An electric toothbrush with an adjustable head-to-handle orientation

Abstract

The application discloses an electric toothbrush capable of adjusting the butt joint direction of a brush head and a handle, comprising a main machine and a brush head; the main machine comprises a first machine shell and a vibration motor installed on the first machine shell, and the vibration motor is provided with a first output shaft; the brush head is provided with a brush handle, and the brush handle is in plug-in connection with the first output shaft; the brush handle is provided with a first plug-in hole, and an elastic clamping piece is fixedly arranged in the first plug-in hole; the elastic clamping piece can make the first output shaft rotate relative to the first plug-in hole in a deformation state, and the elastic clamping piece can make the first output shaft remain in the first plug-in hole under the self-deformation effect. Compared with the prior art, the first output shaft can be clamped by the elastic clamping piece, the brush handle can rotate relative to the first output shaft, the brush head can be switched at different angles relative to the main machine, the user can select the brush head at different angles to clean teeth, the user does not need to hold the whole electric toothbrush to repeatedly rotate and adjust, and the operation mode of the user for adjusting the angle of the brush head is more convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electric toothbrushes, and particularly relates to an electric toothbrush capable of adjusting the docking direction of a brush head and a handle. BACKGROUND

[0002] An electric toothbrush is capable of generating high-frequency vibration of a brush head through rapid rotation or vibration of a motor core, so as to instantaneously decompose toothpaste into fine bubbles and clean dental crevices. Meanwhile, the vibration of the brush head can promote blood circulation in the oral cavity and has a massage effect on the gum tissue. During the development of the electric toothbrush, the inventor found that the main machine and the brush head of the existing electric toothbrush are fixedly installed, so that the user needs to repeatedly rotate the entire electric toothbrush to adjust the angle of the brush head when brushing teeth, so as to clean different surfaces of the teeth. Since the electric toothbrush is larger in size and weight than a traditional toothbrush, the user is not convenient to adjust the angle of the brush head.

[0003] Therefore, it is necessary to research a new technical solution to solve the above problems. SUMMARY

[0004] In view of the above, the present application aims at the defects of the prior art and mainly provides an electric toothbrush capable of adjusting the docking direction of a brush head and a handle, so as to effectively solve the defect that the angle of the brush head is inconvenient to adjust in the prior art.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solution.

[0006] The electric toothbrush capable of adjusting the docking direction of a brush head and a handle comprises a main machine and a brush head. The main machine comprises a first machine shell and a vibration motor installed on the first machine shell, and the vibration motor has a first output shaft. The brush head has a brush handle, and the brush handle is in plug-in connection with the first output shaft. The brush handle is provided with a first plug-in hole, and an elastic clamping piece is fixedly arranged in the first plug-in hole. The elastic clamping piece is capable of rotating the first output shaft relative to the first plug-in hole in a deformed state, and the elastic clamping piece is capable of keeping the first output shaft in the first plug-in hole under the self-deformation effect.

[0007] The electric toothbrush with the beneficial effect of adjusting the docking direction of the brush head and the handle provided by the application has the beneficial effects that: compared with the prior art, by installing the elastic clamping piece in the first plug-in hole of the brush handle, the first output shaft can be clamped by the elastic clamping piece, and the brush handle can be rotated relative to the first output shaft, so that the brush head can switch different angles relative to the main machine, so that the user can select the brush head of different angles to clean the teeth, without the user holding the entire electric toothbrush to repeatedly rotate and adjust, so that the operation mode of the user to adjust the angle of the brush head is more convenient; at the same time, the plug-in connection between the brush handle and the first output shaft can be completed by only one elastic clamping piece, which can simplify the connection structure between the brush handle and the first output shaft, not only can reduce the manufacturing difficulty, but also make the user more convenient and simple when plugging.

[0008] As a preferred scheme: the transverse cross-sectional shape of the first output shaft is a polygonal structure, the first output shaft has a plurality of first positioning surfaces, the plurality of first positioning surfaces are arranged in a circle along the central axis of the first output shaft, the elastic clamping piece is provided with a plurality of first abutting portions capable of abutting against the first positioning surfaces, and a first abutting portion is arranged to abut against a first positioning surface.

[0009] Compared with the prior art, by arranging the first positioning surface and the first abutting portion capable of cooperating with the first positioning surface, when the user switches the brush head to different angles, the number of the first positioning surfaces is switched, and the more the number of the first positioning surfaces, the finer the angle of the brush head switching; this structure can facilitate the user to switch the angle.

[0010] As a preferred scheme: the elastic clamping piece is arranged as a cylindrical metal spring piece, the cross-sectional shape of the metal spring piece is a polygonal structure, the metal spring piece is provided with a plurality of first abutting portions arranged at equal intervals, and each first abutting portion is arranged in an arc shape protruding towards the center of the first plug-in hole.

[0011] As a preferred scheme: the elastic clamping piece further comprises a first fixing portion and a first elastic arm for being arranged in the first plug-in hole, the first fixing portion can be arranged in the first plug-in hole; the first elastic arm is arranged in a circular array, each first elastic arm extends towards the center of the first plug-in hole, and a first abutting portion is arranged at the end of a first elastic arm.

[0012] As a preferred scheme: the first fixing portion is arranged in a circular ring shape, and the plurality of first elastic arms are arranged on the inner side surface of the first fixing portion.

[0013] As a preferred scheme: each first elastic arm is provided with a first hollow portion penetrating the upper and lower surfaces of the first elastic arm.

[0014] As a preferred scheme: the side surface of the elastic clamping piece is provided with a first limiting protrusion protruding towards the center of the first plug-in hole, and the first output shaft is provided with a first limiting recess for the first limiting protrusion to be inserted.

[0015] As a preferred solution: the bottom of the brush handle is detachably mounted with a first plug, and the first plug hole is arranged at the bottom of the first plug.

[0016] As a preferred solution: the side of the first plug is provided with a slot, the bottom of the brush handle is provided with a mounting hole capable of inserting the first plug, and the inner side of the mounting hole is provided with an insertion block capable of being inserted into the slot.

[0017] As a preferred solution: the first shell is further mounted with a first circuit board and a battery, and the first circuit board is provided with a control button capable of being exposed outside the first shell. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative labor.

[0019] Figure 1 is a partial three-dimensional structure exploded view of an electric toothbrush capable of adjusting the docking direction of the brush head and the handle provided by the first embodiment of the present application;

[0020] Figure 2 is Figure 1 is a non-exploded cross-sectional view of an electric toothbrush capable of adjusting the docking direction of the brush head and the handle;

[0021] Figure 3 is Figure 2 is a partial enlarged view of A in FIG. 1;

[0022] Figure 4 is Figure 3 is a cross-sectional view of A-A in FIG. 1;

[0023] Figure 5 is a partial three-dimensional structure exploded view of an electric toothbrush capable of adjusting the docking direction of the brush head and the handle provided by the second embodiment of the present application;

[0024] Figure 6 is Figure 5 is a non-exploded cross-sectional view of an electric toothbrush capable of adjusting the docking direction of the brush head and the handle;

[0025] Figure 7 is Figure 6 is a partial enlarged view of B in FIG. 2;

[0026] Figure 8 is Figure 7 is a cross-sectional view of the brush handle, the elastic clamping member and the first output shaft in FIG. 2;

[0027] Figure 9 is Figure 5 a perspective view of the elastic clamping piece shown in Fig. 1;

[0028] Figure 10 is Figure 5 a schematic view of the elastic clamping piece shown in Fig. 1 being deformed when being pushed by the first output shaft.

[0029] In the drawings, reference numerals:

[0030] 10, main machine; 11, first casing; 12, vibration motor; 121, first output shaft; 1211, first positioning surface; 1212, first limiting groove; 13, first circuit board; 131, control button; 14, battery;

[0031] 20, brush head; 21, brush handle; 211, first plug hole; 212, first plug-in piece; 2121, insertion slot; 22, elastic clamping piece; 221, first abutting portion; 222, first fixed portion; 2221, second positioning surface; 223, first elastic arm; 2231, first hollow portion; 224, first limiting protrusion. DETAILED DESCRIPTION

[0032] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0034] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0035] In addition, the terms "first", "second", etc. are used only for descriptive purposes and should not be construed as implying or suggesting relative importance or an indicated number of the technical features. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0036] In order to make the purpose, technical solutions and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples.

[0037] Please refer to Figures 1 to 4 , now a kind of electric toothbrush that can adjust the butt joint direction of brush head and handle provided by the embodiment one of the present application is described. The kind of electric toothbrush that can adjust the butt joint direction of brush head and handle, including: main machine 10 and brush head 20.

[0038] The main machine 10 includes the first casing 11 and the vibration motor 12 installed on the first casing 11, and the vibration motor 12 has the first output shaft 121; the brush head 20 has the brush handle 21, and the brush handle 21 is plug-in connected with the first output shaft 121; in the embodiment one of the present application, the brush handle 21 is provided with the first plug-in hole 211, and the elastic clamping piece 22 is fixed in the first plug-in hole 211; the elastic clamping piece 22 can make the first output shaft 121 rotate relative to the first plug-in hole 211 when in the deformation state, and the elastic clamping piece 22 can make the first output shaft 121 remain in the first plug-in hole 211 under the action of its own deformation; therefore, the elastic clamping piece 22 can clamp the first output shaft 121 and make the brush head 20 rotate relative to the main machine 10 to switch the angle of the brush head 20.

[0039] Since the elastic clamping piece 22 is installed in the first plug-in hole 211 of the brush handle 21, the elastic clamping piece 22 can clamp the first output shaft 121 and make the brush handle 21 rotate relative to the first output shaft 121; therefore, the brush head 20 can switch different angles relative to the main machine 10, so that the user can select the brush head of different angles to clean the teeth, without the need for the user to hold the entire electric toothbrush and repeatedly rotate and adjust, thereby making the operation mode of the user to adjust the angle of the brush head more convenient; at the same time, the plug-in connection between the brush handle 21 and the first output shaft 121 can be completed by only one elastic clamping piece 22, which can simplify the connection structure between the brush handle 21 and the first output shaft 121, not only can reduce the manufacturing difficulty, but also make the user more convenient and simple when plugging.

[0040] Specifically, the transverse cross-sectional shape of the first output shaft 121 is in a polygonal structure, the outer side surface of the first output shaft 121 is provided with a plurality of first positioning surfaces 1211, the plurality of first positioning surfaces 1211 are circumferentially arranged along the central axis of the first output shaft 121, the elastic clamping piece 22 is provided with a plurality of first abutting portions 221 capable of abutting against the first positioning surfaces 1211, and one first abutting portion 221 corresponds to abutting against one first positioning surface 1211. When a user adjusts the angle of the brush head 20, each action of rotating the brush handle 21 can enable the first abutting portion 221 to switch different first positioning surfaces 1211, and it can be understood that each switching of abutting against a first positioning surface 1211 can enable the brush head 20 to adjust an angle; if the number of the first positioning surfaces 1211 is more, the range of the angle adjustment is smaller; and the plurality of first positioning surfaces 1211 are arranged in an array along the circumference of the first output shaft 121.

[0041] In the embodiment one of the present application, the elastic clamping piece 22 is a metal elastic sheet, the metal elastic sheet can be folded into a cylindrical shape, so that the cross-sectional shape of the metal elastic sheet is in a polygonal structure, the metal elastic sheet is provided with a plurality of first abutting portions 221 arranged at equal intervals, and each first abutting portion 221 is arranged in an arc shape protruding towards the center of the first plug-in hole 211; in this way, each first abutting portion 221 is arc-shaped, so that it has elasticity, and the arc top of the first abutting portion 221 abuts against the first positioning surface 1211; when a user adjusts the angle of the brush head 20, each action of rotating the brush handle 21 can generate extrusion on the first abutting portion 221 to switch the angle of the brush head 20; and canceling the rotation of the brush handle 21 can enable the first abutting portion 221 to abut against the first positioning surface 1211 through the elastic force of the first abutting portion 221, so that the brush handle 21 does not rotate.

[0042] In addition, the side surface of the elastic clamping piece 22 is provided with a first limiting protrusion 224 protruding towards the center of the first plug-in hole 211, and the first output shaft 121 is provided with a first limiting groove 1212 for inserting the first limiting protrusion 224. In the embodiment one of the present application, the first limiting protrusion 224 protrudes towards the center of the first plug-in hole 211 on the inner side surface of the metal elastic sheet, and the first limiting protrusion 224 can be a protruding point or a protruding strip structure arranged in the radial direction of the metal elastic sheet; the first limiting groove 1212 is used in cooperation with the first limiting protrusion 224, so the first limiting protrusion 224 can be a concave point or a groove arranged in the radial direction of the first output shaft 121; as long as the first limiting protrusion 224 and the first limiting groove 1212 can be cooperated to limit the brush handle 21 from being separated from the first output shaft 121.

[0043] Specifically, the bottom of the brush handle 21 is detachably provided with a first plug 212, and the first plug hole 211 is arranged at the bottom of the first plug 212; the first plug 212 is in the shape of a circular truncated cone, that is, a small upper part and a large lower part; the side surface of the first plug 212 is provided with a plug groove 2121, and the bottom of the brush handle 21 is provided with a mounting hole (not shown in the figure) in which the first plug 212 can be inserted, and the inner side surface of the mounting hole is provided with a plug block (not shown in the figure) which can be inserted into the plug groove 2121; when the first plug 212 is inserted into the mounting hole, the plug block can be inserted into the plug groove 2121, so that the first plug 212 and the brush handle 21 are assembled in interference, and the position of the first plug 212 can be limited by the plug block, so as to ensure that the user can reliably adjust the angle between the brush head 20 and the main machine 10 through the elastic clamping piece 22. Since the output shaft of each electric toothbrush can be changed in different shapes according to actual needs, different elastic clamping pieces 22 need to be configured to adapt to the shape of the output shaft, so that by setting the detachable first plug 212, different first plugs 212 can be replaced accordingly to adapt to different shapes of the output shaft, thereby improving the versatility of the product.

[0044] It should be noted that the angle adjustment of the brush head 20 relative to the main machine 10; can be that the user directly acts on the radial rotation of the brush head 20 relative to the first output shaft 121 to obtain different angles of the brush head 20 relative to the main machine 10; or the user can extend the brush head 20 into the oral cavity and abut against the teeth, and change the angle on the teeth, and the brush head 20 is rotated by the action force of the teeth on the brush head 20, so that the user does not need to hold the entire main machine 10 to adjust the angle of the brush head 20, and the user can operate conveniently.

[0045] The first circuit board 13 and the battery 14 are installed in the first shell 11, the first circuit board 13 is provided with a control button 131 which can be exposed to the outside of the first shell 11, and the control button 131 can control the start and stop of the vibration motor 12 and the vibration frequency; the battery 14 is electrically connected with the first circuit board 13 and the vibration motor 12 respectively.

[0046] Please refer to Figures 5 to 9 , now a kind of electric toothbrush that can adjust the butt joint direction of brush head and handle provided by the embodiment two of the application will be described. The specific structure of the embodiment two is substantially the same as that of the embodiment one, and the difference lies in that the elastic clamping piece 22 is another structure.

[0047] In the second embodiment of the present application, the elastic holder 22 further comprises a first fixing part 222 and a first elastic arm 223, the first fixing part 222 is capable of being fitted into the first plug hole 211; the first elastic arm 223 is in a circular array and has a plurality of first elastic arms 223, each of the first elastic arms 223 extends to the center of the first plug hole 211, and a first abutting part 221 is arranged at the end of each of the first elastic arms 223. The first fixing part 222 can be made of any one of soft plastic, hard plastic or metal, the first elastic arm 223 is made of soft plastic, and the first abutting part 221 is made of any one of soft plastic, hard plastic or metal.

[0048] Specifically, when the brush head 20 is connected to the main machine 10 in a plug-in manner, the first plug hole 211 of the brush handle 21 is aligned with the first output shaft 121, and the first output shaft 121 is inserted into the first plug hole 211, in the process of inserting the first output shaft 121, the first abutting part 221 is extruded by the first output shaft 121, so that the first elastic arm 223 is plastically deformed, and the first output shaft 121 can be inserted into the first plug hole 211; when the top of the first output shaft 121 abuts against the top of the first plug hole 211, the first limiting protrusion 224 can be inserted into the first limiting groove 1212, so as to limit the axial displacement of the brush handle 21 relative to the first output shaft 121, and the brush handle 21 can only rotate radially relative to the first output shaft 121.

[0049] As shown in Figure 10 When the brush handle 21 is fixed, the first output shaft 121 is rotated to drive the elastic holder 22, that is, the first abutting part 221 is extruded by the first output shaft 121, so that the first elastic arm 223 is plastically deformed, and the first positioning surface 1211 is rotated and positioned from one first abutting part 221 to the next first abutting part 221.

[0050] Since the first fixing part 222, the first elastic arm 223 and the first abutting part 221 can be made of plastic material, the plastic material has better durability of elastic deformation than metal parts; therefore, the use of plastic as the elastic deformation mode can make its service life longer and more reliable. The outer surface of the first fixing part 222 can be provided with a plurality of second positioning surfaces 2221, and the side wall of the mounting hole of the first plug-in part 212 is provided with a wall surface capable of being matched with the second positioning surface 2221, so as to limit the position of the first fixing part 222 after the first fixing part 222 is fitted into the mounting hole.

[0051] In the second embodiment of the present application, the first fixed part 222 is arranged in a circular ring shape, and the plurality of first elastic arms 223 are arranged on the inner side surface of the first fixed part 222. Moreover, the first elastic arms 223 are each provided with a first hollow part 2231 penetrating through the upper and lower surfaces of the first elastic arm 223, and the first limiting protrusion 224 is arranged on one side of the top of the first abutting part 221. Through the arrangement of the first hollow part 2231, the elastic deformation amount of the first elastic arm 223 can be increased, so that the cooperation of the first abutting part 221 and the first output shaft 121 is more reliable and stable.

[0052] The above is only the preferred embodiment of the present application, and only the technical principle of the present application is specifically described. These descriptions are only for explaining the principle of the present application, and cannot be explained as the limitation of the protection scope of the present application in any way. Based on the explanation here, any modification, equivalent replacement and improvement within the spirit and principle of the present application, and other specific embodiments of the present application which can be thought by those skilled in the art without creative labor, should be included in the protection scope of the present application.

Claims

1. An electric toothbrush capable of adjusting the docking direction of the brush head and the handle, comprising: a main machine (10), the main machine (10) comprising a first casing (11) and a vibration motor (12) mounted on the first casing (11), the vibration motor (12) having a first output shaft (121); and a brush head (20), the brush head (20) having a brush handle (21) in plug-in connection with the first output shaft (121); characterized in that: the brush handle (21) is provided with a first plug-in hole (211), and an elastic clamping piece (22) is fixedly arranged in the first plug-in hole (211); the elastic clamping piece (22) can enable the first output shaft (121) to rotate relative to the first plug-in hole (211) in a deformed state, and the elastic clamping piece (22) can enable the first output shaft (121) to be kept in the first plug-in hole (211) under the action of its own deformation; the first output shaft (121) has a polygonal structure in a transverse cross-sectional shape, the first output shaft (121) has a plurality of first positioning surfaces (1211) arranged in a circle along a central axis of the first output shaft (121), and the elastic clamping piece (22) is provided with a plurality of first abutting portions (221) capable of abutting against the first positioning surfaces (1211), one first abutting portion (221) corresponding to one first positioning surface (1211); the elastic clamping piece (22) is arranged in a cylindrical metal spring, the metal spring has a polygonal structure in a cross-sectional shape, the metal spring is provided with a plurality of first abutting portions (221) arranged at equal intervals, and each first abutting portion (221) is arranged in an arc shape protruding towards the center of the first plug-in hole (211); when a user adjusts the angle of the brush head (20), the brush head (20) is rotated to generate extrusion on the first abutting portion (221) to switch the angle of the brush head (20); and when the rotation of the brush head (20) is cancelled, the first abutting portion (221) can be made to abut against the first positioning surface (1211) by the elastic force of the first abutting portion (221) so that the brush head (20) does not rotate.

2. The electric toothbrush capable of adjusting the docking direction of the brush head and the handle according to claim 1, characterized in that: the elastic clamping piece (22) is provided with a first fixing portion (222) for being arranged in the first plug-in hole (211) and a first elastic arm (223), the first fixing portion (222) is fixedly inserted into the first plug-in hole (211), the first elastic arm (223) is arranged in a circular array and has a plurality of first abutting portions (221) arranged at the ends of the first elastic arm.

3. The electric toothbrush capable of adjusting the docking direction of the brush head and the handle according to claim 2, characterized in that: the first fixing portion (222) is arranged in a circular ring shape, and the plurality of first elastic arms (223) are arranged on the inner side surface of the first fixing portion (222).

4. The electric toothbrush capable of adjusting the docking direction of the brush head and the handle according to claim 2 or 3, characterized in that: ​ ​ ​ ​ ​ The first elastic arms (223) are each provided with a first hollow part (2231) penetrating through the upper and lower surfaces of the first elastic arm (223).

5. The electric toothbrush of claim 1, wherein the brush head and the handle are connected in different directions. The side surface of the elastic clamping member (22) is provided with a first limiting protrusion (224) protruding towards the center of the first plug hole (211), and the first output shaft (121) is provided with a first limiting recess (1212) for inserting the first limiting protrusion (224).

6. The electric toothbrush of claim 1, wherein the brush handle (21) is detachably connected with the first plug-in member (212), and the first plug hole (211) is arranged at the bottom of the first plug-in member (212).

7. The electric toothbrush of claim 6, wherein the side surface of the first plug-in member (212) is provided with a slot (2121), the bottom of the brush handle (21) is provided with a mounting hole for inserting the first plug-in member (212), and the inner side surface of the mounting hole is provided with an insertion block capable of being inserted into the slot (2121).

8. The electric toothbrush of claim 1, wherein the first casing (11) is further provided with a first circuit board (13) and a battery (14), and the first circuit board is provided with a control button (131) capable of being exposed outside the first casing (11). ​ ​ ​

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