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, and the bristles are connected with the brush plate and fixed on the brush plate; 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 comprises a first end face and a second end face which are opposite, and the first end face is provided with a first connecting part used for being connected with a brush plate; the first connecting part and the brush plate are connected through ultrasonic welding, and the second end face is provided with a first supporting part used for providing rigid supporting; wherein the soft rubber piece at least covers a partial area of the second connecting end, and at least part of the first supporting part is exposed out of the soft rubber piece. The brush head provided by the utility model has relatively good connection firmness and a relatively good damping effect.

Description

Technical Field

[0001] This application relates to the field of personal care technologies, 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 begin 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 planting 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 planting 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 planting 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.

[0005] Therefore, how to make the brush head have both good connection firmness and good shock absorption effect has become a problem for those skilled in the art. Summary of the Utility Model

[0006] The main purpose of the embodiments of this application is to provide a brush head of an electric toothbrush and an electric toothbrush, aiming to make the brush head have both good connection firmness and good shock absorption effect.

[0007] In a first aspect, this application provides a brush head of an electric toothbrush, including:

[0008] The brush plate assembly includes a brush plate and bristles. The bristles are connected to and fixed on the brush plate. The brush rod assembly includes a brush rod and a soft rubber part. The brush rod includes a first connection end and a second connection end which are opposite to each other. The first connection end is used to connect with the drive assembly of the electric toothbrush. The second connection end includes a first end face and a second end face which are arranged oppositely. The first end face is provided with a first connection part for connecting with the brush plate, and the first connection part and the brush plate are connected by ultrasonic welding. The second end face is provided with a first support part for providing rigid support.

[0009] Wherein, the soft rubber part at least covers a part of the second connection end, and at least part of the first support part is exposed outside the soft rubber part.

[0010] Optionally, there is at least one rigid support surface formed by the first support part exposed outside the soft rubber part.

[0011] Wherein, when there are at least two rigid support surfaces formed by the first support part exposed outside the soft rubber part, at least two of the rigid support surfaces are arranged at intervals.

[0012] Optionally, the first support part exposed outside the soft rubber part forms a rigid support surface.

[0013] Wherein, 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 toothbrush head as the axis of symmetry.

[0014] Optionally, the first support part exposed outside the soft rubber part forms at least two rigid support surfaces arranged at intervals.

[0015] Wherein, at least two rigid support surfaces arranged at intervals are respectively located on opposite sides of the central axis of the toothbrush head.

[0016] Optionally, at least two rigid support surfaces arranged at intervals are axially symmetrically arranged with the central axis as the axis of symmetry.

[0017] Optionally, the first support part exposed outside the soft rubber part forms a rigid support surface.

[0018] Wherein, the central axis of the toothbrush 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.

[0019] Optionally, the first support part exposed outside the soft rubber part forms at least two rigid support surfaces. Wherein, the central axis of the toothbrush head passes through the rigid support surface, and at least two of the rigid support surfaces are arranged at intervals along the extension direction of the central axis.

[0020] Optionally, all of the rigid support surfaces are flat surfaces; alternatively, all of the rigid support surfaces are curved surfaces; alternatively, at least one of the rigid support surfaces is a flat surface, or at least one of the rigid support surfaces is a curved surface.

[0021] Optionally, the circumferential side of the rigid support surface is chamfered.

[0022] Optionally, the soft rubber member covering a partial area of the second connection end forms a soft wrapping surface; wherein, the contact area at the junction of the soft wrapping surface and the rigid support surface has a smooth transition, or the contact area at the junction of the soft wrapping surface and the rigid support surface is a flat surface.

[0023] Optionally, the soft rubber member covering a partial area of the second connection end forms a soft wrapping surface; wherein, a first area of the soft wrapping surface is larger than a second area of the rigid support surface.

[0024] Optionally, the soft rubber member covering a partial area of the second connection end forms a soft wrapping surface; a maximum height of the rigid support surface relative to a preset reference surface is less than a maximum height of the soft wrapping surface relative to the preset reference surface.

[0025] Optionally, the hardness of the soft rubber member is 30°-70°.

[0026] Optionally, the soft rubber member also covers at least a partial area of the first connection end.

[0027] Optionally, the brush rod assembly further includes a plug-in member, the plug-in member is arranged at the first connection end, and the brush head is detachably connected to the driving assembly of the electric toothbrush through the plug-in member.

[0028] In a second aspect, the present application further provides an electric toothbrush, including: the aforementioned brush head and a main body provided with a driving assembly.

[0029] As can be seen from the technical solutions provided by the present application above, for the brush head of the electric toothbrush provided by the present application, by providing opposite first end surface and second end surface on the brush rod, a first connection portion is arranged on the first end surface and is connected to the brush plate through the first connection portion, and a first support portion providing rigid support is arranged on the second end surface.

[0030] During the connection process between the first connecting portion and the brush plate, based on the hard support provided by the first supporting portion, when the first connecting portion and the brush plate 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 between the brush plate and the first connecting portion during the connection process by ultrasonic welding. At the same time, the brush head is also provided with a soft rubber part, which at least covers a part of the second connecting end through the soft rubber part. By using the buffering and shock-absorbing characteristics of the soft rubber part, it can make the soft rubber still provide an effective buffering and shock-absorbing effect when the brush head touches the inner part of the oral cavity during the brushing process, thus improving the brushing comfort of the user.

[0031] Furthermore, in the conventional preparation process of the brush head, it is usually necessary to complete the forming of the brush rod in a mold. After the brush rod is formed, while using the hard characteristics of the brush rod to support the brush rod, the ultrasonic welding technology is used to ultrasonically weld the brush rod and the brush plate in the brush plate assembly to connect the brush rod and the brush plate assembly. After the brush rod and the brush plate assembly are connected, the assembly of the brush rod and the brush plate assembly is placed in another mold for the rubber coating process of the soft rubber part to make the soft rubber part cover a part of the brush rod. In this process, two preparation molds are required, and the preparation process is relatively complicated.

[0032] In the technical solution provided by this application, based on the fact that at least part of the first supporting portion is exposed outside the soft rubber part, thus the brush rod and the soft rubber part can be formed in the same mold during the manufacturing process of the brush head. Then, through the first supporting portion exposed outside the wrapped soft rubber part to provide hard support for the brush rod, and then perform the ultrasonic welding of the brush rod and the brush plate in the brush plate assembly, making the preparation of the brush head more efficient and simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of this application, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0034] Figure 1 Schematic perspective view of the brush head of an electric toothbrush provided by an embodiment of this application;

[0035] Figure 2 Exploded structure diagram of the brush head provided by an embodiment of this application;

[0036] Figure 3 Schematic cross-sectional view of the brush head provided by an embodiment of this application;

[0037] Figures 4 to 7 Schematic diagrams of various deformed structures of the first supporting portion of the brush head provided by this application;

[0038] Figure 8 Schematic diagram of the height relationship between the hard support surface formed by the first support part of the brush head provided in the embodiment of the present application and the soft wrapping surface formed by the soft rubber part with respect to the reference surface;

[0039] Figure 9 Schematic three-dimensional structure diagram of the electric toothbrush provided in the embodiment of the present application;

[0040] Figure 10 Schematic three-dimensional structure diagram of the main body of the electric toothbrush provided in the embodiment of the present application. Detailed implementation manners

[0041] 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.

[0042] 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 components. 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.

[0043] 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 begin to pay more attention to the problem of brush head contamination and the brushing experience.

[0044] 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 board, and then the brush board 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 metal sheets, it can avoid the problem of rust and corrosion of metal sheets and is more favored by users.

[0045] Based on the need to use ultrasonic welding technology in the manufacturing process of copper-free implantable brush heads, in order to achieve better welding effects between the brush plate and the brush rod of the brush head during ultrasonic welding, the brush rod is usually made of hard materials. 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, the current copper-free implantable 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 users during the brushing process and affecting the user experience.

[0046] To solve the above technical problems, the present application provides a brush head and an electric toothbrush of an electric toothbrush, aiming to balance the brush head having better connection firmness and better shock absorption effect.

[0047] 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.

[0048] Please refer to Figures 1 to 3 , Figure 1 which is a schematic perspective view of the brush head of the electric toothbrush provided by an embodiment of the present application, Figure 2 and is an exploded structural view of the brush head.

[0049] As Figures 1 to 3 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, and the bristles 112 are connected to and fixed on the brush plate 111. For example, the brush plate 111 is a non-metallic brush plate, and the brush plate 111 is provided with implanting pores. The bristles 112 have opposite free ends and fixed ends, and the fixed ends of the bristles 112 are fixedly connected to the implanting pores 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.

[0050] The brush rod assembly 12 includes a brush rod 121 and a soft rubber part 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 driving component of the electric toothbrush. The second connection end 1212 includes a first end face 1213 and a second end face 1214 arranged opposite to each other. The first end face 1213 is provided with a first connection part 1216 for connecting with the brush plate 111, and the first connection part 1216 and the brush plate 111 are connected by ultrasonic welding. The second end face 1214 is provided with a first support part 1215 for providing hard support. Among them, the soft rubber part 122 at least covers a part of the area of the second connection end 1212, and the first support part 1215 is at least partially exposed outside the soft rubber part 122.

[0051] Optionally, the brush rod 121 is a plastic brush rod. For example, the brush rod 121 is an ABS resin brush rod or a PC plastic brush rod.

[0052] In this embodiment, the second connection end 1212 of the brush rod 10 is provided with opposite first and second end faces 1213 and 1214. The first end face 1213 is provided with a first connection portion 1216 and is connected to the brush plate through the first connection portion 1216. A first support portion 1215 for providing rigid support is provided on the second end face 1214. During the connection process between the first connection portion 1216 and the brush plate 111, based on the rigid support provided by the first support portion 1215, it is convenient for the ultrasonic welding device to apply force to the brush plate 111 and the brush rod 121 to be ultrasonically welded. When the first connection portion 1216 of the brush rod 121 and the brush plate 111 are connected by ultrasonic welding, the mutual force between them is more stable, which can effectively improve the stability and firmness of the connection between the brush plate 111 and the first connection portion 1216 during the connection by ultrasonic welding. At the same time, the brush head 10 is also provided with a soft rubber member 122, which at least covers a part of the region of the second connection end 1212. By using the buffer and shock absorption characteristics of the soft rubber member, it can make the soft rubber still provide an effective buffer and shock absorption effect when the brush head touches the inside of the oral cavity during the brushing process, improving the brushing comfort of the user.

[0053] Furthermore, in the conventional preparation process of the brush head 10, it is usually necessary to complete the molding of the brush rod 121 in a mold. After the brush rod 121 is molded, while using the rigid characteristics of the brush rod 121 to support the brush rod 121, the ultrasonic welding technology is used to ultrasonically weld the brush rod 121 and the brush plate 11 in the brush plate assembly 11 to connect the brush rod 121 and the brush plate assembly 11. After the brush rod 121 and the brush plate assembly 11 are connected, the assembly of the brush rod 121 and the brush plate assembly 11 is placed in another mold for the encapsulation process of the soft rubber member 122 to make the soft rubber member 122 cover a part of the region of the brush rod 121. In this process, two preparation molds are required, and the preparation process is relatively complicated.

[0054] In this application, based on the fact that the first support portion 1215 is at least partially exposed outside the soft rubber member 122, the brush rod 121 and the soft rubber member 122 can be molded in the same mold during the manufacturing process of the brush head. In the assembly of the molded brush rod 121 and the soft rubber member 122, the first support portion 1215 is at least partially exposed outside the soft rubber member 122. Then, the ultrasonic welding of the brush rod 121 and the brush plate 111 in the brush plate assembly 11 is performed by providing rigid support for the brush rod 121 through the first support portion 1215 exposed outside the wrapped soft rubber member, making the preparation of the brush head more efficient and simple.

[0055] 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 buffering and shock-absorbing effect during the brushing process, improving the user experience.

[0056] At the same time, during the ultrasonic welding process of the brush rod 121 and the brush plate assembly 11, the soft rubber member 122 is not easily melted and thermally generated bubbles.

[0057] In some embodiments, the soft rubber member 122 also covers at least a part of the first connection end 1211. Exemplarily, the soft rubber member 122 covers the area of the second end face 1214 of the second connection end 1212 except for the area where the first support portion 1215 is provided. At the same time, the soft rubber member 122 wraps at least a part of the first connection end 1211, so that the brush head 10 has a better buffering and shock-absorbing effect. For example, the soft rubber member 122 wraps the entire outer surface of the first connection end 1211, such as Figure 2 and Figure 3 shown.

[0058] In some embodiments, the way of connecting the first connection end 1211 of the brush rod 121 to the driving assembly of the electric toothbrush can be that a driving connection portion is provided at the first connection end 1211 of the brush rod 121, and the brush rod 121 forms a structural engagement or a threaded fit with the driving assembly of the electric toothbrush through the driving connection portion, so that the brush head 10 can be connected to the driving assembly of the electric toothbrush through the brush rod 121.

[0059] In some embodiments, the way of connecting the first connection end 1211 of the brush rod 121 to the driving assembly of the electric toothbrush can be that the brush rod assembly 12 further includes a plug-in member 123, the plug-in member 123 is arranged at the first connection end 1211, and the brush head 10 is detachably connected to the driving assembly of the electric toothbrush through the plug-in member 123.

[0060] Among them, the ways of detachably connecting the plug-in member 123 to the driving assembly of the electric toothbrush include, but are not limited to, structural clamping, threaded connection, interference fit, etc. Such as Figure 3 and Figure 4 shown.

[0061] It can be understood that the plug-in member 123 can be a metal plug-in member, an alloy plug-in member or a non-metal plug-in member, which is not limited here.

[0062] In some embodiments, there is at least one hard support surface formed by the first support portion 1215 exposed outside the soft rubber member 122. That is, the number of hard support surfaces formed by the first support portion 1215 can be one, two, three, or four, which is not limited herein. Among them, when there are at least two hard support surfaces formed by the first support portion 1215 exposed outside the soft rubber member 122, the at least two hard support surfaces are spaced apart.

[0063] That is to say, the first support portion 1215 formed by the brush rod 121 can be one or more, and each first support portion 1215 can form a corresponding hard support surface.

[0064] Optionally, all the hard support surfaces formed by the first support portion 1215 exposed outside the soft rubber member 122 are flat surfaces, or at least one of the hard support surfaces formed by the first support portion 1215 exposed outside the soft rubber member 122 is a flat surface. When the hard 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.

[0065] Optionally, all the hard support surfaces formed by the first support portion 1215 exposed outside the soft rubber member 122 are curved surfaces, or at least one of the hard support surfaces formed by the first support portion 1215 exposed outside the soft rubber member 122 is a curved surface. When all the hard support surfaces are set as curved surfaces, during the brushing process, even if the hard support surface touches the inside of the user's oral cavity, the arc-shaped hard support surface design has a better force unloading effect, which can effectively reduce the discomfort caused by the contact between the hard support surface and the user's oral cavity.

[0066] Optionally, the periphery of the hard support surface formed by the first support portion 1215 exposed outside the soft rubber member 122 is chamfered. During the brushing process, even if the hard support surface touches the inside of the user's oral cavity, the chamfer design can effectively reduce the discomfort caused by the contact between the hard support surface and the user's oral cavity.

[0067] In some embodiments, the first support portion 1215 exposed outside the soft rubber member 122 forms a hard support surface. The hard support surface includes a first hard support area and a second hard support area connected to the first hard support area, and the first hard support area and the second hard support area are axially symmetrically arranged with the central axis of the brush head 10 as the axis of symmetry.

[0068] As Figure 4 shown, the central axis L of the brush head 10 divides the hard support surface formed by the first support portion 1215 into a symmetric first hard support area A1 and a second hard support area A2. Based on the symmetric arrangement of the first hard support area A1 and the second hard 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 hard support can be provided.

[0069] In some embodiments, the first support portion 1215 exposed outside the soft rubber member 122 forms a hard support surface; wherein, the central axis of the brush head 10 passes through the hard support surface, and the hard support surface is located on the side of the second connection end 1212 away from the first connection end 1211.

[0070] As Figure 5 shown, the first support portion 1215 is disposed on the side of the second connection end 1212 away from the first connection end 1211, so that the hard support surface formed by the first support portion 1215 is located on the side of the second connection end 1212 away from the first connection end 1211. Disposing the first support 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 support portion 1215 contacting the oral cavity.

[0071] In some embodiments, the first support portion 1215 exposed outside the soft rubber member 122 forms at least two hard support surfaces;

[0072] Wherein, the central axis of the brush head passes through the hard support surface, and the at least two hard support surfaces are respectively arranged at intervals along the extending direction of the central axis.

[0073] As Figure 6 shown, the brush rod 121 is provided with at least two first support portions 1215 arranged at intervals, each first support portion 1215 forms a corresponding hard support surface, and the two hard support surfaces are respectively arranged at intervals along the extending 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 body 11, more stable hard support can be provided by the multiple hard support surfaces arranged at intervals.

[0074] In some embodiments, the first support portion 1215 exposed outside the soft rubber member 122 forms at least two hard support surfaces arranged at intervals; wherein, the at least two hard support surfaces arranged at intervals are respectively located on opposite sides of the central axis of the brush head 10.

[0075] Optionally, the first support portion 1215 exposed outside the soft rubber member 122 forms at least two hard support surfaces arranged at intervals and is axially symmetrically arranged with the central axis L as the axis of symmetry.

[0076] As Figure 7As shown, there are two first support portions 1215 exposed outside the soft rubber member 122. Each first support portion 1215 forms a corresponding rigid support surface. The two rigid support surfaces are respectively arranged at opposite sides of the central axis L of the brush head 10 at intervals. Preferably, the two first support portions 1215 are symmetrically arranged at opposite sides of the central axis L at intervals. Each first support portion 1215 correspondingly forms a rigid support surface, that is, the two rigid support surfaces are axially symmetrically arranged with the central axis L as the axis of symmetry. By providing rigid support through multiple symmetrically arranged rigid support surfaces, more stable rigid 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 brush plate main member 11.

[0077] In some embodiments, the soft rubber member 122 covering a partial area of the second connection end 1212 forms a soft wrapping surface, and the first support portion 1215 exposed outside the soft rubber member 122 forms a rigid support surface. Among them, the maximum height of the rigid support surface relative to the preset reference surface is less than the maximum height of the soft wrapping surface relative to the preset reference surface.

[0078] As Figure 8 shown, the maximum height of the rigid support surface formed by the first support portion 1215 relative to the preset reference surface M is H2, and the maximum height of the soft wrapping surface formed after the soft rubber member 122 wraps the second connection end relative to the preset reference surface M is H1, where H2 < H1. Based on the fact that the maximum height of the soft wrapping surface is greater than the maximum height of the rigid support surface, the probability of the rigid support surface contacting the oral cavity during the user's brushing process with the brush head 10 can be effectively reduced, thereby improving the comfort of the user's brushing.

[0079] In some embodiments, the soft rubber member covering a partial area of the second connection end forms a soft wrapping surface, and the first support portion 1215 exposed outside the soft rubber member 122 forms a rigid support surface. Among them, the contact area at the junction of the soft wrapping surface and the rigid support surface has a smooth transition, or the contact area at the junction of the soft wrapping surface and the rigid support surface is a plane, so that dirt is not easily hidden in the contact area at the junction of the soft wrapping surface and the rigid support surface during the brushing process.

[0080] In some embodiments, the soft rubber member covering a partial area of the second connection end forms a soft wrapping surface, and the first support portion 1215 exposed outside the soft rubber member 122 forms a rigid support surface. Among them, the first area of the soft wrapping surface is greater than the second area of the rigid support surface. When there are multiple rigid support surfaces, the second area is the sum of the areas of each rigid support surface. Based on the fact that the area of the soft wrapping surface is greater than the area of the rigid support surface, the shock absorption and buffering effect of the brush head 10 during the brushing process can be effectively improved.

[0081] Please refer to Figure 9 and Figure 10, this application also provides an electric toothbrush 100, which includes 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. 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.

[0082] Optionally, the detachable connection method between the driving component 21 and the brush head 10 includes but is not limited to structural engagement and screw connection.

[0083] Exemplarily, the control component 22 is connected to the driving component 21 through a connecting wire to supply power to the driving component 21, so as to drive the driving component 21 to move, and thus 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. This application does not make specific limitations on the type, model and size of the circuit board.

[0084] It should be understood that the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. As used in the specification of this 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.

[0085] It should also be understood that the term "and / or" used in the specification of this application and the appended claims refers to any combination and all possible combinations of one or more of the related listed items, and includes these combinations. It should be noted that in this article, the term "comprises", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or system including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or system. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or system including the element.

[0086] 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 is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed by this application can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of this application. Therefore, the protection scope of this 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, comprising a brush plate and bristles, wherein the bristles are connected to and fixed to the brush plate; 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 comprises a first end face and a second end face opposite to each other, wherein the first end face is provided with a first connecting portion for connecting to the brush plate, and the first connecting portion and the brush plate are connected by ultrasonic welding, and the second end face is provided with a first supporting portion for providing a rigid support; The soft plastic component at least covers a partial area of ​​the second connecting end, and the first supporting portion is at least partially exposed from the soft plastic component.

2. The brush head according to claim 1, characterized in that: The first supporting portion exposed outside the soft rubber component forms at least one hard supporting surface; Wherein, when there are at least two hard supporting surfaces formed by the first supporting portion exposed outside the soft rubber component, at least two of the hard supporting surfaces are arranged at intervals.

3. The brush head according to claim 2, characterized in that: The first supporting portion exposed outside the soft rubber component forms a hard supporting surface; Wherein, the hard support surface includes a first hard support area and a second hard support area connected to the first hard support area, and the first hard support area and the second hard support area are axially symmetrically arranged with the central axis of the brush head as the axis of symmetry.

4. The brush head according to claim 2, characterized in that: The first supporting portion exposed outside the soft rubber component forms at least two hard supporting surfaces arranged 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.

5. The brush head according to claim 4, characterized in that: At least two rigid support surfaces disposed at intervals are disposed axially symmetrically with the central axis as a symmetry axis.

6. The brush head according to claim 2, characterized in that: The first supporting portion exposed outside the soft rubber component forms at least one hard supporting surface; Wherein, the central axis of the brush head passes through the hard support surface, and the hard support surface is located on a side of the second connection end away from the first connection end.

7. The brush head according to claim 2, characterized in that: The first supporting portion exposed from the soft rubber component forms at least two hard supporting surfaces; Wherein, the central axis of the brush head passes through the hard support surface, and at least two of the hard support surfaces are respectively arranged at intervals along the extension direction of the central axis.

8. The brush head according to claim 2, characterized in that: The hard support surfaces are all planes; or, the hard support surfaces are all curved surfaces; or, at least one of the hard support surfaces is a plane; or, at least one of the hard support surfaces is a curved surface.

9. The brush head according to claim 2, characterized in that: The peripheral side of the hard supporting surface is chamfered.

10. The brush head according to claim 2, characterized in that: The soft rubber component covering a partial area of ​​the second connecting end forms a soft wrapping surface; Wherein, the contact area where the soft wrapping surface and the hard supporting surface meet is smoothly transitioned, or the contact area where the soft wrapping surface and the hard supporting surface meet is a plane.

11. The brush head according to claim 2, characterized in that: The soft rubber component covering a partial area of ​​the second connecting end forms a soft wrapping surface; Wherein, the first area of ​​the soft wrapping surface is greater than the second area of ​​the hard supporting surface.

12. The brush head according to claim 2, characterized in that: The soft rubber component covering a partial area of ​​the second connecting end forms a soft wrapping surface; The maximum height of the hard supporting surface relative to the preset reference surface is smaller than the maximum height of the soft wrapping surface relative to the preset reference surface.

13. The brush head according to any one of claims 1 to 12, characterized in that: The hardness of the soft rubber part is 30°-70°.

14. The brush head according to any one of claims 1 to 12, characterized in that: The soft plastic component also covers at least a partial area of ​​the first connecting end.

15. The brush head according to any one of claims 1 to 12, characterized in that: The brush rod assembly also includes a connector, which is arranged at the first connection end, and the brush head is detachably connected to the driving assembly of the electric toothbrush via the connector.

16. An electric toothbrush, characterized in that: include: A brush head as described in any one of claims 1 to 15 and a host provided with a driving assembly.

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