Brush head of electric toothbrush and electric toothbrush

Abstract

The utility model discloses a brush head of an electric toothbrush and the electric toothbrush, and the brush head comprises a brush plate assembly which comprises a brush plate and bristles, the brush plate is provided with a bristle planting area, and the bristles are fixed in the bristle planting area; the brush rod assembly comprises a brush rod and a soft rubber part, the brush rod comprises a first connecting end and a second connecting end which are opposite, the first connecting end is used for being connected with a driving assembly of the electric toothbrush, the second connecting end is provided with a first adaptive area and a second adaptive area, and the side, away from the bristle planting area, of the brush plate is fixedly connected to the first adaptive area; the second adaptive area is an area, except the first adaptive area, of the second connecting end; wherein the soft rubber piece at least covers a target area in the second adaptive area, and the target area is an area, coinciding with the projection of the brush plate in the direction perpendicular to the first adaptive area, in the back area of the brush rod. The brush head provided by the utility model has a relatively good buffering and damping effect, so that the user experience of a user in a tooth brushing process is improved.

Description

Technical Field

[0001] The present application relates to the technical field of personal care, and particularly to a brush head of an electric toothbrush and an electric toothbrush. Background Art

[0002] With the improvement of living standards, electric toothbrushes have gradually entered the daily lives of many people. People's requirements for electric toothbrushes are not simply satisfied with the ability to brush teeth, and they have begun to pay more attention to the problem of brush head contamination and the brushing experience.

[0003] Currently, the common bristle planting processes on the market are mainly divided into copper bristle planting and copper-free bristle planting. For copper bristle planting, the bristles need to be fixed on a metal sheet and then fixed on the brush head. Therefore, when a copper bristle brush head is used for a long time, it is easy to oxidize and rust, breed bacteria, and cause secondary pollution to the oral cavity. For copper-free bristle planting, the bristles are first fixed on the brush plate, and then the brush plate with bristles and the brush rod are welded together by ultrasonic waves. Since the copper-free bristle planting technology does not require the use of a metal sheet, it can avoid the problem of rust and corrosion of the metal sheet, and is more favored by users.

[0004] Based on the fact that ultrasonic welding technology is required in the manufacturing process of copper-free bristle brush heads, in order to achieve a better welding effect between the brush plate and the brush rod of the brush head during ultrasonic welding, usually the brush rod is made of a hard material, and by providing support to the hard material brush rod, the connection firmness between the brush plate and the brush rod during ultrasonic welding can be effectively improved. Therefore, currently, the copper-free bristle brush heads cannot play a good role in buffering and shock absorption, and are prone to collide with the inner wall of the oral cavity when the electric toothbrush is working, causing discomfort to the user during the brushing process and affecting the user experience. Summary of the Utility Model

[0005] The main purpose of the embodiments of the present application is to provide a brush head of an electric toothbrush and an electric toothbrush, aiming to provide a brush head with a better buffering and shock absorption effect, so as to improve the user experience of the user during the brushing process using an electric toothbrush with this brush head.

[0006] In a first aspect, the present application provides a brush head of an electric toothbrush, including:

[0007] A brush plate assembly, including a brush plate and bristles, the brush plate having a bristle planting area, and the bristles being fixed to the bristle planting area;

[0008] A brush rod assembly, including a brush rod and a soft rubber part, the brush rod including opposite first and second connection ends, the first connection end being used for connecting with the driving assembly of the electric toothbrush, the second connection end being provided with a first adaptation area and a second adaptation area, the side of the brush plate away from the bristle planting area being fixedly connected to the first adaptation area, and the second adaptation area being the area of the second connection end other than the first adaptation area;

[0009] Wherein, the soft rubber part at least covers the target area in the second adaptation area, and the target area is the area in the back area of the brush rod that coincides with the projection of the brush plate in the direction perpendicular to the first adaptation area.

[0010] Optionally, the soft rubber part covers at least part of the peripheral area of the second adaptation area, and the peripheral area is connected to the target area.

[0011] Optionally, the soft rubber part covers part of the brush plate except the hair planting area.

[0012] Optionally, the brush plate includes a first surface, a second surface and a third surface, the first surface and the second surface are arranged oppositely, and the third surface is located between the first surface and the second surface and connects the first surface and the second surface;

[0013] The hair planting area is located on the first surface, and the second surface is fixedly connected to the first adaptation area of the second connection end;

[0014] The soft rubber part at least covers the second adaptation area and the third surface.

[0015] Optionally, the connection between the second adaptation area and the third surface is in smooth transition; or, the connection between the second adaptation area and the third surface is a plane.

[0016] Optionally, the soft rubber part also covers at least part of the area of the first connection end.

[0017] Optionally, the single-layer thickness of the soft rubber part covering the brush rod is 0.4 mm - 1.6 mm; and / or, the hardness of the soft rubber part is 30° - 70°.

[0018] Optionally, the second adaptation area is provided with a first positioning part for providing rigid support; wherein, the soft rubber part covers the first positioning part.

[0019] Optionally, the first positioning part forms at least two spaced-apart rigid support surfaces; wherein, at least two spaced-apart rigid support surfaces are respectively located on opposite sides of the central axis of the brush head.

[0020] Optionally, at least two spaced-apart rigid support surfaces are arranged axially symmetrically with the central axis as the axis of symmetry.

[0021] Optionally, the first positioning part forms a rigid support surface; wherein, the central axis of the brush head passes through the rigid support surface, and the rigid support surface is located on the side of the second connection end away from the first connection end.

[0022] In a second aspect, the present application further provides an electric toothbrush, comprising: the aforementioned toothbrush head and a main body provided with a driving assembly.

[0023] As can be seen from the technical solutions provided by the present application above, for the toothbrush head of the electric toothbrush provided by the present application, a first adaptation area and a second adaptation area are provided at the second connection end of the brush rod. One side of the brush plate away from the hair planting area is fixedly connected to the first adaptation area, and the second adaptation area is the area of the second connection end except the first adaptation area; wherein, the soft rubber part at least covers the target area in the second adaptation area of the toothbrush head. By covering the soft rubber part in the target area of the second adaptation area of the toothbrush head, the shock absorption characteristics of the soft rubber part can be used to better absorb the vibration during the operation of the toothbrush head, so that the toothbrush head has a better shock absorption effect. At the same time, based on the soft rubber part being wrapped around the target area of the second adaptation area, when the user is brushing teeth, even if the target area of the toothbrush head touches the user's oral cavity, the soft rubber part can still provide an effective buffer and shock absorption effect, improving the user's brushing comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 It is a three-dimensional structure schematic diagram of the toothbrush head of the electric toothbrush provided by an embodiment of the present application;

[0026] Figure 2 It is an exploded structure schematic diagram of the toothbrush head provided by an embodiment of the present application;

[0027] Figure 3 It is a back structure schematic diagram of the toothbrush head provided by an embodiment of the present application;

[0028] Figure 4 It is a cross-sectional structure schematic diagram of the toothbrush head provided by an embodiment of the present application;

[0029] Figure 5 It is a cross-sectional structure schematic diagram of the toothbrush head provided by another embodiment of the present application;

[0030] Figure 6 It is a structure schematic diagram of the brush rod of the toothbrush head provided by the present application with a first positioning part;

[0031] Figures 7 to 9 It is a schematic diagram of various deformation structures of the first positioning part of the toothbrush head provided by the present application;

[0032] Figure 10 A three-dimensional structural schematic diagram of the electric toothbrush provided by the embodiment of the present application;

[0033] Figure 11 A three-dimensional structural schematic diagram of the main body of the electric toothbrush provided by the embodiment of the present application. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0035] In the description of the present application, unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0036] With the improvement of living standards, electric toothbrushes have gradually entered the daily lives of many people. People's requirements for electric toothbrushes are not simply to be able to brush teeth, but they begin to pay more attention to the problem of brush head contamination and the brushing experience.

[0037] Currently, the commonly used brush head hair implanting processes on the market are mainly divided into copper hair implanting and non-copper hair implanting. For copper hair implanting, the bristles need to be fixed on a metal sheet and then fixed on the brush head. Therefore, when the copper hair implanting brush head is used for a long time, it is easy to oxidize and rust, breed bacteria, and cause secondary pollution to the oral cavity. For non-copper hair implanting, the bristles are first fixed on the brush plate, and then the brush plate with bristles and the brush rod are welded together by ultrasonic waves. Because the non-copper hair implanting technology does not require the use of a metal sheet, it can avoid the problem of rust and corrosion of the metal sheet, and is more favored by users.

[0038] Based on the fact that ultrasonic welding technology is required in the manufacturing process of non-copper hair implanting brush heads, in order to achieve a better welding effect between the brush plate and the brush rod of the brush head during ultrasonic welding, usually the brush rod is made of a hard material, and by providing support to the hard material brush rod, the connection firmness between the brush plate and the brush rod during ultrasonic welding can be effectively improved. Therefore, currently, the non-copper hair implanting brush head cannot play a good role in buffering and shock absorption, and is easy to collide with the inner wall of the oral cavity when the electric toothbrush is working, causing discomfort to the user during the brushing process and affecting the user experience.

[0039] To solve the above technical problems, the present application provides a brush head of an electric toothbrush and an electric toothbrush, aiming to improve the buffering and shock absorption effect of the brush head so as to enhance the user experience during the toothbrushing process.

[0040] The following will describe in detail some embodiments of the present application with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0041] Please refer to Figures 1 to 4 , Figure 1 which is a schematic three-dimensional structure diagram of the brush head of the electric toothbrush provided by an embodiment of the present application, Figure 2 and is an exploded structure diagram of the brush head.

[0042] As Figures 1 to 4 shown, a brush head 10 of an electric toothbrush includes a brush plate assembly 11 and a brush rod assembly 12. Among them, the brush plate assembly 11 includes a brush plate 111 and bristles 112. The brush plate 111 has a hair-planting area 1111, and the bristles 112 are fixed to the hair-planting area 1111 of the brush plate 111. For example, the brush plate 111 is a non-metallic brush plate, and the hair-planting area 1111 of the brush plate 111 is provided with a plurality of hair-planting pores. The bristles 112 have opposite free ends and fixed ends, and the fixed ends of the bristles 112 are fixedly connected to the hair-planting pores in the hair-planting area 1111 of the brush plate 111, thereby realizing the fixed connection between the bristles 112 and the brush plate 111. It can be understood that the non-metallic brush plate includes, but is not limited to, plastic brush plates made of plastic materials such as ABS and PC.

[0043] The brush rod assembly 12 includes a brush rod 121 and a soft rubber member 122. The brush rod 121 includes opposite first connection end 1211 and second connection end 1212. The first connection end 1211 is used to connect with the drive assembly of the electric toothbrush. The second connection end 1212 includes a first adaptation area 1213 and a second adaptation area 1214. The side of the brush plate 111 away from the hair-planting area 111 is fixedly connected to the first adaptation area 1213, and the second adaptation area 1214 is the area of the second connection end 1212 other than the first adaptation area 1213. Among them, the soft rubber member 122 at least covers the target area in the second adaptation area 1214, and the target area is the area in the back area of the brush rod 121 that coincides with the projection of the brush plate 111 in the direction perpendicular to the first adaptation area 1213.

[0044] As Figures 3 to 4 shown, for example, the target area is the area in the back area of the brush rod 121 that coincides with the projection of the brush plate 111 in the direction perpendicular to the first adaptation area 1213, that is, the X area in the back area of the brush rod 121, and the soft rubber member 122 at least completely covers the target area X.

[0045] Optionally, the brush rod 121 is a plastic brush rod, and the hardness of the soft rubber member 122 is less than that of the brush rod 121. For example, the brush rod 121 is an ABS resin brush rod or a PC plastic brush rod.

[0046] As can be seen from the above embodiments, for the brush head 10 of the electric toothbrush provided by the present application, by providing a first adaptation area 1213 and a second adaptation area 1214 at the second connection end 1212 of the brush rod 121, one side of the brush plate 111 away from the hair planting area 1111 is fixedly connected to the first adaptation area 1213. Among them, the soft rubber member 122 at least covers the target area X of the second adaptation area 1214. The target area is the area where the projection of the brush plate 111 in the direction perpendicular to the first adaptation area 1213 coincides with the back area of the brush rod 121. By covering the soft rubber member 122 in the target area X of the second adaptation area 1214 of the brush head, and utilizing the buffer and shock absorption characteristics of the soft rubber member 122, the vibration during the operation of the brush head can be better absorbed, so that the brush head has a better shock absorption effect. At the same time, based on at least the target area X in the second adaptation area 1214 being wrapped with the soft rubber member 122, when the user is brushing teeth, even if the target area X of the brush head 10 touches the user's oral cavity, the soft rubber member 122 can still provide an effective buffer and shock absorption effect, improving the user's brushing comfort.

[0047] Such as Figure 2 And Figure 4 As shown, in some embodiments, the soft rubber member 122 covers at least a part of the peripheral area Y of the second adaptation area 114, and the peripheral area Y of the second adaptation area 114 is connected to the target area.

[0048] Optionally, the soft rubber member 122 also covers a part of the brush plate 111 other than the hair planting area 111. For example, the brush plate 111 includes a first surface 1112, a second surface 1114 and a third surface 1113. The first surface 1112 and the second surface 1114 are oppositely arranged, and the third surface 1113 is located between the first surface 1112 and the second surface 1114 and connects the first surface 1112 and the second surface 1114. The hair planting area 1111 is located on the first surface 1112, the second surface 1114 is fixedly connected to the first adaptation area 1213 of the second connection end 1212, and the soft rubber member 122 at least covers the second adaptation area 1214 and the third surface 1113.

[0049] Optionally, the connection between the second adaptation area 1214 and the third surface 1113 is smoothly transitioned; or, the connection between the second adaptation area 1214 and the third surface 1113 is a flat surface.

[0050] In this embodiment, the soft rubber member 122 covers at least a part of the peripheral region Y of the second fitting region 1214 and the third surface 1113. That is, the more the soft rubber member 122 wraps around the brush head 10 except for the hair implanting region 1111, the better the buffer and shock absorption effect of the brush head 10.

[0051] As Figure 5 shown, in some embodiments, the soft rubber member 122 also covers at least a part of the first connection end 1211 of the brush rod 121.

[0052] Exemplarily, the soft rubber member 122 covers the second fitting region 1214 of the second connection end 1212. At the same time, the soft rubber member 122 wraps around at least a part of the first connection end 1211, so that the brush head 10 has a better buffer and shock absorption effect. For example, the soft rubber member 122 wraps around the second fitting region 1214 of the second connection end 1212 and the entire outer surface of the first connection end 1211, making the shock absorption and buffering effect of the brush head 10 better.

[0053] In some embodiments, the hardness of the soft rubber member 122 is 30° - 70°. Among them, the soft rubber member 122 includes but is not limited to TPE soft rubber and TPU soft rubber. Setting the hardness of the soft rubber member 122 within a reasonable range can enable the soft rubber member 122 to provide an effective buffer and shock absorption effect during the brushing process of the user, improving the user experience.

[0054] At the same time, during the manufacturing process of the brush head 10, after the brush rod 121 and the brush plate 111 are connected by ultrasonic welding, the soft rubber member 122 is wrapped around the corresponding region of the brush rod 121 through the overmolding process. The overmolding temperature is close to the hot melting temperature of the connection between the bristles 112 and the brush plate 111 (for example, the overmolding temperature is 180 - 230°C, and the hot melting temperature of the bristles 112 and the brush plate 111 is above 200°C). Moreover, the higher the hardness of the soft rubber member 122, the higher the required overmolding temperature. Therefore, setting the hardness of the soft rubber member 122 within a reasonable range can reduce the influence on the connection effect between the bristles 112 and the brush plate 111 after hot melting connection.

[0055] In some embodiments, the single-layer thickness of the soft rubber member 122 covering the brush rod 121 is 0.4mm - 1.6mm. That is, the single-layer thickness of the soft rubber layer formed by the soft rubber member 122 covering the brush rod 121 is 0.4mm - 1.6mm. If the thickness of the soft rubber member 122 is too thick, the weight of the brush head 10 will be too heavy, resulting in insufficient vibration power of the electric toothbrush. If the thickness of the soft rubber member 122 is too thin, the shock absorption and buffering effect of the brush head 10 will be affected. Therefore, setting the thickness of the soft rubber member 122 within a reasonable range can effectively improve the brushing comfort of the user during the brushing process.

[0056] Meanwhile, during the manufacturing process of the brush head 10, after connecting the brush rod 121 and the brush plate 111 by ultrasonic welding, the soft rubber part 122 is wrapped around the corresponding area of the brush rod 121 through the overmolding process. The overmolding temperature is close to the hot melting temperature of the bristles 112 and the brush plate 111 (for example, the overmolding temperature is 180 - 230°C, and the hot melting temperature of the bristles 112 and the brush plate 111 is above 200°C). The overmolding will affect the hot melting connection effect of the bristles 112 and the brush plate 111. Therefore, setting the thickness of the soft rubber part 122 within a reasonable range can reduce the influence on the connection effect of the bristles 112 and the brush plate 111 during the overmolding process.

[0057] As Figure 4 or Figure 5 shown, in some embodiments, the way the first connection end 1211 of the brush rod 121 is connected to the drive assembly of the electric toothbrush can be that the first connection end 1211 of the brush rod 121 is provided with a drive connection part, and the brush rod 121 forms a structural engagement or a threaded fit with the drive assembly of the electric toothbrush through the drive connection part, so that the brush head 10 can be connected to the drive assembly of the electric toothbrush through the brush rod 121.

[0058] In some embodiments, the way the first connection end 1211 of the brush rod 121 is connected to the drive assembly of the electric toothbrush can be that the brush rod assembly 12 further includes a plug-in part 123, the plug-in part 123 is arranged at the first connection end 1211, and the brush head 10 is detachably connected to the drive assembly of the electric toothbrush through the plug-in part 123.

[0059] Among them, the ways of the detachable connection between the plug-in part 123 and the drive assembly of the electric toothbrush include but are not limited to structural clamping, threaded connection, interference fit, etc.

[0060] It can be understood that the plug-in part 123 can be a metal plug-in part, an alloy plug-in part or a non-metal plug-in part, which is not limited here.

[0061] Please refer to Figures 6 to 9 , in some embodiments, the second adaptation area 1214 of the brush rod 121 is provided with a first positioning part 1215, and the soft rubber part 122 covers the first positioning part 1215. During the ultrasonic welding process of the brush rod 121 and the brush plate 111, the first positioning part 1215 arranged in the second adaptation area 1214 provides relatively stable positioning support for the brush rod 121, so that the ultrasonic welding effect of the brush rod 121 and the brush plate 111 is better.

[0062] It can be understood that the first positioning part 1215 is at least one, that is, the first positioning part 1215 can be one, two or more, and each first positioning part 1215 can form a rigid support surface.

[0063] In some embodiments, there is at least one rigid support surface formed by the first positioning portion 1215. That is, the number of rigid support surfaces formed by the first positioning portion 1215 can be one, two, three, or four, which is not limited herein. Among them, when there are at least two rigid support surfaces formed by the first positioning portion 1215, the at least two rigid support surfaces are spaced apart.

[0064] That is to say, the first positioning portion 1215 formed by the brush rod 121 can be one or more, and each first positioning portion 1215 can form a corresponding rigid support surface.

[0065] Optionally, all the rigid support surfaces formed by the first positioning portion 1215 are flat surfaces, or at least one of the rigid support surfaces formed by the first positioning portion 1215 is a flat surface. When the rigid support surface is set as a flat surface, it is convenient for surface contact with the ultrasonic welding equipment, effectively improving the ultrasonic welding effect of the brush head.

[0066] Optionally, all the rigid support surfaces formed by the first positioning portion 1215 are curved surfaces, or at least one of the rigid support surfaces formed by the first positioning portion 1215 is a curved surface. When all the rigid support surfaces are set as curved surfaces, even if the rigid support surfaces touch the inside of the user's oral cavity during the brushing process, the arc-shaped rigid support surface design has a better force unloading effect, which can effectively reduce the discomfort caused by the contact between the rigid support surface and the user's oral cavity.

[0067] Optionally, the periphery of the rigid support surface formed by the first positioning portion 1215 is chamfered. Even if the rigid support surface touches the inside of the user's oral cavity during the brushing process, the chamfer design can effectively reduce the discomfort caused by the contact between the rigid support surface and the user's oral cavity.

[0068] In this embodiment, a first adaptation area 1213 and a second adaptation area 1214 are provided at the second connection end 1212 of the brush rod 10. The first adaptation area 1213 is used to connect with the brush plate 111, and a first positioning portion 1215 is provided in the second adaptation area 1214. During the connection process between the first connection portion 1216 and the brush plate 111, positioning support is provided based on the first positioning portion 1215, so that when the ultrasonic welding equipment applies force to the brush plate 111 and the brush rod 121 to be ultrasonically welded, and the first connection portion 1216 of the brush rod 121 and the brush plate 111 are connected by ultrasonic welding, the mutual acting force between them is more stable, which can effectively improve the stability and firmness of the connection during the connection of the brush plate 111 and the first connection portion 1216 by ultrasonic welding.

[0069] In some embodiments, the first positioning portion 1215 forms a rigid support surface. The rigid support surface includes a first rigid support area and a second rigid support area connected to the first rigid support area, and the first rigid support area and the second rigid support area are axially symmetrically arranged with the central axis of the brush head 10 as the axis of symmetry.

[0070] As Figure 6 shown, the central axis L of the brush head 10 divides the rigid support surface formed by the first positioning portion 1215 into a symmetric first rigid support area A1 and a second rigid support area A2. Based on the symmetric arrangement of the first rigid support area A1 and the second rigid support area A2 with respect to the central axis L of the brush head 10, during the ultrasonic welding process of the brush rod 121 of the brush head 10 and the brush plate 111 of the brush plate main member 11, a more stable positioning support can be provided.

[0071] In some embodiments, the first positioning portion 1215 exposed from the soft rubber member 122 forms a rigid support surface; the central axis of the brush head 10 passes through the rigid support surface, and the rigid support surface is located on the side of the second connection end 1212 away from the first connection end 1211.

[0072] As Figure 7 shown, the first positioning portion 1215 is arranged on the side of the second connection end 1212 away from the first connection end 1211, so that the rigid support surface formed by the first positioning portion 1215 is located on the side of the second connection end 1212 away from the first connection end 1211. Arranging the first positioning portion 1215 on the side of the second connection end 1212 away from the first connection end 1211 can effectively reduce the possibility of the first positioning portion 1215 coming into contact with the oral cavity.

[0073] In some embodiments, the first positioning portion 1215 forms at least two rigid support surfaces; the central axis of the brush head passes through the rigid support surfaces, and the at least two rigid support surfaces are arranged at intervals along the extension direction of the central axis.

[0074] As Figure 8 shown, the brush rod 121 is provided with at least two first positioning portions 1215 arranged at intervals. Each first positioning portion 1215 forms a corresponding rigid support surface, and the two rigid support surfaces are arranged at intervals along the extension direction of the central axis L. Thus, during the ultrasonic welding process of the brush rod 121 of the brush head 10 and the brush plate 111 of the brush plate main member 11, a more stable positioning support can be provided by the multiple rigid support surfaces arranged at intervals.

[0075] In some embodiments, the first positioning portion 1215 forms at least two rigid support surfaces arranged at intervals; the at least two rigid support surfaces arranged at intervals are respectively located on opposite sides of the central axis of the brush head 10.

[0076] Optionally, the first positioning portion 1215 exposed outside the soft rubber member 122 forms at least two hard support surfaces arranged at intervals and symmetrically arranged with respect to the central axis L as the axis of symmetry.

[0077] As Figure 9 shown, there are two first positioning portions 1215, and each first positioning portion 1215 forms a corresponding hard support surface. The two hard support surfaces are respectively arranged at intervals on opposite sides of the central axis L of the brush head 10. Preferably, the two first positioning portions 1215 are symmetrically arranged at intervals on opposite sides of the central axis L, and each first positioning portion 1215 correspondingly forms a hard support surface, that is, the two hard support surfaces are symmetrically arranged with respect to the central axis L as the axis of symmetry. By providing hard support through multiple symmetrically arranged hard support surfaces, more stable positioning support can be provided during the ultrasonic welding process of the brush rod 121 of the brush head 10 and the brush plate 111 of the main brush plate member 11.

[0078] Please refer to Figure 10 and Figure 11 , the present application also provides an electric toothbrush 100 including a main body 20 and a brush head 10. Among them, the main body 20 includes a driving component 21 and a control component 22 connected to the driving component 21. Among them, the driving component 21 is detachably connected to the brush head 10 and is used to drive the brush head 10 to act. The user can trigger the control component 22 by pressing, sliding, pushing and pulling, etc., so as to control the driving component 21 to execute corresponding actions through the control component 22.

[0079] Optionally, the detachable connection method between the driving component 21 and the brush head 10 includes but is not limited to structural engagement and threaded connection.

[0080] Exemplarily, the control component 22 is connected to the driving component 21 through a connecting wire to supply power to the driving component 21 to drive the driving component 21 to move, so as to drive the brush head 10 to operate through the driving component 21. The control component 22 includes a circuit board and a power supply module. The power supply module includes but is not limited to a battery. The circuit board can be a single-sided board, a double-sided board or a multi-layer board. The present application does not make specific limitations on the type, model and size of the circuit board, etc.

[0081] It should be understood that the terms used in the description of the present application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the description of the present application and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0082] It should also be understood that the term "and / or" used in the specification and appended claims of this application refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations. It should be noted that, in this text, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or system comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or system. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or system comprising that element.

[0083] The serial numbers of the embodiments of the present application above are only for description and do not represent the superiority or inferiority of the embodiments. The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A brush head for an electric toothbrush, characterized in that: include: A brush plate assembly comprises a brush plate and bristles, wherein the brush plate has a bristle planting area, and the bristles are fixed to the bristle planting area; A brush rod assembly, comprising a brush rod and a soft rubber part, wherein the brush rod comprises a first connecting end and a second connecting end opposite to each other, wherein the first connecting end is used to connect to the driving assembly of the electric toothbrush, and the second connecting end is provided with a first adapting area and a second adapting area, and the side of the brush plate away from the hair planting area is fixedly connected to the first adapting area, and the second adapting area is the area of ​​the second connecting end excluding the first adapting area; The soft rubber part at least covers a target area in the second matching area, and the target area is an area in the back area of ​​the brush rod that overlaps with a projection of the brush plate in a direction perpendicular to the first matching area.

2. The brush head according to claim 1, characterized in that: The soft plastic component covers at least a portion of a peripheral area of ​​the second fitting area, and the peripheral area is connected to the target area.

3. The brush head according to claim 2, characterized in that: The soft rubber part covers a part of the brush plate except the hair planting area.

4. The brush head according to claim 3, characterized in that: The brush plate comprises a first surface, a second surface and a third surface, the first surface and the second surface are arranged opposite to each other, and the third surface is located between the first surface and the second surface and connects the first surface and the second surface; The hair implantation area is located on the first surface, and the second surface is fixedly connected to the first adapting area of ​​the second connecting end; The soft plastic component at least covers the second adaptation area and the third surface.

5. The brush head according to claim 4, characterized in that: The connection between the second adaptation area and the third surface has a smooth transition; Alternatively, the connection between the second adaptation area and the third surface is planar.

6. The brush head according to claim 1, characterized in that: The soft plastic component also covers at least a partial area of ​​the first connecting end.

7. The brush head according to any one of claims 1 to 6, characterized in that: The single layer thickness of the soft rubber part covering the brush rod is 0.4 mm-1.6 mm; and / or the hardness of the soft rubber part is 30°-70°.

8. The brush head according to any one of claims 1 to 6, characterized in that: The second adaptation area is provided with a first positioning portion for providing rigid support; wherein the soft rubber component covers the first positioning portion.

9. The brush head according to claim 8, characterized in that: The first positioning portion forms at least two rigid support surfaces disposed at intervals; Wherein, at least two hard support surfaces arranged at intervals are respectively located on opposite sides of the central axis of the brush head.

10. The brush head according to claim 9, characterized in that: At least two rigid support surfaces disposed at intervals are disposed axially symmetrically with the central axis as a symmetry axis.

11. The brush head according to claim 8, characterized in that: The first positioning portion forms a hard supporting surface; wherein the central axis of the brush head passes through the hard supporting surface, and the hard supporting surface is located on a side of the second connecting end away from the first connecting end.

12. An electric toothbrush, characterized in that: include: A brush head as described in any one of claims 1 to 11 and a host provided with a driving assembly.

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