cleaning, and in particular to an electric toothbrush. Background Art

[0002] In daily life, brushing teeth is the most basic way to remove dirt and plaque on the surface of teeth and prevent gingivitis and periodontitis.

[0003] The existing electric toothbrush drive structure is complex, and a complex transmission method is required to convert the rotation of the motor into the reciprocating motion of the toothbrush head, resulting in a complex manufacturing process for the electric toothbrush, high cost, a large number of parts, easy damage, short service life, unstable performance, and slow response speed. Utility Model Content

[0004] The present application aims to provide an electric toothbrush that uses fewer parts and achieves reciprocating oscillation of the toothbrush head.

[0005] The present application provides an electric toothbrush, comprising:

[0006] Bracket;

[0007] A motor connected to the bracket;

[0008] An eccentric wheel connected to an output shaft of the motor;

[0009] A swing rod, the swing rod is connected to the bracket so as to be swingable relative to the bracket, the swing axis of the swing rod extends along the axial direction of the electric toothbrush and is staggered from the axis of the motor, the eccentric wheel cooperates with the swing rod, thereby being able to drive the swing rod to swing back and forth; and

[0010] A brush head mounting shaft, wherein the brush head mounting shaft is connected to the bracket so as to be swingable relative to the bracket, wherein the swing axis of the brush head mounting shaft extends along the axial direction of the electric toothbrush, and the swing rod cooperates with the brush head mounting shaft so as to drive the brush head mounting shaft to swing back and forth.

[0011] In at least one possible implementation, the axes of the motor and the brush head mounting shaft are both located at the center of the electric toothbrush.

[0012] In at least one possible implementation, the eccentric wheel is provided with an eccentric column, the eccentric column is parallel to the output shaft of the motor and staggered in the radial direction of the electric toothbrush, and the rocker arm is provided with a hole, and the eccentric column is inserted into the hole.

[0013] In at least one possible implementation, the eccentric column is in close contact with the wall of the hole.

[0014] In at least one possible implementation, the hole is a strip-shaped hole extending in a radial direction of the electric toothbrush.

[0015] In at least one possible embodiment, the rocker arm includes a rocker arm shaft and a toggle portion, the rocker arm extends radially along the electric toothbrush, the rocker arm shaft and the toggle portion are respectively arranged at two ends of the rocker arm in the radial direction, the hole is arranged between the rocker arm shaft and the toggle portion, the rocker arm can swing around the rocker arm shaft, the toggle portion and the brush head mounting shaft cooperate, so that when the rocker arm swings, the brush head mounting shaft can be driven to swing back and forth through the toggle portion.

[0016] In at least one possible embodiment, the brush head mounting shaft includes a mounting shaft body and a swinging portion, wherein the swinging portion is connected to the rear end of the mounting shaft body, and the swinging portion extends from the mounting shaft body along the radial direction of the electric toothbrush. When the swinging portion swings, the mounting shaft body makes a non-full-circle reciprocating rotation around its central axis.

[0017] In at least one possible implementation, the toggle portion and the swing portion are in close contact with each other.

[0018] In at least one possible implementation, the electric toothbrush further comprises a bearing, wherein the bearing is sleeved on the brush head mounting shaft, and the bearing rotatably supports the mounting shaft body of the brush head mounting shaft on the bracket.

[0019] In at least one possible implementation manner, a waterproof ring is provided at the front end of the bracket, and a positioning member is provided between the waterproof ring and the bracket, and the positioning member locates the installation position of the waterproof ring.

[0020] By adopting the above technical solution, the driving structure of the electric toothbrush is simplified, and the reciprocating swing of the toothbrush head can be achieved by using fewer components. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A cross-sectional view of an electric toothbrush according to an embodiment of the present application is shown.

[0022] Figure 2 Shows Figure 1 A partial enlarged view of .

[0023] Figure 3 An exploded view of an electric toothbrush according to an embodiment of the present application is shown.

[0024] Figure 4 A schematic diagram of the internal structure of an electric toothbrush according to an embodiment of the present application is shown.

[0025] Figure 5 Shows Figure 4 A partial enlarged view of .

[0026] Description of Reference Numerals

[0027] 1 bracket 11 bracket body 12 bracket cover

[0028] 2 Motor

[0029] 3 eccentric wheel 31 eccentric column

[0030] 4 rocker 41 rocker shaft 42 toggle portion 43 hole

[0031] 5 brush head mounting shaft 51 mounting shaft body 52 swinging part

[0032] 6 Bearings

[0033] 7 Waterproof ring

[0034] 8 Positioning piece DETAILED DESCRIPTION

[0035] In order to more clearly explain the above-mentioned purposes, features and advantages of the present application, the specific implementation methods of the present application are described in detail in this section in conjunction with the accompanying drawings. In addition to the various implementation methods described in this section, the present application can also be implemented in other different ways. Without violating the spirit of the present application, those skilled in the art can make corresponding improvements, deformations and substitutions, so the present application is not limited by the specific embodiments disclosed in this section. The scope of protection of the present application shall be subject to the claims.

[0036] like Figures 1 to 5 As shown, the embodiment of the present application provides an electric toothbrush, which includes a bracket 1, a motor 2, an eccentric wheel 3, a swing rod 4, a brush head mounting shaft 5 and a bearing 6. The brush head mounting shaft 5 is used to connect the toothbrush head, and the electric toothbrush can drive the toothbrush head to swing back and forth, thereby cleaning teeth.

[0037] The bracket 1 may include a bracket body 11 and a bracket cover 12 . The bracket body 11 and the bracket cover 12 may form a cavity, and the motor 2 , the eccentric wheel 3 , the rocker arm 4 and the bearing 6 may all be disposed in the cavity.

[0038] The motor 2 can be fixedly mounted on the bracket 1, the output shaft of the motor 2 extends along the axial direction A of the electric toothbrush, and the eccentric wheel 3 is fixedly connected to the output shaft of the motor 1. The output shaft of the motor 2 can be located at the center of the electric toothbrush.

[0039] The swing rod 4 includes a swing rod shaft 41 and a toggle portion 42. The swing rod 4 is connected to the bracket 1 via the swing rod shaft 41 so as to be swingable relative to the bracket 1. The swing rod 4 can swing around the swing rod shaft 41, and the swing rod shaft 41 can be located at a radially outer position away from the center of the electric toothbrush. The swing axis of the swing rod 4 extends along the axial direction A of the electric toothbrush and is offset from the axis of the motor 2.

[0040] The eccentric wheel 3 is connected with the swing rod 4, and the swing rod 4 can be driven to swing back and forth by the rotation of the eccentric wheel 3. The toggle part 42 is connected with the brush head mounting shaft 5, and when the swing rod 4 swings, the toggle part 42 can toggle the brush head mounting shaft 5 to swing back and forth.

[0041] The swing rod 4 extends as a whole (or substantially) along the radial direction R of the electric toothbrush, and the swing rod shaft 41 and the toggle portion 42 can be respectively arranged at both ends of the swing rod 4 on the radial direction R, so that the toggle portion 42 can swing with a large amplitude in a limited space. By designing the length of the swing rod 4 or the relative positions of the swing rod shaft 41 and the toggle portion 42, the swing amplitude of the toothbrush head can be easily controlled.

[0042] like Figure 2 and Figure 5 As shown, specifically, the eccentric wheel 3 may be provided with an eccentric column 31, the eccentric column 31 and the output shaft of the motor 2 are parallel and staggered, and the swing rod 4 may be provided with a hole 43, and the eccentric column 31 is inserted into the hole 43. The hole 43 may be a strip hole extending along the radial direction R. The hole 43 is provided between the swing rod shaft 41 and the toggle portion 42.

[0043] When the eccentric wheel 3 rotates, the eccentric column 31 can push the wall of the hole 43, thereby driving the swing rod 4 to swing back and forth around the swing rod shaft 41. The eccentric column 31 is tightly fitted with the wall of the hole 43, so that the transmission structure operates stably, has high transmission efficiency, strong controllability, stable performance, fast response speed and long service life.

[0044] The brush head mounting shaft 5 may include a mounting shaft body 51 and a swinging portion 52, the swinging portion 52 may be connected to the rear end of the mounting shaft body 51 (the end of the electric toothbrush away from the brush head), and the swinging portion 52 may extend from the mounting shaft body 51 along the radial direction R of the electric toothbrush. The swinging portion 52 is disposed in the cavity of the bracket 1, and the mounting shaft body 51 extends out of the cavity.

[0045] The brush head mounting shaft 5 is connected to the bracket 1 so as to swing relative to the bracket 1. The swing axis of the brush head mounting shaft 5 extends along the axial direction A of the electric toothbrush and is preferably located at the center of the electric toothbrush. The swing axis of the brush head mounting shaft 5 can be the central axis of the mounting shaft body 51.

[0046] The swinging part 52 can be connected with the toggle part 42. When the swing rod 4 swings, the toggle part 42 can toggle the swinging part 52, so that the brush head mounting shaft 5 swings back and forth. The toggle part 42 and the swinging part 52 are closely fitted, so that the transmission structure runs stably, has high transmission efficiency, strong controllability, stable performance, fast response speed, and long service life.

[0047] Specifically, the toggle portion 42 may include a pin, and the swing portion 52 may be provided with a hole, which may be a strip hole extending along the radial direction R, into which the pin may be inserted, so that the reciprocating swing of the pin drives the swing portion 52 to reciprocate. Optionally, the pin may fit the hole wall.

[0048] Special instructions are required. Figure 4 and Figure 5 In the figure, the pin inserted into the hole is not shown, but the toggle portion 42 and the swing portion 52 should be connected in a matching manner.

[0049] The bearing 6 can be sleeved on the brush head mounting shaft 5. Two bearings 6 can be provided. The two bearings 6 can be respectively provided on both sides of the axial direction of the swinging part 52. The bearing 6 is used to support and position the brush head mounting shaft 5 and reduce the friction between the brush head mounting shaft 5 and the bracket 1.

[0050] In one possible implementation, Figures 1 to 3 As shown, a waterproof ring 7 may be provided at the front end of the bracket 1 to prevent water from entering the cavity of the bracket 1. A positioning member 8 may be provided between the bracket 1 and the waterproof ring 7 to position the installation position of the waterproof ring 7 and limit the movement of the waterproof ring 7.

[0051] When the electric toothbrush of the present application is working, the motor 2 drives the eccentric wheel 3 to rotate, and drives the swing rod 4 to swing back and forth around the swing rod shaft 41 through the eccentric column 31. The toggle portion 42 of the swing rod 4 can toggle the swing portion 52 to make the brush head mounting shaft 5 swing back and forth, thereby realizing the swinging operation of the toothbrush head.

[0052] Here, the reciprocating swinging motion of the brush head mounting shaft 5 can be understood or explained as follows. The mounting shaft body 51 makes a non-full-circle reciprocating rotation around its central axis, and the swinging portion 52 reciprocates around the central axis of the mounting shaft body 51. Since the bristle part of the toothbrush head is usually arranged eccentrically relative to the mounting shaft body 51, when the mounting shaft body 51 rotates, the bristle part will reciprocate around the central axis of the mounting shaft body 51.

[0053] The electric toothbrush of the present application has a simple driving structure, and can use fewer parts to realize the reciprocating swing of the toothbrush head, so that the teeth can be cleaned by sweeping the toothbrush head, and the cleaning effect is good. In addition, the transmission efficiency is high, the controllability is strong, the production cost is low, the performance is stable, the response speed is fast, and the service life is long.

[0054] It should be understood that at least some aspects or features of the above-mentioned implementation modes, embodiments or examples may be appropriately combined.

[0055] It is understood that in the present application, when the number of parts or components is not particularly limited, the number may be one or more, and the multiple here means two or more. For the case where the number of parts or components shown in the drawings and / or described in the specification is a specific number such as two, three, four, etc., the specific number is usually exemplary and not restrictive, and it can be understood as multiple, that is, two or more, but this does not mean that the present application excludes the case of one.

[0056] In the present application, unless otherwise clearly stated or limited, the terms such as "install", "assemble", "assemble", "connect", "connect", "couple", "link", "abut", "connect", "interconnect", "intercommunication", "conduction", "fixation", "fastening" and the like should be understood in a broad sense, for example, they can be direct or indirect. For example, regarding connection, it can be a fixed connection, a detachable connection, or an integral one; 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 be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly stated or limited. For example, regarding connectivity / conduction, it can be direct connectivity / conduction, or it can be indirect connectivity / conduction via an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0057] In the present application, unless otherwise clearly stated or limited, a component disposed on / installed on / located on / accommodated on / placed in, within, inside, etc. another component may be any of the following two situations: a part or most of the one component is located in the other component; and the one component is completely accommodated in the other component.

[0058] Although the present application is described in detail using the above-mentioned embodiments, it is obvious to those skilled in the art that the present application is not limited to the embodiments described in this specification. The present application can be modified and implemented as a modified embodiment without departing from the subject matter and scope of the present application as determined by the claims. Therefore, the description in this specification is for the purpose of illustration and does not have any restrictive meaning for the present application.

Claims

1. An electric toothbrush, characterized in that: The electric toothbrush comprises: Bracket; A motor connected to the bracket; An eccentric wheel connected to an output shaft of the motor; A swing rod, the swing rod is connected to the bracket so as to be swingable relative to the bracket, the swing axis of the swing rod extends along the axial direction of the electric toothbrush and is staggered from the axis of the motor, the eccentric wheel cooperates with the swing rod, thereby being able to drive the swing rod to swing back and forth; and A brush head mounting shaft, wherein the brush head mounting shaft is connected to the bracket so as to be swingable relative to the bracket, wherein the swing axis of the brush head mounting shaft extends along the axial direction of the electric toothbrush, and the swing rod cooperates with the brush head mounting shaft so as to drive the brush head mounting shaft to swing back and forth.

2. The electric toothbrush according to claim 1, characterized in that: The axes of the motor and the brush head mounting shaft are both located at the center of the electric toothbrush.

3. The electric toothbrush according to claim 1, characterized in that: The eccentric wheel is provided with an eccentric column, the eccentric column is parallel to the output shaft of the motor and staggered in the radial direction of the electric toothbrush, and the rocker arm is provided with a hole, and the eccentric column is inserted into the hole.

4. The electric toothbrush according to claim 3, characterized in that: The eccentric post is kept in close contact with the wall of the hole.

5. The electric toothbrush according to claim 3, characterized in that: The hole is a strip-shaped hole extending in the radial direction of the electric toothbrush.

6. The electric toothbrush according to claim 3, characterized in that: The rocker arm includes a rocker arm shaft and a toggle portion, the rocker arm extends radially along the electric toothbrush, the rocker arm shaft and the toggle portion are respectively arranged at two ends of the rocker arm in the radial direction, the hole is arranged between the rocker arm shaft and the toggle portion, the rocker arm can swing around the rocker arm shaft, the toggle portion cooperates with the brush head mounting shaft, so that when the rocker arm swings, the brush head mounting shaft can be driven to swing back and forth through the toggle portion.

7. The electric toothbrush according to claim 6, characterized in that: The brush head mounting shaft includes a mounting shaft body and a swinging portion, wherein the swinging portion is connected to the rear end of the mounting shaft body, and the swinging portion extends from the mounting shaft body along the radial direction of the electric toothbrush. When the swinging portion swings, the mounting shaft body performs non-full-circle reciprocating rotation around its central axis.

8. The electric toothbrush according to claim 7, characterized in that: The toggle portion and the swing portion are kept in close contact.

9. The electric toothbrush according to claim 7, characterized in that: The electric toothbrush further comprises a bearing, wherein the bearing is sleeved on the brush head mounting shaft, and the bearing rotatably supports the mounting shaft body of the brush head mounting shaft on the bracket.

10. The electric toothbrush according to claim 1, characterized in that: A waterproof ring is arranged at the front end of the bracket, and a positioning member is arranged between the waterproof ring and the bracket, and the positioning member locates the installation position of the waterproof ring.

Images