Brush head and electric toothbrush

Abstract

The brush head comprises a brush rod and a brush body used for cleaning an oral cavity, the brush rod comprises a hard rubber piece and a soft rubber piece with the hardness smaller than that of the hard rubber piece, the hard rubber piece is provided with a first connecting section and a second connecting section used for being connected with a brush handle of the electric toothbrush, and the first connecting section is connected to the end, away from the end connected with the brush handle, of the second connecting section. The brush body is arranged on the first connecting section, and the soft rubber piece at least partially covers the outer side of the hard rubber piece; wherein the brush body comprises bristles and a plurality of brush plate parts arranged at intervals, the bristles are connected with the brush plate parts, protruding parts are arranged at the ends, close to each other, of the brush plate parts respectively, the protruding parts of every two adjacent brush plate parts are arranged in a staggered mode in the thickness direction of the soft rubber part and partially overlapped, and the first connecting section is connected with at least one brush plate part. The soft rubber part wraps at least part of the outer sides of the protruding part and the brush plate parts so that the brush body can be bent and deformed through position changes of the brush plate parts, and therefore the inner surfaces of the teeth can be better cleaned.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oral cleaning, and in particular to a brush head and an electric toothbrush. BACKGROUND

[0002] With the improvement of people's living standards, personal cleaning and health are paid more and more attention by people, and electric toothbrushes are favored by many users because of their convenience, labor saving, and good cleaning power.

[0003] The brush head has a specific change in the height of the bristles. When a user uses the brush head to clean teeth, the bristles on the brush head are usually concave, thereby facilitating the cleaning of the outer surface of the teeth, but not facilitating the cleaning of the inner surface of the teeth. In addition, the brush plate part of the brush head cannot be adjusted in shape, which can easily lead to incomplete cleaning of the inner surface of the teeth. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a brush head and an electric toothbrush, which aims to solve at least one of the technical problems that the brush head cannot be adjusted in shape, the cleaning of the inner surface of the teeth is not facilitated, and the cleaning of the inner surface of the teeth is not complete.

[0005] According to a first aspect of the present application, the present application provides a brush head for an electric toothbrush, characterized in that it comprises:

[0006] a brush body for cleaning the oral cavity;

[0007] a brush rod comprising a hard rubber part and a soft rubber part with a hardness less than that of the hard rubber part, the hard rubber part having a first connecting section and a second connecting section for connecting with a brush handle of the electric toothbrush, the first connecting section being connected to the second connecting section away from one end connected with the brush handle, the brush body being arranged on the first connecting section, and the soft rubber part being at least partially wrapped on the outside of the hard rubber part;

[0008] wherein the brush body comprises bristles and a plurality of spaced brush plate parts, the bristles being connected with the brush plate parts, one end of each of the plurality of brush plate parts being provided with a protruding part, the protruding parts of adjacent two brush plate parts being arranged in a staggered manner in the thickness direction and having a partial overlap, the first connecting section being connected with at least one of the brush plate parts, and the soft rubber part being wrapped on at least part of the outside of the brush plate parts and the protruding parts, so that the brush body can be bent and deformed by changing the positions of the plurality of brush plate parts, and the bristles on the brush plate parts can form a concave surface or a convex surface according to the deformation degree of the brush body, thereby better cleaning different areas of the teeth and improving the cleaning effect.

[0009] In the brush head of the embodiment of the present application, the protruding parts of the adjacent two brush plate parts abut along the thickness direction of the soft rubber part; or,

[0010] The protruding part is in abutment with the adjacent brush plate part along the length direction of the brush rod; or,

[0011] The protruding part of the adjacent two brush plate parts has a gap; or,

[0012] The protruding part has a gap with the adjacent brush plate part, so that the relative positions between the adjacent two brush plate parts can change and form a corresponding concave or convex surface when the bristles and / or the brush plate part are stressed, so that the bristles on the brush plate part can be uniformly contacted with the tooth surface, which is helpful for the cleaning of the toothbrush.

[0013] In the brush head of an embodiment of the present application, the protruding part has a curved surface structure on the side close to the adjacent brush plate part, so that the free end of the protruding part can be avoided from having an edge, and the protruding part is more likely to have a slight position change.

[0014] In the brush head of an embodiment of the present application, the hardness of the protruding part is less than the hardness of the brush plate part; and / or,

[0015] The thickness of the protruding part is less than the thickness of the brush plate part; and / or,

[0016] The width of the protruding part is less than the width of the brush plate part; and / or,

[0017] The width of the protruding part is greater than the thickness of the protruding part, so that the overall deformation of the brush plate part is more likely to occur, so that the bristles on the brush plate part can form a concave or convex surface according to the deformation degree of the brush plate part, thereby better cleaning different areas of the teeth.

[0018] In the brush head of an embodiment of the present application, the brush plate part has a bristle planting surface and a back surface arranged opposite in the thickness direction, the surface of the protruding part close to the bristle planting surface does not exceed the bristle planting surface of the brush plate part, and the other surface of the protruding part does not exceed the back surface of the brush plate part, so that the deformation amount between the adjacent two brush plate parts can be set according to the gap between the two misaligned protruding parts, for example, when the thickness of the protruding part is constant, the smaller the first distance between the protruding part and the bristle planting surface, or the smaller the second distance between the protruding part and the bristle planting surface, the greater the distance between the two misaligned protruding parts, the greater the relative displacement amount between the adjacent two brush plate parts, and the greater the deformation amount.

[0019] In the brush head of the embodiment of the present application, the distance between the convex part and the bristle surface of the brush plate part is greater than the distance between the convex part and the back surface of the brush plate part, so that the deformation amount of the brush plate part forming the concave surface is greater than the deformation amount of the brush plate part forming the convex surface, not only can the structure that the bristles on the brush plate part form the bristle surface recessed to the side of the bristles be met, but also the bristles on the brush plate part can be adjusted to the structure that the bristle surface is recessed to the side of the bristles, so as to clean the inner surface of the teeth, so that the bristles can be in uniform contact with the tooth surface, thereby helping the cleaning of the toothbrush.

[0020] In the brush head of the embodiment of the present application, one of the two adjacent brush plate parts is provided with a first gap, and the other of the two adjacent brush plate parts is provided with a second gap, the positions of the first gap and the second gap correspond to the position of the convex part, which can provide avoidance for the movement of the convex part.

[0021] In the brush head of the embodiment of the present application, the brush plate part includes a first brush plate part and a second brush plate part, the first brush plate part is located on the side close to the brush handle, and the first connecting segment is connected with the first brush plate part.

[0022] The convex part includes a first convex part and a second convex part, the first convex part is arranged on the side of the first brush plate part facing the second brush plate part, the second convex part is arranged on the side of the second brush plate part facing the first brush plate part, and the first convex part and the second convex part are arranged in a staggered manner along the thickness direction, so that the first brush plate part and the second brush plate part can move in position when the bristles and / or the brush plate part are stressed, so that the bristles on the brush plate part can form a concave surface or a convex surface according to the deformation degree of the brush plate part, thereby better cleaning different areas of the teeth.

[0023] In the brush head of the embodiment of the present application, the distance between the first convex part and the bristle surface of the brush plate part is less than the distance between the second convex part and the bristle surface of the brush plate part, so that the deformation amount of the first brush plate part relative to the second brush plate part and forming the concave surface is greater than the deformation amount of the first brush plate part relative to the second brush plate part and forming the convex surface, so that the bristles can better fit the molars in the back part when they are deeply cleaned by forming the concave surface or the convex surface.

[0024] In the brush head of the embodiment of the present application, the area of the bristle surface of the first brush plate part is greater than the area of the bristle surface of the second brush plate part, so that the first brush plate part and the second brush plate part can clean different teeth respectively when brushing teeth, such as the first brush plate which can directly contact with the incisors and the canines in a large area, thereby effectively cleaning the incisors and the canines; and the second brush plate part can clean each corner of the teeth inside the oral cavity.

[0025] In the brush head of an embodiment of the present application, the brush plate part comprises a first brush plate part, a second brush plate part and a third brush plate part, the first brush plate part is located on the side close to the brush handle, the third brush plate part is located on the side away from the brush handle, and the second brush plate part is arranged between the first brush plate part and the third brush plate part, and the first connecting section is connected with the first brush plate part or the second brush plate part;

[0026] The convex part comprises a first convex part, a second convex part, a third convex part and a fourth convex part, the first convex part is arranged on the side of the first brush plate part facing the second brush plate part, the second convex part is arranged on the side of the second brush plate part facing the first brush plate part, the third convex part is arranged on the side of the second brush plate part facing the third brush plate part, and the fourth convex part is arranged on the side of the third brush plate part facing the second brush plate part, so that the first brush plate part, the second brush plate part and the third brush plate part can move in position when the bristles and / or the brush plate part are stressed, so that the bristles on the brush plate part can form a concave surface or a convex surface according to the deformation degree of the brush plate part, thereby better cleaning different areas of the teeth.

[0027] In the brush head of an embodiment of the present application, the distance between the first convex part and the bristle planting surface of the brush plate part is greater than the distance between the second convex part and the bristle planting surface of the brush plate part; and / or, the distance between the third convex part and the bristle planting surface of the brush plate part is greater than the distance between the fourth convex part and the bristle planting surface of the brush plate part, so that the first brush plate part and the third brush plate part can move relative to the second brush plate part and form a deformation amount of the bristle planting surface concave to the side of the bristles greater than a deformation amount of the first brush plate part and the third brush plate part moving relative to the second brush plate part and forming a convex surface, so that the bristles forming a concave surface or a convex surface can better fit the molars in the back part when penetrating into the back part of the teeth, thereby better cleaning the molars in the deeper part.

[0028] In the brush head of an embodiment of the present application, the area of the bristle planting surface of the second brush plate part is greater than the area of the bristle planting surface of the third brush plate part and the second brush plate part, so that the first brush plate part, the second brush plate part and the third brush plate part can clean different teeth respectively when brushing teeth, such as the second brush plate can directly contact the front teeth and the canine teeth in a large area, thereby effectively cleaning the front teeth and the canine teeth; and the first brush plate part and the third brush plate part can clean each corner of the teeth inside the oral cavity.

[0029] In the brush head of an embodiment of the present application, the brush plate part is provided with a reinforcing part, the cross-sectional area of the reinforcing part gradually decreases along the thickness direction towards the side away from the bristle planting surface of the brush plate part, for improving the strength of the brush plate part, and the gradually decreasing cross-sectional area of the reinforcing part can bring greater bending amount to the concave or convex on the side of the bristle planting surface to the bristles.

[0030] In the brush head of the embodiment of the application, the surface of the reinforcing part away from the side of the bristle planting surface is flush with the back surface of the soft rubber piece, so that the support force for ultrasonic welding of the brush plate part and the first connecting section can be provided by the reinforcing part exposed from the soft rubber piece, so as to meet the process requirement of ultrasonic welding; or the soft rubber piece completely covers the outside of the reinforcing part, which can play a role of vibration reduction, protect the teeth and improve the comfort of the user during tooth brushing.

[0031] In the brush head of the embodiment of the application, the first connecting section is connected with the side edge or the back surface of the brush plate part closest to the first connecting section, so that the first connecting section can be fixed with the brush plate part into an integrated structure.

[0032] In the brush head of the embodiment of the application, when the first connecting section is connected with the brush plate part closest to the first connecting section, an avoiding space is formed between the first connecting section and the brush plate part closest to the first connecting section, so that the brush plate part closest to the first connecting section can be bent and deformed. According to the second aspect of the application, the application further provides an electric toothbrush comprising a brush handle and the brush head described above, wherein the brush head is connected with the brush handle through the brush rod.

[0033] The technical scheme provided by the embodiments of the application can have the following beneficial effects: the application designs a brush head and an electric toothbrush, which comprise a brush rod and a brush body for cleaning the oral cavity, the brush body comprises a plurality of brush plate parts arranged at intervals, the brush rod is connected with at least one brush plate part, the end of each brush plate part close to the other brush plate parts is respectively provided with a protruding part, the protruding parts of the adjacent two brush plate parts are arranged in a staggered manner in the thickness direction and have a partial overlap, and a soft rubber piece covers at least part of the outside of the brush plate parts and the protruding parts. Therefore, the relative positions between the plurality of brush plate parts can change when the brush body is subjected to a force, so that the brush body is bent and deformed, the bristles on the brush plate parts can form a concave surface or a convex surface according to the deformation degree of the brush body, and thus different areas of the teeth can be better cleaned, which is beneficial to improving the cleaning effect.

[0034] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the application. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical scheme of the embodiments of the application, the drawings required in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creating any labor.

[0036] Figure 1 is a structure schematic view of the brush head in the first embodiment of the application;

[0037] Figure 2 is Figure 1 is an exploded view of the brush head in

[0038] Figure 3 is Figure 1 is a structural view of the hard rubber piece and the brush plate part in

[0039] Figure 4 is Figure 3 is a structural view of the soft rubber piece in

[0040] Figure 5 is an exploded view of the brush head in the second embodiment of the present application;

[0041] Figure 6 is a structural view of the hard rubber piece and the brush plate part in Figure 5

[0042] Figure 7 is a partial view of the brush head in the third embodiment of the present application;

[0043] Figure 8 is a cross-sectional view of the brush head in Figure 7

[0044] Figure 9 is a partial view of the brush head in the fourth embodiment of the present application;

[0045] Figure 10 is a partial view of the brush head in the fifth embodiment of the present application.

[0046] BRIEF DESCRIPTION OF DRAWINGS

[0047] 100, brush head; 101, avoiding space;

[0048] 10, brush body; 11, brush plate part; 11a, first brush plate part; 11b, second brush plate part; 11c, third brush plate part, 111, protruding part; 111a, first protruding part; 111b, second protruding part; 111c, third protruding part; 111d, fourth protruding part; 1111, arc surface structure; 112, bristle planting surface; 113, back surface; 114, bristle planting hole; 115, first notch; 116, second notch; 12, bristle;

[0049] 20, brush rod; 21, hard rubber piece; 211, first connecting section; 212, second connecting section; 22, soft rubber piece; 221, accommodating groove; 221a, first accommodating groove; 221b, second accommodating groove; 221c, third accommodating groove; 222, limiting groove; 222a, first limiting groove; 222b, second limiting groove; 223, protruding structure;

[0050] 30, insert. DETAILED DESCRIPTION​​

[0051] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0052] It should also be understood that the terms used in this specification of the present application are only for the purpose of describing specific realities. In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0053] The following describes some embodiments of the present application in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0054] See also Figure 1 , Figure 1 This is a schematic diagram of a brush head 100 provided in an embodiment of the present application. The brush head 100 can be used in various types of electric toothbrushes. Of course, the brush head 100 can also be used independently or in ordinary non-powered toothbrushes, which is not limited in this application.

[0055] Among them, the electric toothbrush has driving power. When the brush head 100 is applied to the electric toothbrush, the brush head 100 can be connected to the brush handle of the electric toothbrush to drive the brush head 100 to vibrate through the brush handle to achieve oral cleaning.

[0056] like Figures 1 to 10As shown, according to the first aspect of the present application, the present application provides a brush head 100, which comprises a brush rod 20 and a brush body 10 for oral cleaning, the brush body 10 is connected to one end of the brush rod 20, and the other end of the brush rod 20 is detachably connected to one end of the brush handle of the electric toothbrush, so that the user can drive the brush body 10 to move by holding the brush handle, thereby completing the tooth brushing action.

[0057] In an optional embodiment, as shown in Figure 2 and Figure 3 As shown, the brush body 10 comprises a plurality of brush plate parts 11 arranged at intervals, the plurality of brush plate parts 11 are sequentially arranged along the length direction of the brush rod 20, and the brush rod 20 is connected to at least one of the plurality of brush plate parts 11. Among them, at least part of the end of the plurality of brush plate parts 11 close to each other overlaps in the thickness direction, so as to limit the change amount of the relative position between the plurality of brush plate parts 11 when the brush body 10 is stressed, so that the bristles 12 on the brush plate part 11 can form a concave surface or a convex surface according to the deformation degree of the brush body 10, so that different areas of the teeth can be better cleaned, and the cleaning effect can be improved.

[0058] It should be noted that the concave surface refers to the curved surface formed by the implanting surface 112 being recessed towards the bristles 12 side, and the convex surface refers to the curved surface formed by the implanting surface 112 being protruded towards the bristles 12 side.

[0059] In an optional embodiment, the brush body 10 comprises bristles 12, each brush plate part 11 has an implanting surface 112 and a back surface 113 arranged opposite in the thickness direction, and the bristles 12 are arranged on each brush plate part 11 and extend out from the implanting surface 112, for cleaning the teeth.

[0060] For example, each brush plate part 11 is provided with an implanting hole 114, and the root of the bristle 12 is arranged in the implanting hole 114 and fixed on the implanting hole 114 by a hot melting process, which not only has a simple structure and low production cost, but also has reliable and stable connection. Among them, the implanting hole 114 can be irregularly shaped, which is not limited by the present application.

[0061] In an optional embodiment, the bristles 12 are implanted into the corresponding implanting holes 114 by copper sheets, without the need for additional fixing structures such as hot melt glue or similar fasteners, so as to improve the implanting efficiency of the bristles 12 in the present application, and further improve the manufacturing efficiency of the brush head provided by the present application. In an optional embodiment, the bristles 12 have a plurality of bristle bundles, and the bristle bundles are connected to different implanting holes 114 at intervals, in other words, there is an interval between adjacent bristle bundles, which provides a space 101 for the bending of adjacent bristle bundles, facilitating the deformation of the bristle bundles according to the shape of the oral cavity, so that the bristle bundles can better fit the teeth, and at the same time, it is also convenient to clean the food residues between adjacent bristle bundles.

[0062] For example, when the brush rod 20 transmits the vibration of the handle of the electric toothbrush to the brush plate part 11, the brush plate part 11 drives the vibration of the bristle bundle, that is, the brush rod 20 can transmit the vibration of the handle to the brush plate part 11, and the brush plate part 11 can transmit the vibration of the brush rod 20 to the bristle bundle. Since the bristle bundle can be deformed during brushing, the bristles 12 can better fit the teeth and effectively clean the teeth.

[0063] It should be noted that the bristles 12 can be implanted on the implanting surface 112 by copper implanting, non-copper implanting or injection molding, which is not limited in the present application, and the main purpose is to fix the bristles 12 with the brush plate part 11.

[0064] In an optional embodiment, the brush rod 20 includes a hard rubber piece 21 and a soft rubber piece 22 with a hardness less than that of the hard rubber piece 21. The soft rubber piece 22 can be wrapped on the outside of the hard rubber piece 21 and at least part of the brush body 10, so that the brush rod 20 has a certain elasticity, so as to absorb the kinetic energy generated when the electric toothbrush vibrates, so that the brush body 10 can more easily swing relative to the brush rod 20, and the swing amplitude is also larger, and the contact between the brush rod 20 and the teeth is also more soft, and the movement freedom of the bristles 12 is also larger, which is beneficial to improve the cleaning effect; at the same time, it can also avoid the collision between the brush body 10 and the teeth, thereby improving the comfort of the user during brushing.

[0065] In an optional embodiment, the soft rubber piece 22 is wrapped on at least part of the outside of the plurality of brush plate parts 11 and the protruding parts 111 on the brush plate parts 11, for realizing the connection between the plurality of brush plate parts 11, and enabling the relative positions between the plurality of brush plate parts 11 to change when the bristles 12 and / or the brush plate parts 11 are stressed, so that the bristles 12 can form concave or convex surfaces with different radii according to the deformation degree of the brush plate parts 11, thereby better cleaning different areas of the teeth to achieve better cleaning effect, and also without causing damage to the teeth.

[0066] In an optional embodiment, the hard rubber piece 21 has a first connecting section 211 and a second connecting section 212 for connecting with the handle of the electric toothbrush, the first connecting section 211 is connected to the end of the second connecting section 212 away from the handle, and the first connecting section 211 is connected with at least one of the plurality of brush plate parts 11. The soft rubber piece 22 is at least partially wrapped on the outside of the first connecting section 211 and the plurality of brush plate parts 11, so as to avoid the collision between the first connecting section 211 and the plurality of brush plate parts 11 and the teeth, thereby improving the comfort of the user during brushing.

[0067] In an optional embodiment, the plurality of brush plate portions 11 are respectively provided with protruding portions 111 at one end close to each other, the protruding portions 111 of the two adjacent brush plate portions 11 are arranged in a staggered manner in the thickness direction and have a partial overlap in the projection in the thickness direction, and the soft rubber member 22 is wrapped outside at least part of the brush plate portions 11 and the protruding portions 111, so that the brush body 10 can be deformed by the position change of the plurality of brush plate portions 11, so that the bristles 12 can uniformly and closely contact the tooth surface, which is helpful for the cleaning of the toothbrush.

[0068] The protruding portions 111 of the two adjacent brush plate portions 11 are arranged in a staggered manner in the thickness direction and have a partial overlap in the projection in the thickness direction, so that the position deformation between the brush plate portions 11 can be limited, so that the bristles 12 can form concave or convex surfaces with different radii according to the deformation degree of the brush plate portions 11; at the same time, the soft rubber member 22 wrapped outside the brush plate portions 11 and the protruding portions 111 can connect the plurality of brush plate portions 11 together to form an overall structure and restore the bending deformation of the brush body 10, which can also avoid the collision between the brush body 10 and the teeth, and improve the comfort of the user during brushing.

[0069] In an optional embodiment, as shown in Figures 2 to 4 The soft rubber member 22 is wrapped outside at least part of the first connecting section 211, the brush plate portions 11 and the protruding portions 111 by a secondary injection molding process; or the soft rubber member 22 is wrapped outside at least part of the first connecting section 211, the brush plate portions 11 and the protruding portions 111 by a double-color injection molding process; or the soft rubber member 22 is wrapped outside at least part of the first connecting section 211, the brush plate portions 11 and the protruding portions 111 by a sleeve process, which not only ensures the sealing between the soft rubber member 22 and the brush plate portions 11 and the protruding portions 111, but also improves the production efficiency of the brush head 100, facilitates assembly, and improves the assembly efficiency.

[0070] In an optional embodiment, the soft rubber member 22 can form a receiving groove 221 corresponding to the shape of the brush plate portion 11 and a limiting groove 222 corresponding to the shape of the protruding portion 111 after being wrapped around the brush plate portion 11 and the protruding portion 111, so that the brush plate portion 11 and the protruding portion 111 can be easily accommodated in the receiving groove 221 and the limiting groove 222.

[0071] For example, the brush plate part 11 includes a first brush plate part 11a, a second brush plate part 11b and a third brush plate part 11c, the accommodating groove 221 includes a first accommodating groove 221a, a second accommodating groove 221b and a third accommodating groove 221c arranged along the length direction, the limiting groove 222 includes a first limiting groove 222a and a second limiting groove 222b arranged along the thickness direction, the first brush plate part 11a, the second brush plate part 11b and the third brush plate part 11c are accommodated in the first accommodating groove 221a, the second accommodating groove 221b and the third accommodating groove 221c respectively, one of the protruding parts 111 of the two adjacent brush plate parts 11 is accommodated in the first limiting groove 222a, and the other of the protruding parts 111 of the two adjacent brush plate parts 11 is accommodated in the second limiting groove 222b, so that the first connecting section 211, the brush plate part 11 and the protruding part 111 and the soft rubber part 22 can form an integrated structure, and the structural stability of the brush head 100 is ensured.

[0072] In an optional embodiment, the protruding parts 111 of the two adjacent brush plate parts 11 abut along the thickness direction of the soft rubber part 22, so that when the bristles 12 and / or the brush plate part 11 are stressed, the relative positions between the two adjacent brush plate parts 11 can rotate around the abutting point between the two protruding parts 111 to form a corresponding concave or convex surface, so that the bristles 12 on the brush plate part 11 can be uniformly in contact with the tooth surface, which is helpful for the cleaning of the toothbrush.

[0073] In an optional embodiment, the protruding parts 111 of the two adjacent brush plate parts 11 have a gap therebetween, so that when the bristles 12 and / or the brush plate part 11 are stressed, the relative positions between the two adjacent brush plate parts 11 can have a larger deformation range, so as to better clean different areas of the teeth to achieve better cleaning effect, and meanwhile, the teeth will not be damaged.

[0074] In an optional embodiment, as shown in FIG. 6, the protruding part 111 of the brush plate part 11 is arranged on the side of the brush plate part 11 away from the soft rubber part 22. Figure 2 and Figure 3As shown, the protruding portion 111 and the adjacent brush plate portion 11 have a gap therebetween, so that the relative positions between the adjacent two brush plate portions 11 can have a large deformation range when the bristles 12 and / or the brush plate portions 11 are stressed, so as to better clean different areas of the teeth to achieve better cleaning effect, and meanwhile, the teeth will not be damaged. For example, the protruding portion 111 extends towards one side of the adjacent brush plate portion 11 and has a gap with the end face of the adjacent brush plate portion 11, and the protruding portions 111 on the adjacent two brush plate portions 11 are spaced apart in the thickness direction and at least partially overlap in the thickness direction. The side of the protruding portion 111 close to the adjacent brush plate portion 11 has a circular arc chamfer, which can avoid the free end of the protruding portion 111 having an edge, so that the protruding portion 111 is more likely to have a slight position change, and thus the adjacent brush plate portions 11 can also have a corresponding position change when the bristles 12 and / or the brush plate portions 11 are slightly stressed, and meanwhile, the edge of the protruding portion 111 will not cause damage to the soft rubber 22 when the position change occurs between the adjacent two brush plate portions 11.

[0075] In an optional embodiment, as shown in Figure 5 and Figure 6 One of the adjacent two brush plate portions 11 is provided with a first notch 115, and the other of the adjacent two brush plate portions 11 is provided with a second notch 116, the positions of the first notch 115 and the second notch 116 correspond to the position of the protruding portion 111, which can provide a clearance for the movement of the protruding portion 111; meanwhile, the soft rubber 22 can form a protruding structure 223 corresponding to the first notch 115 and the second notch 116 to cooperate with each other, which is used to limit the free movement of the protruding portion 111 and make the bending deformation of the brush body 10 quickly recover.

[0076] In an optional embodiment, as shown in Figure 7 and Figure 8 One of the protruding portions 111 on the adjacent two brush plate portions 11 protrudes towards one side of the planting surface 112 in the thickness direction, and the other of the protruding portions 111 on the adjacent two brush plate portions 11 protrudes towards one side of the back surface 113 in the thickness direction, and the protruding portions 111 on the adjacent two brush plate portions 11 have a matching arc to make the bristles 12 form different concave or convex surfaces according to the deformation degree of the brush plate portions 11 when the bristles 12 and / or the brush plate portions 11 are slightly stressed, so that the bristles 12 can uniformly contact the tooth surface, which is helpful for the cleaning of the toothbrush.

[0077] In an optional embodiment, as shown in Figure 9As shown in FIG. 1 1, the protruding portion 111 is in a spherical structure near the side of the adjacent brush plate portion 11, which can avoid the free end of the protruding portion 111 from having an edge, and thus the protruding portion 111 is more likely to have a slight change in position.

[0078] In an optional embodiment, as shown in FIG. 1 1, Figure 3 、 Figure 6 、 Figure 7 and Figure 9 As shown in FIG. 1 1, the protruding portion 111 has a curved surface structure 1 1 1 near the side of the adjacent brush plate portion 11, which includes but is not limited to the above-mentioned circular arc chamfer and spherical structure, so as to avoid the free end of the protruding portion 111 from having an edge, and thus the protruding portion 111 is more likely to have a slight change in position.

[0079] In an optional embodiment, the hardness of the protruding portion 111 is less than that of the brush plate portion 11, so that the adjacent two brush plate portions 11 are more likely to deform, wherein the protruding portion 111 is mainly used to limit the displacement of the relative position between the adjacent two brush plate portions 11, so as to limit the deformation of the brush plate portion 11, and thus the bristles 12 on the brush plate portion 11 can form a concave or convex surface according to the deformation degree of the brush plate portion 11, so as to better clean different areas of the teeth.

[0080] In an optional embodiment, the thickness of the protruding portion 111 is less than that of the brush plate portion 11, so that the overall brush plate portion 11 is more likely to deform when the bristles 12 and / or the brush plate portion 11 are stressed, so that the bristles 12 on the brush plate portion 11 can form a concave or convex surface according to the deformation degree of the brush plate portion 11, so as to better clean different areas of the teeth.

[0081] In an optional embodiment, the width of the protruding portion 111 is less than that of the brush plate portion 11, so that the overall brush plate portion 11 is more likely to deform, so that the bristles 12 on the brush plate portion 11 can form a concave or convex surface according to the deformation degree of the brush plate portion 11, so as to better clean different areas of the teeth.

[0082] In an optional embodiment, the width of the protruding portion 111 is greater than the thickness of the protruding portion 111, so that the overall brush plate portion 11 is more likely to deform, so that the bristles 12 on the brush plate portion 11 can form a concave or convex surface according to the deformation degree of the brush plate portion 11, so as to better clean different areas of the teeth.

[0083] In an optional embodiment, the surface of the protrusion 111 close to the bristle surface 112 side of the brush plate portion 11 does not exceed the bristle surface 112 of the brush plate portion 11, and the other surface of the protrusion 111 does not exceed the back surface 113 of the brush plate portion 11, that is, the protrusions 111 on the adjacent two brush plate portions 11 are both between the bristle surface 112 and the back surface 113. Among them, the deformation amount between the adjacent two brush plate portions 11 is related to the setting position of the protrusion 111, such as when the thickness of the protrusion 111 is certain, the smaller the first distance L1 between the protrusion 111 and the bristle surface 112, and / or the smaller the second distance L2 between the protrusion 111 and the bristle surface 112, the greater the distance between the two staggered protrusions 111, the greater the relative displacement amount between the adjacent two brush plate portions 11, and the deformation amount also increases.

[0084] It should be noted that the relative position of the two staggered protrusions 111 arranged along the thickness direction of the soft rubber piece 22 will also cause the deformation of the adjacent two brush plate portions 11 in different directions, such as the protrusion 111 including a first protrusion 111a and a second protrusion 111b, the first protrusion 111a is located on the side close to the back surface 113, and the second protrusion 111b is located on the side close to the bristle surface 112, that is, the second protrusion 111b and the first protrusion 111a are arranged along the height direction, when the bristles 12 and / or the brush plate portion 11 are stressed, the brush plate portion 11 with the first protrusion 111a is bulged on the side away from the first protrusion 111a towards the bristle surface 112, and vice versa.

[0085] In an optional embodiment, the distance between the protrusion 111 and the bristle surface 112 of the brush plate portion 11 is greater than the distance between the protrusion 111 and the back surface 113 of the brush plate portion 11, that is, the first distance L1 is greater than the second distance L2, so that the deformation amount of the brush plate portion 11 forming a concave surface is greater than the deformation amount of the brush plate portion 11 forming a convex surface, not only can satisfy the structure that the bristles 12 on the brush plate portion 11 form a bristle surface 112 recessed to the side of the bristles 12, but also can adjust the bristles 12 on the brush plate portion 11 to form a bristle surface 112 bulged to the side of the bristles 12, to clean the inner surface of the teeth, so that the bristles 12 can uniformly contact the tooth surface, thereby helping the cleaning of the toothbrush.

[0086] In an optional embodiment, the brush plate part 11 comprises a first brush plate part 11a and a second brush plate part 11b, the first brush plate part 11a is located at the side closest to the brush handle, and the first connecting section 211 is connected to the first brush plate part 11a. The protruding part 111 comprises a first protruding part 111a and a second protruding part 111b, the first protruding part 111a is arranged at the side of the first brush plate part 11a facing the second brush plate part 11b, and the second protruding part 111b is arranged at the side of the second brush plate part 11b facing the first brush plate part 11a. The first protruding part 111a and the second protruding part 111b are arranged in a staggered manner along the thickness direction, so that the first brush plate part 11a and the second brush plate part 11b can move in position when the bristles 12 and / or the brush plate part 11 are subjected to force, so that the bristles 12 on the brush plate part 11 can form a concave surface or a convex surface according to the deformation degree of the brush plate part 11, thereby better cleaning different areas of the teeth.

[0087] In an optional embodiment, the distance between the first protruding part 111a of the first brush plate part 11a and the bristle planting surface 112 of the brush plate part 11 is less than the distance between the second protruding part 111b of the second brush plate part 11b and the bristle planting surface 112 of the brush plate part 11, that is, the first protruding part 111a of the first brush plate part 11a and the second protruding part 111b of the second brush plate part 11b are arranged in order along the thickness direction from the bristle planting surface 112 to the back surface 113, so that the deformation amount of the first brush plate part 11a moving relative to the second brush plate part 11b and forming a concave surface is greater than the deformation amount of the first brush plate part 11a moving relative to the second brush plate part 11b and forming a convex surface, so that the bristles 12 forming a concave surface or a convex surface can better fit the molars in the back part of the teeth when penetrating into the back part of the teeth, thereby better cleaning the molars in the deeper part.

[0088] In an optional embodiment, the area of the bristle planting surface 112 of the first brush plate part 11a is greater than the area of the bristle planting surface 112 of the second brush plate part 11b, so that the first brush plate part 11a and the second brush plate part 11b can clean different teeth respectively when brushing teeth, such as the first brush plate can directly contact the incisors and canines in a large area, thereby effectively cleaning the incisors and canines; and the second brush plate part 11b can clean each corner of the teeth inside the oral cavity. The area of the bristle planting surface 112 refers to the area of the part surrounded by a straight line circumscribed around the bristle planting holes 114 constituting the outer edge of the brush plate part 11.

[0089] In an optional embodiment, the brush plate part 11 comprises a first brush plate part 11a, a second brush plate part 11b and a third brush plate part 11c, the first brush plate part 11a is located on the side close to the brush handle, the third brush plate part 11c is located on the side away from the brush handle, the second brush plate part 11b is arranged between the first brush plate part 11a and the third brush plate part 11c, and the first connecting section 211 is connected with the first brush plate part 11a or the second brush plate part 11b. The protruding part 111 comprises a first protruding part 111a, a second protruding part 111b, a third protruding part 111c and a fourth protruding part 111d, the first protruding part 111a is arranged on the side of the first brush plate part 11a facing the second brush plate part 11b, the second protruding part 111b is arranged on the side of the second brush plate part 11b facing the first brush plate part 11a, the third protruding part 111c is arranged on the side of the second brush plate part 11b facing the third brush plate part 11c, and the fourth protruding part 111d is arranged on the side of the third brush plate part 11c facing the second brush plate part 11b, so that the first brush plate part 11a, the second brush plate part 11b and the third brush plate part 11c can move in position when the bristles 12 and / or the brush plate part 11 are stressed, so that the bristles 12 on the brush plate part 11 can form a concave surface or a convex surface according to the deformation degree of the brush plate part 11, thereby better cleaning different areas of the teeth.

[0090] In an optional embodiment, the distance between the first protruding part 111a and the planting surface 112 of the brush plate part 11 is greater than the distance between the second protruding part 111b and the planting surface 112 of the brush plate part 11, that is, the first protruding part 111a of the first brush plate part 11a and the second protruding part 111b of the second brush plate part 11b are arranged in order along the thickness direction from the planting surface 112 to the back surface 113, so that the deformation amount of the first brush plate part 11a moving relative to the second brush plate part 11b and forming a concave surface on the planting surface 112 side of the bristles 12 is greater than the deformation amount of the first brush plate part 11a moving relative to the second brush plate part 11b and forming a convex surface, so that the bristles 12 forming a concave surface or a convex surface can better fit the molars in the back part when penetrating into the back part of the teeth, thereby better cleaning the molars in the deeper part.

[0091] In an optional embodiment, the distance between the third protruding part 111c and the bristle planting surface 112 of the brush plate part 11 is greater than the distance between the fourth protruding part 111d and the bristle planting surface 112 of the brush plate part 11, that is, the third protruding part 111c of the second brush plate part 11b and the fourth protruding part 111d of the third brush plate part 11c are sequentially arranged along the thickness direction from the back surface 113 to the bristle planting surface 112, so that the deformation amount of the third brush plate part 11c relative to the second brush plate part 11b and forming a concave surface is greater than the deformation amount of the third brush plate part 11c relative to the second brush plate part 11b and forming a convex surface, so that the bristles 12 can be more closely attached to the back molars when they are deeply inserted into the back molars, thereby better cleaning the molars in the deeper part.

[0092] In an optional embodiment, the area of the bristle planting surface 112 of the second brush plate part 11b is greater than the area of the bristle planting surface 112 of the third brush plate part 11c and the second brush plate part 11b, so that the first brush plate part 11a, the second brush plate part 11b and the third brush plate part 11c can clean different teeth during brushing, such as the second brush plate which can directly contact the incisors and canines in a large area, thereby effectively cleaning the incisors and canines; and the first brush plate part 11a and the third brush plate part 11c can clean each corner of the teeth inside the mouth.

[0093] In an optional embodiment, the brush plate part 11 is provided with a reinforcing part, the cross-sectional area of the reinforcing part gradually decreases along the thickness direction towards the side away from the bristle planting surface 112 of the brush plate part 11, for improving the strength of the brush plate part 11, and the gradually decreasing cross-sectional area of the reinforcing part can bring greater bending amount to the bristle planting surface 112 recessed or protruded towards the side of the bristles 12.

[0094] In an optional embodiment, the surface of the reinforcing part away from the bristle planting surface 112 is flush with the back surface 113 of the soft rubber part 22, so that the reinforcing part of the soft rubber part 22 can be exposed to provide support for the ultrasonic welding of the brush plate part 11 and the first connecting segment 211, to meet the process requirements of ultrasonic welding.

[0095] In an optional embodiment, the soft rubber part 22 completely covers the outside of the reinforcing part, which can play a role in reducing vibration, protecting teeth and improving the comfort of users during brushing.

[0096] In an optional embodiment, the first connecting segment 211 is connected to the side edge or the back surface 113 of the brush plate part 11 closest to the first connecting segment 211, so that the first connecting segment 211 can be fixed to the brush plate part 11 in an integrated structure. For example, the first connecting segment 211 is connected to the side edge or the back surface 113 of the first brush plate part 11a.

[0097] In an optional embodiment, when the first connecting section 211 is connected to the brush plate part 11 closest to the first connecting section 211, an avoiding space 101 is formed between the first connecting section 211 and the brush plate part 11 closest to the first connecting section 211, so that the brush plate part 11 closest to the first connecting section 211 can be conveniently bent and deformed. For example, when the first connecting section 211 is connected to the back surface 113 of the second brush plate part 11b, the avoiding space 101 is formed between the first connecting section 211 and the first brush plate part 11a, so that the first brush plate part 11a can be conveniently bent and deformed; or, when the first connecting section 211 is connected to the back surface 113 of the third brush plate part 11c, the avoiding space 101 is formed between the first connecting section 211 and the first brush plate part 11a and the second brush plate part 11b, so that the first brush plate part 11a and the second brush plate part 11b can be conveniently bent and deformed. In an optional embodiment, as shown in Figure 2 and Figure 3 As shown in

[0098] As shown in Figures 1 to 10 According to the second aspect of the present application, the present application provides an electric toothbrush, which comprises a handle and the brush head 100 described above, and the brush head 100 is connected to the handle through the brush rod 20 of the brush head 100.

[0099] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected. It can be a mechanical connection, or an electrical connection. It can be directly connected, or indirectly connected through an intermediate medium. It can be the communication inside two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0100] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0101] The disclosure above provides many different embodiments or examples for realizing the different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described above. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0102] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with an embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Claims

1. A brush head for an electric toothbrush, characterized in that The application relates to a toothbrush head, comprising: a brush body for cleaning the oral cavity; a brush rod comprising a hard rubber part and a soft rubber part with a hardness lower than that of the hard rubber part, the hard rubber part having a first connecting section and a second connecting section for connecting with a brush handle of an electric toothbrush, the first connecting section being connected to the second connecting section at an end away from the brush handle, the brush body being arranged on the first connecting section, and the soft rubber part being at least partially wrapped outside the hard rubber part; wherein the brush body comprises bristles and a plurality of spaced brush plate sections, the bristles being connected with the brush plate sections, each of the brush plate sections having a protruding section at one end close to another, the protruding sections of adjacent two brush plate sections being arranged in a staggered manner and partially overlapping in a thickness direction of the soft rubber part, the first connecting section being connected with at least one brush plate section, and the soft rubber part being wrapped outside the protruding sections and at least part of the brush plate sections so that the brush body can be bent and deformed by changing the positions of the brush plate sections.

2. The brush head according to claim 1, wherein the protruding sections of adjacent two brush plate sections abut each other in the thickness direction of the soft rubber part; or the protruding sections and the adjacent brush plate sections abut each other in a length direction of the brush rod; or there is a gap between the protruding sections of adjacent two brush plate sections; or there is a gap between the protruding sections and the adjacent brush plate sections. The protruding sections have arc surface structures on the sides close to the adjacent brush plate sections. The hardness of the protruding sections is lower than that of the brush plate sections; and / or the thickness of the protruding sections is lower than that of the brush plate sections; and / or the width of the protruding sections is lower than that of the brush plate sections; and / or the width of the protruding sections is greater than the thickness of the protruding sections. The brush plate sections have bristle planting surfaces and back surfaces arranged in opposite directions in the thickness direction, the surface of the protruding sections on the side close to the bristle planting surfaces does not exceed the bristle planting surfaces of the brush plate sections, and the surface of the other side of the protruding sections does not exceed the back surfaces of the brush plate sections. The distance between the protruding sections and the bristle planting surfaces of the brush plate sections is greater than the distance between the protruding sections and the back surfaces of the brush plate sections. One of the adjacent two brush plate sections is provided with a first notch, and the other of the adjacent two brush plate sections is provided with a second notch, the positions of the first notch and the second notch corresponding to the positions of the protruding sections. The brush plate sections comprise first brush plate sections and second brush plate sections, the first brush plate sections being located on the side close to the brush handle, and the first connecting section being connected with the first brush plate sections; wherein the protruding sections comprise first protruding sections and second protruding sections, the first protruding sections being arranged on the side of the first brush plate sections facing the second brush plate sections, and the second protruding sections being arranged on the side of the second brush plate sections facing the first brush plate sections, the first protruding sections and the second protruding sections being arranged in a staggered manner in the thickness direction. The distance between the first protruding sections and the bristle planting surfaces of the brush plate sections is smaller than the distance between the second protruding sections and the bristle planting surfaces of the brush plate sections.

3. The brush head of claim 1, wherein, The area of the bristle planting surfaces of the first brush plate sections is greater than the area of the bristle planting surfaces of the second brush plate sections.

4. The brush head of claim 1, wherein, ​ ​ ​ ​ 5. The brush head of claim 1, wherein, ​ 6. The brush head of claim 5, wherein, ​ 7. The brush head of claim 1, wherein, ​ 8. The brush head according to any one of claims 1 to 7, characterized in that ​ ​ 9. The brush head of claim 8, wherein, ​ 10. The brush head of claim 8, wherein, ​ 11. The brush head according to any one of claims 1 to 7, characterized in that The brush plate part comprises a first brush plate part, a second brush plate part and a third brush plate part, the first brush plate part is located on the side close to the brush handle, the third brush plate part is located on the side away from the brush handle, the second brush plate part is arranged between the first brush plate part and the third brush plate part, and the first connecting section is connected with the first brush plate part or the second brush plate part. The convex part comprises a first convex part, a second convex part, a third convex part and a fourth convex part, the first convex part is arranged on the side of the first brush plate part facing the second brush plate part, the second convex part is arranged on the side of the second brush plate part facing the first brush plate part, the third convex part is arranged on the side of the second brush plate part facing the third brush plate part, and the fourth convex part is arranged on the side of the third brush plate part facing the second brush plate part.

12. The brush head of claim 11, wherein, The distance between the first convex part and the bristle planting surface of the brush plate part is greater than the distance between the second convex part and the bristle planting surface of the brush plate part; and / or the distance between the third convex part and the bristle planting surface of the brush plate part is greater than the distance between the fourth convex part and the bristle planting surface of the brush plate part.

13. The brush head of claim 11, wherein, The area of the bristle planting surface of the second brush plate part is greater than the area of the bristle planting surface of the third brush plate part and the second brush plate part.

14. The brush head of claim 1, wherein, The reinforcing part is arranged on the brush plate part, and the cross-sectional area of the reinforcing part gradually decreases along the thickness direction towards the side away from the bristle planting surface of the brush plate part.

15. The brush head of claim 14, wherein, The surface of the side of the reinforcing part away from the bristle planting surface is flush with the back surface of the soft rubber part; or the soft rubber part completely covers the outside of the reinforcing part.

16. The brush head of claim 1, wherein, The first connecting section is connected with the side edge of the brush plate part closest to the first connecting section; and / or the first connecting section is connected with the back surface of the brush plate part closest to the first connecting section.

17. The brush head of claim 1, wherein, When the first connecting section is connected with other brush plate parts except the brush plate part closest to the first connecting section, an avoiding space is formed between the first connecting section and the brush plate part closest to the first connecting section.

18. An electric toothbrush, characterized by The toothbrush comprises a brush handle and a brush head as claimed in any one of claims 1 to 17, and the brush head is connected with the brush handle through the brush rod.

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