Electric toothbrush head and electric toothbrush

Abstract

The utility model discloses an electric toothbrush head and an electric toothbrush. The electric toothbrush head comprises a rod body, a brush body connected with the rod body, a first brush wire and a second brush wire. The brush body comprises a brush plate. The brush plate comprises a first bristle planting part, a second bristle planting part and a connecting part. In the width direction of the rod body, the first bristle planting parts and the second bristle planting parts are arranged at intervals. The connecting part is arranged in a gap between the adjacent first hair planting part and second hair planting part, and is used for connecting the adjacent first hair planting part and second hair planting part. And under the condition that the brush plate is stressed, the connecting part deforms to drive the second bristle planting part to deform. The first brush wires are arranged on the first bristle planting part. The second brush wires are arranged on the second bristle planting part. The connecting part can drive the second hair planting part to deform when being stressed and deformed, and the second hair planting part can be close to or far away from the first hair planting part, so that gingiva is avoided, and the risk of gingiva injury is reduced. The deformed second bristle planting part enables the second brush wires to be more tightly attached to the to-be-cleaned face of the to-be-cleaned part, and the cleaning effect of the electric toothbrush is improved.

Description

Technical Field

[0001] The present application relates to the field of cleaning technology, and more specifically, to an electric toothbrush head and an electric toothbrush. Background Art

[0002] As people's living standards improve, they pay more and more attention to oral health. Compared with traditional manual toothbrushes, electric toothbrushes have significant advantages in cleaning efficiency, ease of use and comfort, so they are becoming more and more popular among the public, and the functions and appearance designs of electric toothbrushes are constantly enriched.

[0003] An electric toothbrush is an electronic device that can clean the oral cavity. When the electric toothbrush is working, the driving element in the brush handle drives the electric toothbrush head to vibrate to clean the surface and gaps of the teeth. When the current electric toothbrush cleans the side of the teeth, the brush body is prone to collision with the gums and other parts, causing damage to the gums and poor cleaning effect on the teeth. Utility Model Content

[0004] Embodiments of the present application provide an electric toothbrush head and an electric toothbrush.

[0005] The electric toothbrush head of the embodiment of the present application includes a rod body, a brush body connected to the rod body, a first brush filament and a second brush filament. The brush body includes a brush plate. The brush plate includes a first hair-planting portion, a second hair-planting portion and a connecting portion. In the width direction of the rod body, the first hair-planting portion and the second hair-planting portion are arranged at intervals. The connecting portion is arranged in the interval between the adjacent first hair-planting portion and the second hair-planting portion, and is used to connect the adjacent first hair-planting portion and the second hair-planting portion. When the brush plate is subjected to force, the connecting portion is deformed, driving the deformation of the second hair-planting portion. The first brush filament is arranged in the first hair-planting portion. The second brush filament is arranged in the second hair-planting portion. When the connecting part of the electric toothbrush head is deformed under force, the second hair-planted part will drive the deformation, and the second hair-planted part will approach or move away from the first hair-planted part, so that the interval between the first hair-planted part and the second hair-planted part will change, thereby avoiding the gums and reducing the risk of gum damage; at the same time, the deformed second hair-planted part allows the second brush filaments arranged thereon to fit more closely to the various surfaces to be cleaned of the part to be cleaned (such as teeth), thereby improving the cleaning effect of the electric toothbrush.

[0006] In some embodiments, there are two second hair-planting parts, and the two second hair-planting parts are respectively arranged on both sides of the first hair-planting part in the width direction of the brush plate. The two second hair-planting parts are respectively arranged on both sides of the first hair-planting part in the width direction Y of the brush plate, so that the second hair-planting parts can better wrap and clean the surface to be cleaned (such as the side of the teeth) of the part to be cleaned (such as the teeth).

[0007] In some embodiments, the thickness of the connecting portion is less than the thickness of the second bristle-planting portion. The thicker second bristle-planting portion provides better support for the second bristle filaments, and the thinner connecting portion is more likely to deform under stress, so as to drive the adjacent second bristle-planting portions to move closer to the first bristle-planting portion or away from each other, so as to move the second bristle filaments to different positions, thereby improving the cleaning effect of the electric toothbrush head.

[0008] In some embodiments, the thickness of the connecting portion is less than the thickness of the first bristle-planting portion. The thicker first bristle-planting portion provides better support for the first bristle filaments, and the thinner connecting portion is more likely to deform under stress, so as to drive the adjacent second bristle-planting portion to move closer to the first bristle-planting portion or away from each other, so as to move the second bristle filaments to different positions, thereby improving the cleaning effect of the electric toothbrush head.

[0009] In some embodiments, along the thickness direction of the brush body, the brush plate includes a first surface and a second surface opposite to each other, and the brush plate is a curved structure protruding from the first surface to the second surface. The first brush filaments and the second brush filaments both protrude and extend from the first surface toward the side away from the second surface. The brush plate is a curved structure protruding from the first surface to the second surface, which conforms to the natural curve of the part to be cleaned (such as teeth), can avoid gums, and reduce the risk of gum damage; at the same time, the curved structure of the brush plate allows the first brush filaments arranged at intervals thereon to fit more closely to the various surfaces to be cleaned of the part to be cleaned (such as teeth), thereby improving the cleaning effect of the electric toothbrush.

[0010] In some embodiments, in the width direction of the brush body, the free end faces of the first brush filaments and the free end faces of the second brush filaments form a discontinuous arc surface. The height of the arc surface increases first and then decreases. The height of the arc surface increases first and then decreases, that is, the hair bundles located at the center of the first brush filament are longer, and the hair bundles of the first brush filaments and the hair bundles of the second brush filaments located at the edge of the first hair-implanted portion are shorter. The longer hair bundles located at the center of the first brush filament will first contact the portion to be cleaned and deform and bend, and then the shorter hair bundles located at the edge of the first hair-implanted portion and the shorter hair bundles of the second brush filament will contact the portion to be cleaned. The hair bundles at the center of the first hair-implanted portion are longer than the hair bundles at the edge, and the hair bundles at the center of the first hair-implanted portion can more easily extend into the pits and fissures deep in the oral cavity and clean the pits and fissures, which can improve the cleaning effect of the pits and fissures. The hair bundles of the second brush filaments are shorter, which can further avoid the gums when the second hair-implanted portion is deformed by force.

[0011] In certain embodiments, each group of the first brush filaments includes a plurality of mutually spaced bristle bundles, and the bristle bundles in the first brush filaments and the second brush filaments are both inclined toward the mid-width plane of the brush plate, and the inclination angle of the bristle bundles in the second brush filaments toward the mid-width plane of the brush plate is greater than the inclination angle of any of the bristle bundles in the first brush filaments toward the mid-width plane of the brush plate. The bristle bundles of the first brush filaments and the bristle bundles of the second brush filaments are both inclined toward the mid-width plane of the brush plate, so that the first brush filaments and the second brush filaments are inwardly retracted as a whole. The first brush filaments and the second brush filaments can be used to centrally clean the central area of ​​the portion to be cleaned, and the cleaning effect of the central area of ​​the portion to be cleaned is better. The inclination angle of the bristle bundles in the second brush filaments toward the mid-width plane of the brush plate is greater than the inclination angle of the bristle bundles in the first brush filaments toward the mid-width plane of the brush plate, so that the second brush filaments can avoid the gums close to the edge area of ​​the portion to be cleaned to avoid damage.

[0012] In some embodiments, the brush plate includes a first surface and a second surface facing each other, each group of the first brush filaments includes a plurality of mutually spaced hair bundles, and the extension direction of the second brush filaments intersects with the extension direction of any hair bundle of the first brush filaments. The extension direction of the second brush filaments intersects with the extension direction of any hair bundle of the first brush filaments, so that the hair bundles of the second brush filaments and any hair bundles of the first brush filaments can fit the same surface to be cleaned of the part to be cleaned from different angles, or fit different surfaces to be cleaned of the part to be cleaned, thereby further improving the cleaning effect.

[0013] In some embodiments, in the same group of the first brush filaments, the extension directions of the plurality of bristle bundles are the same, and the extension directions of at least two groups of the first brush filaments intersect. The extension directions of the plurality of bristle bundles in the same group of the first brush filaments are the same, so that the bristle bundles of the same group of the first brush filaments do not interfere with each other. The extension directions of at least two groups of the first brush filaments intersect, that is, the bristle bundles of at least two different groups of the first brush filaments have different inclination angles, so that the bristle bundles of at least two different groups of the first brush filaments can fit the same to-be-cleaned surface of the part to be cleaned (e.g., teeth) from different angles, or fit different to-be-cleaned surfaces of the part to be cleaned, further improving the cleaning effect.

[0014] In some embodiments, in the same group of the first brush filaments, the extension directions of the plurality of bristle bundles are different, and one bristle bundle in one group of the first brush filaments intersects with at least one bristle bundle in any other group of the first brush filaments. The bristle bundles with different extension directions in the same group of the first brush filaments can fit the same surface to be cleaned of the part to be cleaned (such as teeth) from different angles, thereby achieving multi-angle cleaning of the same surface to be cleaned of the part to be cleaned, and achieving a better cleaning effect; at the same time, one bristle bundle in the same group of the first brush filaments intersects with at least one bristle bundle in any other group of the first brush filaments, so that the bristle bundles of the first brush filaments of different groups can fit the same surface to be cleaned of the part to be cleaned from different angles, or fit different surfaces to be cleaned of the part to be cleaned, thereby further improving the cleaning effect.

[0015] In some embodiments, in the same group of the first brush filaments, the extension directions of the plurality of bristle bundles are different, and the extension directions of at least two of the bristle bundles intersect. The bristle bundles with different extension directions in the same group of the first brush filaments can fit the same surface to be cleaned of the part to be cleaned (such as teeth) from different angles, thereby achieving multi-angle cleaning of the same surface to be cleaned of the part to be cleaned, and achieving a better cleaning effect.

[0016] In some embodiments, the number of the hair bundles in the first brush filament is greater than the number of the hair bundles in the second brush filament; the number of bristles in each hair bundle in the first brush filament is less than the number of bristles in the hair bundle in the second brush filament. The number of hair bundles in the first brush filament is greater than the number of hair bundles in the second brush filament, so that the first brush filament covers a larger area of ​​the part to be cleaned, thereby improving the cleaning power. The number of bristles in each hair bundle of the first brush filament is less than the number of bristles in the hair bundle of the second brush filament, which can ensure the cleaning effect of the second brush filament when the number of hair bundles in the second brush filament is less than the number of hair bundles in the first brush filament.

[0017] In some embodiments, the shape of the cross section of the hair bundle in the first brush filament is different from the shape of the cross section of the hair bundle in the second brush filament. The shape of the cross section of the hair bundle in the second brush filament is different from the shape of the cross section of the hair bundle in the first brush filament, so that the electric toothbrush head can better adapt to different shapes and sizes of the part to be cleaned (such as teeth) and the area where it is located, and provide different cleaning effects.

[0018] In certain embodiments, the number of bristles of the hair bundles in the first brush filament in the length direction of the brush plate is the same as the number of bristles of the hair bundles in the width direction of the brush plate, and the number of bristles of the hair bundles in the second brush filament in the length direction of the brush plate is greater than the number of bristles of the hair bundles in the width direction of the brush plate. The number of bristles of the hair bundles in the first brush filament in the length direction of the brush plate is the same as the number of bristles of the hair bundles in the width direction, so that the hair bundles in the first brush filament have the same contact area with the portion to be cleaned in the length direction and the width direction of the brush plate. The number of bristles of the hair bundles in the second brush filament in the length direction of the brush plate is greater than the number of bristles in the width direction of the brush plate, so that the contact range between the hair bundles in the second brush filament and the portion to be cleaned in the length direction of the brush plate is greater than the contact range between the hair bundles in the second brush filament and the portion to be cleaned in the width direction, so that the hair bundles in the second brush filament can more fully rub against the portion to be cleaned to polish the surface of the portion to be cleaned.

[0019] In some embodiments, the free end faces of the hair bundles in the first brush filaments are at the same distance from the first surface. The free end faces of the hair bundles in the first brush filaments are at the same distance from the first surface, which can make the hair bundles in the first brush filaments have the same brushing feel, improve user experience, and also make the hair bundles in the first brush filaments wear synchronously during use, which helps to maintain the service life of the electric toothbrush head.

[0020] In some embodiments, in the first brush filament, the distance between the free end surface of the hair bundle located at the edge of the first hair-implanted portion and the first surface is smaller than the distance between the free end surface of the hair bundle located at the center of the first hair-implanted portion and the first surface. That is, the hair bundle at the center of the first hair-implanted portion is longer than the hair bundle at the edge, and the hair bundle at the center of the first hair-implanted portion is easier to reach the pits and fissures deep in the oral cavity and clean the pits and fissures, which can improve the cleaning effect of the pits and fissures.

[0021] In some embodiments, the distance between the free end face of the hair bundle in the second brush wire and the first surface is smaller than the distance between the free end face of the hair bundle in the first brush wire and the first surface. That is, the hair bundle in the hair bundle of the second brush wire is shorter than the hair bundle in the first brush wire. When the electric toothbrush head cleans the part to be cleaned (such as teeth), the hair bundle in the first brush wire serves as the main cleaning force to clean the middle area of ​​the part to be cleaned, and the hair bundle in the second brush wire can serve as a cleaning auxiliary to clean the edge area of ​​the part to be cleaned, and can avoid the gums close to the edge area of ​​the part to be cleaned.

[0022] In some embodiments, the free end surface of the hair bundle in the first brush filament is an inclined surface, and the inclination angle of the free end surface of the higher hair bundle in the first brush filament is greater than the inclination angle of the free end surface of the lower hair bundle. The inclination angle of the free end surface of the higher hair bundle in the first brush filament is greater than the inclination angle of the free end surface of the lower hair bundle, which can make it easier for the free end surface of the higher hair bundle to extend into the pits and fissures deep in the oral cavity and clean the pits and fissures, thereby improving the cleaning effect of the pits and fissures.

[0023] In some embodiments, the length of the first hair implantation portion is greater than the length of the second hair implantation portion. The length of the first hair implantation portion is greater than the length of the second hair implantation portion, so that the first hair implantation portion can be deeper into the oral cavity, the cleaning area is larger, and it is beneficial to clean the deep part of the oral cavity. It can also allow the first hair implantation portion to be provided with more first brush filaments in the length direction to improve the cleaning ability. The length of the second hair implantation portion is less than the length of the first hair implantation portion, so that the second hair implantation portion can avoid the gums when cleaning the oral cavity, and avoid bumping against the cleaning portion (such as teeth).

[0024] In some embodiments, the width of the first implanted hair portion is greater than the width of the second implanted hair portion. The width of the first implanted hair portion is greater than the width of the second implanted hair portion, which can allow the first implanted hair portion to have a larger cleaning range in the width direction, improve the cleaning efficiency of the first implanted hair portion, and also allow the first implanted hair portion to have more first bristles in the width direction to improve the cleaning ability. The width of the second implanted hair portion is less than the width of the first implanted hair portion, which can allow the second implanted hair portion to avoid the gums when cleaning the oral cavity, avoiding bumps on the cleaning portion (such as teeth).

[0025] In some embodiments, the first surface of the first hair-planting portion is provided with a first hair-planting hole, and the first surface of the second hair-planting portion is provided with a second hair-planting hole. The first brush filament has copper hair-planting in the first hair-planting hole, and the second brush filament has no copper hair-planting in the second hair-planting hole. That is, the first brush filament is pressed tightly in the first hair-planting hole by the copper sheet, and the second brush filament passes through the second hair-planting hole and is glued to the second surface of the brush plate, so that the fixed end of the first brush filament is more firmly connected to the brush plate than the fixed end of the second brush filament. When subjected to reverse pressure from the portion to be cleaned, the second brush filament is more easily deformed, and even if the second brush filament touches the gums close to the edge area of ​​the portion to be cleaned, it will not over-stimulate the gums and cause gum damage.

[0026] In some embodiments, the electric toothbrush head further includes a deformable member, the deformable member includes a buffer portion and a third brush filament, the brush plate includes a first surface and a second surface opposite to each other, and the brush plate further includes a peripheral side surface connecting the first surface and the second surface. The buffer portion covers at least a portion of the second surface, at least a portion of the peripheral side surface and at least a portion of the first surface. The third brush filament protrudes and extends from the buffer portion, and passes through the second surface of the brush plate to the first surface of the brush plate. The third brush filament is spaced from the first brush filament. The buffer portion covering at least a portion of the brush plate can provide a buffering effect when the electric toothbrush head cleans the oral cavity to avoid bumping against the gums; the buffer portion covering at least a portion of the rod body can, on the one hand, prevent the electric toothbrush head from vibrating and bumping against the portion to be cleaned (such as teeth or gums) when cleaning the portion to be cleaned in the oral cavity, causing oral damage, and on the other hand, prevent the electric toothbrush head from changing the cleaning direction or cleaning area in the oral cavity, or when the electric toothbrush head is taken out of the oral cavity or inserted into the oral cavity, the rod body bumps against the portion to be cleaned and damages the oral cavity. The third brush wire is spaced apart from the first brush wire, so that the third brush wire and the first brush wire can clean the part to be cleaned together, thereby improving the cleaning effect of the electric toothbrush on the part to be cleaned.

[0027] In some embodiments, the first brush wire and the third brush wire are made of different materials. The first brush wire and the third brush wire are made of different materials, which can enable the electric toothbrush head to have different cleaning methods (cleaning and polishing) for the cleaning part, thereby achieving better care effects and better meeting the current user's diversified needs for oral care effects.

[0028] In some embodiments, the hardness of the first brush wire is greater than that of the third brush wire, and under the same force, the deformation of the third brush wire is greater than that of the first brush wire. The deformation of the third brush wire is greater than that of the first brush wire, so that the first brush wire can be used to clean hard parts to be cleaned (such as teeth), and the third brush wire can clean both hard parts to be cleaned and flexible parts to be cleaned (such as gums or oral cavity walls, etc.), avoiding damage to the flexible parts to be cleaned.

[0029] In some embodiments, the friction between the first brush wire and the part to be cleaned is less than the friction between the third brush wire and the part to be cleaned. The friction between the first brush wire and the part to be cleaned is less than the friction between the third brush wire and the part to be cleaned, so that the first brush wire will not excessively scratch the surface to be cleaned of the part to be cleaned to avoid damaging the surface to be cleaned, and the third brush wire can fully rub against the surface to be cleaned of the part to be cleaned to polish the surface to be cleaned of the part to be cleaned to care for the part to be cleaned.

[0030] In some embodiments, the third brush filaments include a plurality of mutually spaced bristle bundles. At least two bristle bundles of the third brush filaments form an installation area, and a plurality of groups of the first brush filaments are respectively arranged in different installation areas. The bristle bundles of the first brush filaments clean the part to be cleaned (such as teeth), and the bristle bundles of the third brush filaments polish the part to be cleaned. The bristle bundles arranged at intervals can make the brush plate have different cleaning effects. At the same time, the first brush filaments are respectively arranged in different installation areas formed by the third brush filaments, so that the first brush filaments and the third brush filaments can be intertwined with each other, forming a mutually integrated state in which you have me and I have you, and the cleaning and polishing of the part to be cleaned can be intertwined.

[0031] In some embodiments, the buffer portion includes a first surface and a second surface facing each other, the first surface and the first surface are located on the same side of the brush body, and the buffer portion is a curved structure protruding from the first surface to the second surface. The buffer portion can buffer the impact of the brush body on various parts of the oral cavity, and the curved buffer portion can form an escape space to avoid the part to be cleaned (such as gums), thereby reducing the risk of gum damage.

[0032] In some embodiments, in the width direction of the brush body, the thickness of the buffer portion increases first and then decreases. The thickness of the buffer portion increases first and then decreases, so that the buffer portion can form a curved structure protruding from the first surface to the second surface, so that the buffer portion can not only buffer the impact of the brush body on various parts of the oral cavity, but also form an avoidance space to avoid the gums and reduce the risk of gum damage.

[0033] In some embodiments, the deformable member is a rubber-coated member formed integrally with the third brush filament and the buffer portion. The strength of the joint between the integrally formed buffer portion and the third brush filament is relatively high, and the third brush filament is not easy to fall off the buffer portion. And there will be no connection gap between the integrally formed buffer portion and the third brush filament, so in the process of using the electric toothbrush head to clean the oral cavity, liquid or foam will not be deposited on the deformable member, and the electric toothbrush head can remain clean. At the same time, the third brush filament is a part of the rubber-coated member, which is different from the first brush filament (at least the material is different). Different first brush filaments and third brush filaments can clean and polish the part to be cleaned (such as teeth), respectively, that is, the first brush filament and the third brush filament can care for the part to be cleaned in different ways, and the electric toothbrush has a better care effect on the part to be cleaned.

[0034] The electric toothbrush of the embodiment of the present application includes the electric toothbrush head and the brush handle of any one embodiment. The electric toothbrush head is installed on the brush handle. In the electric toothbrush head, when the connecting part is deformed by force, the second hair-planting part will be deformed, and the second hair-planting part will be close to or away from the first hair-planting part, so that the spacing between the first hair-planting part and the second hair-planting part will change, thereby avoiding the gums and reducing the risk of gum damage; at the same time, the deformed second hair-planting part allows the second brush filaments arranged thereon to fit more closely to the surfaces to be cleaned of the part to be cleaned (such as teeth), thereby improving the cleaning effect of the electric toothbrush.

[0035] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0037] Figure 1 is a three-dimensional schematic diagram of an electric toothbrush head according to certain embodiments of the present application;

[0038] Figure 2 yes Figure 1 An exploded schematic diagram of an electric toothbrush head is shown;

[0039] Figure 3 is an exploded schematic diagram of a partial structure of an electric toothbrush head according to some embodiments of the present application;

[0040] Figure 4 is a schematic plan view of an electric toothbrush head according to certain embodiments of the present application;

[0041] Figure 5 is a schematic cross-sectional view of a partial structure of an electric toothbrush head according to some embodiments of the present application;

[0042] Figure 6 is a schematic plan view of a partial structure of an electric toothbrush head according to some embodiments of the present application;

[0043] Figure 7 It is a three-dimensional schematic diagram of an electric toothbrush according to certain embodiments of the present application.

[0044] Description of main component symbols:

[0045] 1000, electric toothbrush; 100, electric toothbrush head; 300, brush handle;

[0046] 10. Brush body; 30. Rod body;

[0047] 11. brush plate; 101. first surface; 1011. mounting area; 103. second surface; 105. peripheral side surface; 111. first hair implantation portion; 1111. first hair implantation hole; 113. second hair implantation portion; 1131. second hair implantation hole; 115. connection portion; 117. through hole;

[0048] 13, first brush filament; 131, hair bundle; 1311, first group; 1312, second group; 1313, third group; 1314, fourth group; 1310, free end surface;

[0049] 15. second brush filament; 151. hair bundle; 1511. free end surface;

[0050] 17, deformation member; 171, buffer portion; 1711, first surface; 1713, second surface; 173, third brush filament; 1730, hair bundle; 1731, first bundle; 1732, second bundle; 1733, third bundle; 1734, fourth bundle; 1735, fifth bundle;

[0051] D, width mid-plane; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0052] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present application, and cannot be understood as limiting the embodiments of the present application.

[0053] In the description of the present application, it should be understood that the terms "thickness", "upper", "top", "bottom", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and 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 a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0054] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. In an example, it can be a fixed connection, or a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection, or they can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements.

[0055] See also Figures 1 to 3 The electric toothbrush head 100 of the embodiment of the present application includes a rod body 30, a brush body 10 connected to the rod body 30, a first brush filament 13 and a second brush filament 15. The brush body 10 includes a brush plate 11. The brush plate 11 includes a first hair-planting portion 111, a second hair-planting portion 113 and a connecting portion 115. In the width direction Y of the rod body 30, the first hair-planting portion 111 and the second hair-planting portion 113 are arranged at intervals. The connecting portion 115 is arranged in the interval between the adjacent first hair-planting portion 111 and the second hair-planting portion 113, and is used to connect the adjacent first hair-planting portion 111 and the second hair-planting portion 113. When the brush plate 11 is subjected to force, the connecting portion 115 is deformed, driving the second hair-planting portion 113 to deform. The first brush filament 13 is arranged in the first hair-planting portion 111. The second brush filament 15 is arranged in the second hair-planting portion 113.

[0056] The first direction of the brush body 10 is the length direction X, the second direction of the brush body 10 is the width direction Y, and the third direction of the brush body 10 is the thickness direction Z.

[0057] Specifically, the electric toothbrush head 100 includes a brush body 10 and a rod body 30 connected to each other. The rod body 30 is generally a cylindrical structure, so that the rod body 30 can be easily inserted into the oral cavity so that the first brush filaments 13 on the brush body 10 can reach various parts of the oral cavity that need to be cleaned. The cross-sectional shape of the rod body 30 includes but is not limited to a perfect circle, an ellipse or a polygon. The rod body 30 can move the electric toothbrush 1000 ( Figure 7 The vibration of the driving member (not shown) is transmitted to the brush body 10, and the brush body 10 transmits the vibration to the first brush wire 13 and the second brush wire 15. The first brush wire 13 and the second brush wire 15 can clean the parts to be cleaned (parts to be cleaned) in the oral cavity during the vibration process. The parts to be cleaned include but are not limited to teeth, tooth gaps, tongue, gums and the inner wall of the oral cavity.

[0058] The rod body 30 is connected to the brush body 10. In some embodiments, the brush body 10 and the rod body 30 are an integrated structure, that is, the brush body 10 and the rod body 30 are an integral structure, thereby improving the bonding strength between the brush body 10 and the rod body 30, preventing the brush body 10 and the rod body 30 from separating during the operation of the electric toothbrush head 100, thereby ensuring the stability and reliability of the operation of the electric toothbrush head 100. In other embodiments, the brush body 10 and the rod body 30 are split structures, that is, the brush body 10 and the rod body 30 are two different structures. The brush body 10 and the rod body 30 can be combined together by a non-detachable connection method, and the non-detachable connection method includes but is not limited to bonding or welding. In some embodiments, the brush body 10 can be made of a hard material, such as plastics such as PP, ABS or PBT. The material of the brush body 10 and the rod body 30 can be the same, for example, both are PP plastic; or, the material of the brush body 10 and the rod body 30 can be different, for example, the material of the brush body 10 is PP plastic and the material of the rod body 30 is ABS plastic.

[0059] The brush plate 11 is a structure on the brush body 10 that can connect with the first brush filaments 13 and the second brush filaments 15 and support and connect the first brush filaments 13 and the second brush filaments 15. In some embodiments, the brush plate 11 is an integral structure, and at least one recess and / or gap is provided on the brush plate 11, so that the brush plate 11 can be deformed when subjected to force. In other embodiments, the brush plate 11 is an integral structure formed by connecting multiple parts together, and gaps are provided between different parts. When the brush plate 11 is subjected to force, the spacing between each part will change under the action of external force, so that the brush plate 11 can be deformed, such as Figure 2 In the present application, the brush plate 11 is an integrated structure formed by connecting the first hair-planting portion 111, the second hair-planting portion 113 and the connecting portion 115.

[0060] The first hair implanting portion 111 is a partial structure of the brush plate 11 for mounting the first brush filament 13. The second hair implanting portion 113 is a partial structure of the brush plate 11 for mounting the second brush filament 15. The number of the first hair implanting portion 111 or the second hair implanting portion 113 can be one or more, and is not limited here. The first hair implanting portion 111 and the second hair implanting portion 113 are both curved structures protruding from the first surface 101 to the second surface 103. The degree of curvature of the first hair implanting portion 111 and the second hair implanting portion 113 can be the same or different. The first surface 101 of the first hair-planting portion 111 is a part of the first surface 101 of the brush plate 11, the second surface 103 of the first hair-planting portion 111 is a part of the second surface 103 of the brush plate 11, the first surface 101 of the second hair-planting portion 113 is a part of the first surface 101 of the brush plate 11, the second surface 103 of the second hair-planting portion 113 is a part of the second surface 103 of the brush plate 11, the first surface 101 of the first hair-planting portion 111 and the first surface 101 of the second hair-planting portion 113 together form the first surface 101 of the brush plate 11, and the second surface 103 of the first hair-planting portion 111 and the second surface 103 of the second hair-planting portion 113 together form the second surface 103 of the brush plate 11. The arrangement of the first hair-planting portion 111 and the second hair-planting portion 113 allows the electric toothbrush 1000( Figure 7 The vibration effects transmitted by the driving member to the first hair-implanted portion 111 and the second hair-implanted portion 113 are different, so that the first brush filaments 13 on the first hair-implanted portion 111 and the second brush filaments 15 on the second hair-implanted portion 113 have different vibration effects, thereby matching the vibration transmission requirements of different surfaces to be cleaned (such as teeth), thereby better cleaning the oral cavity.

[0061] The first brush filaments 13 and the second brush filaments 15 are structures for cleaning and / or caring for teeth, interdental spaces, gums, tongue or the inner wall of the oral cavity waiting to be cleaned. The materials of the first brush filaments 13 and the second brush filaments 15 include but are not limited to nylon, polyamide or silicone. The first brush filaments 13 are distributed on the first implanted hair part 111 at intervals, and the second brush filaments 15 are distributed on the second implanted hair part 113 at intervals.

[0062] The connecting portion 115 is a component that is arranged between two adjacent hair-planting portions and serves as a connection. In the present embodiment, the hair-planting portion includes a first hair-planting portion 111 and a second hair-planting portion 113. In some embodiments, the first hair-planting portion 111, the second hair-planting portion 113 and the connecting portion 115 are an integrally formed structure. A stable connection can be formed between the integrally formed first hair-planting portion 111, the second hair-planting portion 113 and the connecting portion 115. On the one hand, it can avoid the presence of gaps at the connection between the first hair-planting portion 111 and / or the second hair-planting portion 113 and the connecting portion 115, which leads to dirt deposition. On the other hand, it can also avoid the connection between the first hair-planting portion 111 and / or the second hair-planting portion 113 and the connecting portion 115 from separating when subjected to force, which leads to damage to the electric toothbrush head 100, thereby extending the service life of the electric toothbrush head 100.

[0063] In the electric toothbrush head 100 of the present application, when the connecting portion 115 is deformed by force, the second hair-implanted portion 113 will be deformed, and the second hair-implanted portion 113 will be close to or away from the first hair-implanted portion 111, so that the spacing between the first hair-implanted portion 111 and the second hair-implanted portion 113 will change, thereby avoiding the gums and reducing the risk of gum damage; at the same time, the deformed second hair-implanted portion 113 allows the second brush filaments 15 arranged thereon to fit more closely to the surfaces to be cleaned of the part to be cleaned (such as teeth), thereby improving the cleaning effect of the electric toothbrush.

[0064] See also Figure 2 and Figure 3 In some embodiments, there are two second hair-implanting portions 113 , and the two second hair-implanting portions 113 are respectively arranged on both sides of the first hair-implanting portion 111 in the width direction Y of the brush plate 11 .

[0065] Specifically, the two second hair-implanting portions 113 are respectively arranged on both sides of the first hair-implanting portion 111 in the width direction Y of the brush plate 11, so that the second hair-implanting portions 113 can better wrap and clean the surface to be cleaned (such as the side of the teeth) of the part to be cleaned (such as the teeth).

[0066] See also Figure 2 and Figure 3 In some embodiments, the thickness of the connecting portion 115 is less than the thickness of the second hair implantation portion 113 .

[0067] Specifically, the thicker second bristle portion 113 provides better support for the second bristle filaments 15, and the thinner connecting portion 115 is more likely to deform under force, thereby driving the adjacent second bristle portions 113 to move closer to or away from the first bristle portions 111, so that the second bristle filaments 15 move to different positions, thereby improving the cleaning effect of the electric toothbrush head 100.

[0068] See also Figure 2 and Figure 3In some embodiments, the thickness of the connecting portion 115 is less than the thickness of the first hair implantation portion 111 .

[0069] Specifically, the thicker first bristle portion 111 provides better support for the first bristle filaments 13; the thinner connecting portion 115 is more likely to deform under force, thereby driving the adjacent second bristle portion 113 to move closer to or away from the first bristle portion 111, so that the second bristle filaments 15 move to different positions, thereby improving the cleaning effect of the electric toothbrush head 100.

[0070] See also Figure 2 and Figure 3 In some embodiments, along the thickness direction Z of the brush body 10, the brush plate 11 includes a first surface 101 and a second surface 103 opposite to each other, and the brush plate 11 is a curved structure protruding from the first surface 101 to the second surface 103. The first brush filaments 13 and the second brush filaments 15 both protrude and extend from the first surface 101 toward the side away from the second surface 103.

[0071] Specifically, the first surface 101 of the brush plate 11 and the second surface 103 of the brush plate 11 are arranged opposite to each other in the thickness direction Z of the electric toothbrush head 100, that is, the thickness direction Z of the electric toothbrush head 100 can be the direction in which the first surface 101 of the brush plate 11 points to the second surface 103 of the brush plate 11, or the direction in which the second surface 103 of the brush plate 11 points to the first surface 101 of the brush plate 11, which is not limited here. In some embodiments, the brush plate 11 includes a first end and a second end in the length direction X, the first end of the brush plate 11 is a free end, and the second end of the brush plate 11 can be directly or indirectly connected to the rod body 30. In other embodiments, the rod body 30 is directly or indirectly connected to the second surface 103 of the brush plate 11, such as Figure 2 As shown. The brush plate 11 is a curved structure protruding from the first surface 101 to the second surface 103, that is, the intersection point of the width mid-plane D of the second hair-implanted portion 113 and the width mid-plane D of the first hair-implanted portion 111 is on the side where the first surface 101 is located. The shapes of the protruding curved surfaces of the first surface 101 and the second surface 103 may be the same or different. The curved surface shapes include but are not limited to circular arc surfaces, elliptical arc surfaces, or parabolas, etc., which are not limited in the present application. The shapes of the cross sections of the brush plate 11 cut by the YZ plane in the length direction X may be the same, different, or partially the same.

[0072] The brush plate 11 is a curved structure protruding from the first surface 101 to the second surface 103, which conforms to the natural curve of the part to be cleaned (such as teeth), can avoid the gums, and reduce the risk of gum damage; at the same time, the curved structure of the brush plate 11 allows the first brush wires 13 arranged thereon to fit more closely to the surfaces to be cleaned of the part to be cleaned (such as teeth), thereby improving the electric toothbrush 1000 ( Figure 7 cleaning effect.

[0073] See also Figure 2 and Figure 4 In some embodiments, in the width direction Y of the brush body 10, the free end surface 1310 of the first brush filament 13 and the free end surface 1511 of the second brush filament 15 form a discontinuous arc surface. The height of the arc surface increases first and then decreases.

[0074] Specifically, the hair bundle 131 of the first brush filament 13 and the hair bundle 151 of the second brush filament 15 each include two end faces, wherein the end face of the hair bundle 131 of the first brush filament 13 away from the first surface 101 is a free end face 1310, and the end face of the hair bundle 151 of the second brush filament 15 away from the first surface 101 is a free end face 1511. The height of the arc surface increases first and then decreases. When the electric toothbrush head 100 contacts the part to be cleaned, the hair bundle 131 of the first brush filament 13 located at the center is longer, and the hair bundle 131 of the first brush filament 13 located at the edge of the first hair implantation portion 111 and the hair bundle 151 of the second brush filament 15 are shorter. The longer hair bundle 131 of the first brush filament 13 located at the center will first contact the part to be cleaned and deform and bend, and then the shorter hair bundle 131 located at the edge of the first hair implantation portion 111 and the shorter hair bundle 151 of the second brush filament 15 will contact the part to be cleaned. The hair bundle 131 at the center of the first hair implanted portion 111 is longer than the hair bundle 131 at the edge. The hair bundle 131 at the center of the first hair implanted portion 111 can more easily reach into the pits and fissures deep in the oral cavity and clean the pits and fissures, which can improve the cleaning effect of the pits and fissures. The hair bundle 151 of the second brush filament 15 is shorter, which can further avoid the gums when the second hair implanted portion 113 is deformed by force.

[0075] See also Figure 2 and Figure 4 In some embodiments, each group of first brush filaments 13 includes a plurality of mutually spaced bristle bundles 131, and the bristle bundles 131 in the first brush filaments 13 and the bristle bundles 151 in the second brush filaments 15 are both inclined toward a width median plane of the brush plate 11, and an inclination angle of the bristle bundles 151 in the second brush filaments 15 toward a width median plane D of the brush plate 11 is greater than an inclination angle of any bristle bundle 131 in the first brush filaments 13 toward a width median plane D of the brush plate 11.

[0076] Specifically, the inclination angles of different hair bundles 131 in the first brush filaments 13 toward the plane D in the width of the brush plate 11 can be the same, partially the same, partially different, or completely different. The inclination angles of the hair bundles 151 in the second brush filaments 15 toward the plane D in the width of the brush plate 11 can be the same, partially the same, partially different, or completely different. In one embodiment of the present application, the inclination angles of any hair bundle 151 of the second brush filaments 15 toward the plane D in the width of the brush plate 11 are the same.

[0077] The hair bundles 131 of the first brush filaments 13 and the hair bundles 151 of the second brush filaments 15 are both inclined toward the width mid-plane D of the brush plate 11, so that the first brush filaments 13 and the second brush filaments 15 are inwardly retracted as a whole, and the first brush filaments 13 and the second brush filaments 15 can focus on cleaning the central area of ​​the part to be cleaned, and the cleaning effect of the central area of ​​the part to be cleaned is better. The inclination angle of the hair bundles 151 of the second brush filaments 15 toward the width mid-plane D of the brush plate 11 is greater than the inclination angle of the hair bundles 131 of the first brush filaments 13 toward the width mid-plane D of the brush plate 11, so that the second brush filaments 15 can avoid the gums close to the edge area of ​​the part to be cleaned to avoid damage.

[0078] See also Figure 2 and Figure 3 In some embodiments, the brush plate 11 includes a first surface 101 and a second surface 103 facing each other, each group of first brush filaments 13 includes a plurality of mutually spaced hair bundles 131, and an extension direction of the second brush filaments 15 intersects with an extension direction of any hair bundle 131 in the first brush filaments 13.

[0079] Specifically, the first brush filaments 13 include multiple groups, each group of the first brush filaments 13 includes multiple hair bundles 131, and the hair bundles 131 of each group of the first brush filaments 13 are spaced from each other and have a certain spacing. The extension direction of the second brush filaments 15 intersects with the extension direction of any hair bundle 131 in the first brush filaments 13, that is, the hair bundles 151 in the second brush filaments 15 and any hair bundles 131 in the first brush filaments 13 have different inclination angles, so that the hair bundles 151 in the second brush filaments 15 and any hair bundles 131 in the first brush filaments 13 can fit the same surface to be cleaned of the part to be cleaned from different angles, or fit different surfaces to be cleaned of the part to be cleaned, thereby further improving the cleaning effect.

[0080] See also Figure 2 and Figure 3 In some embodiments, in the same group of first brush filaments 13 , the extension directions of the plurality of bristle bundles 131 are the same, and the extension directions of at least two groups of first brush filaments 13 intersect.

[0081] Specifically, the number of bristle bundles 131 of each group of first brush filaments 13 may be the same as or different from the number of bristle bundles 131 of any other group of first brush filaments 13, and there is no limitation here. In one embodiment of the present application, the number of bristle bundles 131 of each group of first brush filaments 13 is three. The distribution positions of multiple bristle bundles 131 in the same group of first brush filaments 13 on the brush plate 11 are different, and the outer contour shape of each group of first brush filaments 13 in any cross section (XY plane) perpendicular to the thickness direction Z may also be different. For example, Figure 6As shown, the first brush filaments 13 include four groups, namely the first group 1311, the second group 1312, the third group 1313 and the fourth group 1314. The four groups of first brush filaments 13 each include three bristle bundles 131. The outer contours of the first group 1311 and the second group 1312 in any cross section (XY plane) perpendicular to the thickness direction Z are triangular, and the outer contours of the third group 1313 and the fourth group 1314 in any cross section (XY plane) perpendicular to the thickness direction Z are rectangular. In each group of first brush filaments 13, the spacings between the bristle bundles 131 of adjacent first brush filaments 13 may be the same, or different, or partially the same and partially different. The cross-sectional shape of the bristle bundles 131 of the first brush filament 13 cut by the XY plane may be circular, elliptical, triangular, quadrilateral or other polygonal, etc., which is not limited here. In the embodiment of the present application, the cross-sectional shape of the bristle bundles 131 of the first brush filament 13 is circular. In the same group of first brush filaments 13, the hair bundles 131 of the plurality of first brush filaments 13 extend in the same direction, that is, the plurality of hair bundles 131 of the same group of first brush filaments 13 have the same inclination angle in the thickness direction Z and are parallel to each other. The extending directions of at least two groups of first brush filaments 13 intersect, that is, the extending directions of at least two groups of first brush filaments 13 are different, and any hair bundle 131 of the two groups of first brush filaments 13 is parallel to any hair bundle 131 of the same group, and intersects with any hair bundle 131 of the other group on the side from the first surface 101 to the side away from the second surface 103.

[0082] See also Figure 2 and Figure 3 The extension directions of the multiple hair bundles 131 in the same group of first brush filaments 13 are the same, so that the hair bundles 131 in the same group of first brush filaments 13 do not interfere with each other. The extension directions of at least two groups of first brush filaments 13 intersect, that is, the hair bundles 131 of at least two different groups of first brush filaments 13 have different inclination angles, so that the hair bundles 131 of at least two different groups of first brush filaments 13 can fit the same surface to be cleaned of the part to be cleaned from different angles, or fit different surfaces to be cleaned of the part to be cleaned, thereby further improving the cleaning effect.

[0083] See also Figure 2 and Figure 3 In some embodiments, in the same group of first brush filaments 13, the extension directions of the plurality of bristle bundles 131 are different. One bristle bundle 131 in one group of first brush filaments 13 intersects with at least one bristle bundle 13 in any other group of first brush filaments 13.

[0084] Specifically, in the same group of first brush filaments 13, the extension directions of the plurality of hair bundles may be all different, or may be partially different and partially the same. Any hair bundle 131 of the same group of first brush filaments 13 may be parallel to any hair bundle 131 of any other group of first brush filaments 13, or may intersect from the first surface 101 to the side away from the second surface 103. In this embodiment, one hair bundle 131 of the same group of first brush filaments 13 intersects with at least one hair bundle 131 of any other group of first brush filaments 13. The bristle bundles 131 of the same group of first brush filaments 13 with different extension directions can fit the same surface to be cleaned (such as the side of the teeth) of the part to be cleaned (such as the teeth) from different angles, thereby achieving multi-angle cleaning of the same surface to be cleaned of the part to be cleaned, and the cleaning effect is better; at the same time, one bristle bundle 131 of the same group of first brush filaments 13 intersects with at least one bristle bundle 131 of the first brush filaments 13 of any other group, so that the bristle bundles 131 of different groups of first brush filaments 13 can fit the same surface to be cleaned of the part to be cleaned from different angles, or fit different surfaces to be cleaned of the part to be cleaned, thereby further improving the cleaning effect.

[0085] See also Figure 2 and Figure 3 In some embodiments, in the same group of first brush filaments 13 , the extension directions of the plurality of bristle bundles 131 are different, and the extension directions of at least two bristle bundles 131 intersect.

[0086] Specifically, in the same group of first brush filaments 13, the extension directions of the plurality of bristle bundles 131 may be all different, or may be partially different and partially the same. The extension directions of at least two bristle bundles 131 intersect. The bristle bundles 131 with different extension directions in the same group of first brush filaments 13 can fit the same surface to be cleaned of the part to be cleaned (e.g., teeth) from different angles, thereby achieving multi-angle cleaning of the same surface to be cleaned of the part to be cleaned, and achieving a better cleaning effect.

[0087] See also Figure 2 and Figure 3 In some embodiments, the number of bristles 131 of the first brush filament 13 is greater than the number of bristles 151 of the second brush filament 15. The number of bristles in each bristle 131 of the first brush filament 13 is less than the number of bristles in the bristle 151 of the second brush filament 15.

[0088] Specifically, in the present application, the number of bristle bundles 131 of the first brush filament 13 is 12, and the number of bristle bundles 151 of the second brush filament 15 is 2. The number of bristle bundles 131 of the first brush filament 13 is greater than the number of bristle bundles 151 of the second brush filament 15, so that the first brush filament 13 covers a larger area of ​​the part to be cleaned, thereby improving the cleaning power.

[0089] The number of bristles in each tuft 131 of the first brush filament 13 is smaller than the number of bristles in the tuft 151 of the second brush filament 15 , which can ensure the cleaning effect of the second brush filament 15 when the number of bristles 151 in the second brush filament 15 is smaller than the number of bristles 131 of the first brush filament 13 .

[0090] See also Figure 2 and Figure 3 In some embodiments, the cross-sectional shape of the hair bundle 131 of the first brush filament 13 is different from the cross-sectional shape of the hair bundle 151 in the second brush filament 15 .

[0091] Specifically, the cross-sectional shape of the hair bundle 151 in the second brush filament 15 and the cross-sectional shape of the hair bundle 131 in the first brush filament 13 can be circular, elliptical, triangular, quadrilateral or other polygonal shapes. In the present application, the cross-sectional shape of the hair bundle 131 in the first brush filament 13 is approximately circular, and the cross-sectional shape of the hair bundle 151 in the second brush filament 15 is approximately runway-shaped. The multiple hair bundles 131 in the first brush filament 13 are spaced apart from each other, which can avoid the multiple hair bundles 131 in the first brush filament 13 from interfering with each other. The multiple hair bundles 151 in the second brush filament 15 are spaced apart from each other, which can avoid the multiple hair bundles 151 in the second brush filament 15 from interfering with each other. Along the width direction Y of the electric toothbrush head 100, when the width of the first brush filament 13 is similar to the width of the second brush filament 15, the hair bundle 151 in the second brush filament 15 with a runway-shaped cross-section has a larger contact range with the part to be cleaned than the hair bundle 131 in the first brush filament 13 with a circular cross-section, and can more fully rub with the part to be cleaned to polish the surface of the part to be cleaned. The cross-sectional shape of the hair bundle 151 in the second brush filament 15 is different from the cross-sectional shape of the hair bundle 131 in the first brush filament 13, so that the electric toothbrush head 100 can better adapt to the different shapes and sizes of the parts to be cleaned (such as teeth) and the areas where they are located, providing different cleaning effects.

[0092] See also Figure 2 and Figure 3 In some embodiments, the number of bristles in the tufts 131 of the first brush filaments 13 in the length direction X of the brush plate 11 is the same as the number of bristles in the width direction Y of the brush plate 11. The number of bristles in the tufts 151 of the second brush filaments 15 in the length direction X of the brush plate 11 is greater than the number of bristles in the width direction Y of the brush plate 11.

[0093] Specifically, the number of bristles in the bundle 131 of the first brush filament 13 in the length direction X is the same as the number of bristles in the width direction Y, so that the bundle 131 of the first brush filament 13 has the same contact range with the part to be cleaned in the length direction X and the width direction Y. The number of bristles in the bundle 151 of the second brush filament 15 in the length direction X of the brush plate 11 is greater than the number of bristles in the width direction Y of the brush plate 11, so that the contact range between the bundle 151 of the second brush filament 15 in the length direction X and the part to be cleaned is greater than the contact range between the bundle 151 of the second brush filament 15 in the width direction Y and the part to be cleaned, so that the bundle 151 of the second brush filament 15 can more fully rub against the part to be cleaned to polish the surface of the part to be cleaned. The ratio of the contact range between the bristle bundle 151 in the second brush filament 15 and the part to be cleaned in the length direction X and the contact range between the bristle bundle 151 and the part to be cleaned in the width direction Y is different from the ratio of the contact area between the bristle bundle 131 of the first brush filament 13 and the part to be cleaned in the length direction X and the contact area between the bristle bundle 131 and the part to be cleaned in the width direction Y, so that the electric toothbrush head 100 can better adapt to the different shapes and sizes of the part to be cleaned (such as teeth) and the areas where they are located, and provide different cleaning effects.

[0094] See also Figure 2 and Figure 3 In some embodiments, the free end surface 1310 of the bristle bundle 131 of the first brush filament 13 is at the same distance from the first surface 101 .

[0095] Specifically, the hair bundle 131 of the first brush filament 13 includes two end faces, wherein the end face away from the first surface 101 is a free end face 1310. The free end faces 1310 of all hair bundles 131 in the first brush filament 13 are at the same distance from the first surface 101. When the hair bundles 131 of the first brush filament 13 have the same cross-sectional area, the hair bundles 131 of the first brush filament 13 have the same degree of freedom. When subjected to the same external force, the deformation capabilities of the free end faces 1310 of the hair bundles 131 of the first brush filament 13 converge, which can make the hair bundles 131 of the first brush filament 13 have the same brushing feel, improve user experience, and also make the hair bundles 131 of the first brush filament 13 wear synchronously during use, which helps to maintain the service life of the electric toothbrush head 100.

[0096] See also Figure 2 and Figure 3 In some embodiments, in the first brush filament 13, the distance between the free end surface 1310 of the hair bundle 131 located at the edge of the first hair implantation portion 111 and the first surface 101 is smaller than the distance between the free end surface 1310 of the hair bundle 131 located at the center of the first hair implantation portion 111 and the first surface 101, that is, the length of the hair bundle 131 located at the center of the first hair implantation portion 111 is greater than the length of the hair bundle 131 located at the edge of the first hair implantation portion 111.

[0097] Specifically, the hair bundles 131 located at the edge of the first hair-implanted portion 111 surround the hair bundles 131 located at the center of the first hair-implanted portion 111. When the electric toothbrush head 100 is in contact with the portion to be cleaned, the longer hair bundles 131 located at the center of the first hair-implanted portion 111 in the first brush filaments 13 will first contact the portion to be cleaned and deform and bend, and then the shorter hair bundles 131 located at the edge of the first hair-implanted portion 111 will contact the portion to be cleaned. The hair bundles 131 at the center of the first hair-implanted portion 111 are longer than the hair bundles 131 at the edge of the first hair-implanted portion 111, and the hair bundles 131 at the center of the first hair-implanted portion 111 are easier to extend into the pits and fissures deep in the oral cavity and clean the pits and fissures, which can improve the cleaning effect of the pits and fissures.

[0098] See also Figure 2 and Figure 3 In some embodiments, the distance between the free end surface 1310 of the hair bundle 151 in the second brush filament 15 and the first surface 101 is smaller than the distance between the free end surface 1310 of the hair bundle 131 of the first brush filament 13 and the first surface 101 .

[0099] Specifically, the distance between the free end surface 1511 of the bristle bundle 151 in the second brush filament 15 and the first surface 101 is smaller than the distance between the free end surface 1310 of the bristle bundle 131 of the first brush filament 13 and the first surface 101, that is, the length of any bristle bundle 151 in the second brush filament 15 is smaller than the length of any bristle bundle 131 in the first brush filament 13. When the electric toothbrush head 100 cleans the part to be cleaned (such as teeth), the bristle bundle 131 of the first brush filament 13 serves as the main cleaning force to clean the middle area of ​​the part to be cleaned, and the bristle bundle 151 in the second brush filament 15 can be used as a cleaning aid to clean the edge area of ​​the part to be cleaned, and can avoid the gums close to the edge area of ​​the part to be cleaned.

[0100] See also Figure 2 and Figure 3 In some embodiments, the free end surface 1310 of the hair bundle 131 of the first brush filament 13 is an inclined surface, and the inclination angle of the free end surface 1310 of the higher hair bundle 131 in the first brush filament 13 is greater than the inclination angle of the free end surface 1310 of the lower hair bundle 131.

[0101] Specifically, when the electric toothbrush head 100 vibrates, the inclination angle of the free end surface 1310 of the higher bristle bundle 131 in the first brush filament 13 is greater than the inclination angle of the free end surface 1310 of the lower bristle bundle 131, which can make the free end surface 1310 of the higher bristle bundle 131 more easily extend into the pits and fissures deep in the oral cavity and clean the pits and fissures, thereby improving the cleaning effect of the pits and fissures.

[0102] See also Figure 2 and Figure 3 In some embodiments, the length of the first hair implantation portion 111 is greater than the length of the second hair implantation portion 113 .

[0103] Specifically, the length of the first implanted hair portion 111 is greater than that of the second implanted hair portion 113, so that the first implanted hair portion 111 can penetrate deeper into the oral cavity, and the cleaning area can be larger, which is conducive to cleaning the deep part of the oral cavity. The first implanted hair portion 111 can also be provided with more first brush filaments 13 in the length direction X to improve the cleaning ability. The length of the second implanted hair portion 113 is less than that of the first implanted hair portion 111, so that the second implanted hair portion 113 can avoid the gums when cleaning the oral cavity, and avoid bumping against the part to be cleaned (such as teeth).

[0104] See also Figure 2 and Figure 3 In some embodiments, the width of the first hair implantation portion 111 is greater than the width of the second hair implantation portion 113 .

[0105] Specifically, the width of the first implanted hair portion 111 is greater than the width of the second implanted hair portion 113, so that the cleaning area of ​​the first implanted hair portion 111 in the width direction Y is larger, the cleaning efficiency of the first implanted hair portion 111 is improved, and more first brush filaments 13 can be arranged on the first implanted hair portion 111 in the width direction Y to improve the cleaning ability. The width of the second implanted hair portion 113 is less than the width of the first implanted hair portion 111, so that the second implanted hair portion 113 can avoid the gums when cleaning the oral cavity, avoiding collision with the part to be cleaned (such as teeth).

[0106] See also Figure 2 and Figure 3 In some embodiments, the first surface 101 of the first hair implantation portion 111 is provided with a first hair implantation hole 1111, and the first surface 101 of the second hair implantation portion 113 is provided with a second hair implantation hole 1131. The first brush filament 13 has copper hair implantation in the first hair implantation hole 1111, and the second brush filament 15 has no copper hair implantation in the second hair implantation hole.

[0107] Specifically, the first brush filament 13 is pressed tightly into the first bristle hole 1111 by the copper sheet, and the second brush filament 15 passes through the second bristle hole 1131 and is glued to the second surface 103 of the brush plate 11, so that the fixed end of the first brush filament 13 is more firmly connected to the brush plate 11 than the fixed end of the second brush filament 15. When subjected to reverse pressure from the part to be cleaned, the second brush filament 15 is more easily deformed. Even if the second brush filament 15 touches the gums close to the edge area of ​​the part to be cleaned, it will not over-stimulate the gums and cause gum damage.

[0108] See also Figure 2 and Figure 5In some embodiments, the electric toothbrush head 100 further includes a deformable member 17, the deformable member 17 includes a buffer portion 171 and a third brush filament 173, and the brush plate 11 further includes a peripheral side surface 105 connecting the first surface 101 and the second surface 103. The buffer portion 171 covers at least a portion of the second surface 103, at least a portion of the peripheral side surface 105, and at least a portion of the first surface 101. The third brush filament 173 protrudes and extends from the buffer portion 171, and passes through the second surface 103 of the brush plate 11 to the first surface 101 of the brush plate 11. The third brush filament 173 is spaced apart from the first brush filament 13.

[0109] Specifically, the deformable member 17 is a structure that can be deformed under force, and the deformable member 17 can be used to protect and support the brush plate 11. The material of the deformable member 17 can be a flexible material such as silicone, polyurethane, rubber or plastic, which is not limited here. The buffer portion 171 is a partial structure of the deformable member 17. The buffer portion 171 can be provided on at least a portion of the brush plate 11 and / or at least a portion of the rod body 30 in a rubber-coated manner. The buffer portion 171 can cover at least one of the first surface 101, the second surface 103 and the peripheral side surface 105 connecting the first surface 101 and the second surface 103 of the brush plate 11. In an embodiment of the present application, the buffer portion 171 can be formed on the brush plate 11 and / or the rod body 30 by hot-melting the material and then solidifying it again.

[0110] Specifically, the first brush filament 13 and the third brush filament 173 are structures that can be arranged on the electric toothbrush head 100 for cleaning and / or caring for the part to be cleaned. The third brush filament 173 may include a plurality of bristle bundles 1730. The material of the bristle bundle 1730 includes but is not limited to nylon, polyamide or silicone. The brush plate 11 is also provided with a through hole 117 that passes through the second surface 103 and the first surface 101. In some embodiments, the third brush filament 173 and the buffer portion 171 pre-form a deformable member 17 of an integral structure, and the deformable member 17 of the integral structure is installed on the brush plate 11 from the second surface 103 of the brush plate 11. Specifically, the third brush filament 173 passes through the through hole 117 from the second surface 103 of the brush plate 11 and extends from the first surface 101 of the brush plate 11, so that the buffer portion 171 is closely fitted with the second surface 103 of the brush plate 11, and the third brush filament 173 can protrude from the side where the first surface 101 of the brush plate 11 is located. In other embodiments, the soft glue or other materials in a fluid state flow from the first surface 101 of the brush plate 11 into the through hole 117 to form the third brush filaments 173 in the through hole 117, and the soft glue or other materials flowing out of the through hole 117 can be heated and solidified on the second surface 103 of the brush plate 11, the first surface 101 of the brush plate 11, and the peripheral side surface 105 of the brush plate 11 to form the buffer portion 171. In the case where the third brush filaments 173 and the buffer portion 171 are formed separately, the soft glue in a fluid state is first formed on the second surface 103 of the brush plate 11, the first surface 101 of the brush plate 11, and the peripheral side surface 105 of the brush plate 11 to form the buffer portion 171, and the soft glue in a fluid state then flows into the through hole 117 and reaches the surface of the buffer portion 171 corresponding to the through hole 117 to form the third brush filaments 173.

[0111] The buffer portion 171 covering at least a portion of the brush plate 11 can provide a buffering effect when the electric toothbrush head 100 cleans the oral cavity to avoid hitting the gums; the buffer portion 171 covering at least a portion of the rod body 30 can, on the one hand, prevent the rod body 30 from vibrating and hitting the part to be cleaned (such as teeth or gums) when the electric toothbrush head 100 cleans the part to be cleaned in the oral cavity, causing oral damage, and on the other hand, prevent the electric toothbrush head 100 from changing the cleaning direction or cleaning area in the oral cavity, or when the electric toothbrush head 100 is taken out of the oral cavity or inserted into the oral cavity, the rod body 30 hits the part to be cleaned and damages the oral cavity. The third brush filament 173 and the first brush filament 13 clean the part to be cleaned together, thereby improving the cleaning effect of the electric toothbrush head 100 on the part to be cleaned.

[0112] See also Figure 2 In some embodiments, the first brush filaments 13 and the third brush filaments 173 are made of different materials.

[0113] Specifically, the first brush 13 and the third brush 173 are made of different materials, so the functions that the first brush 13 and the third brush 173 can achieve are also different. In one example, the first brush 13 is made of hard nylon material, and the buffer 171 and the third brush 173 are made of soft silicone material. The different materials of the first brush 13 and the third brush 173 allow the electric toothbrush head 100 to have different cleaning methods (cleaning and polishing) for the cleaning part, thereby achieving better care effects, which is more in line with the current user's diversified needs for oral care effects.

[0114] Please continue reading Figure 2 In some embodiments, the hardness of the first brush filaments 13 is greater than that of the third brush filaments 173 . Under the same force, the deformation of the third brush filaments 173 is greater than that of the first brush filaments 13 .

[0115] Specifically, the hardness of the first brush filament 13 is greater than that of the third brush filament 173. Under the same force, the deformation of the third brush filament 173 is greater than that of the first brush filament 13. When the hardness of the first brush filament 13 is greater than that of the third brush filament 173, the first brush filament 13 can be used to clean hard parts to be cleaned (such as teeth), and the third brush filament 173 can clean both hard parts to be cleaned and flexible parts to be cleaned (such as gums or the inner wall of the oral cavity), avoiding damage to the flexible parts to be cleaned.

[0116] Please continue reading Figure 2 In some embodiments, the friction between the first brush filaments 13 and the part to be cleaned (eg, teeth) is smaller than the friction between the third brush filaments 173 and the part to be cleaned.

[0117] Specifically, the third brush 173 may have a pattern on its surface that increases friction, or may be made of a material with a larger friction coefficient, which is not limited here. Since the friction between the first brush 13 and the portion to be cleaned is relatively small, the first brush 13 will not excessively scratch the surface to be cleaned of the portion to be cleaned, thereby avoiding damage to the surface to be cleaned of the portion to be cleaned. The friction between the third brush 173 and the portion to be cleaned is relatively large, so the third brush 173 can fully rub against the surface to be cleaned of the portion to be cleaned to polish the surface to be cleaned of the portion to be cleaned to care for the portion to be cleaned.

[0118] See also Figure 2 and Figure 6 In some embodiments, the third brush filaments 173 include a plurality of mutually spaced bristle bundles. At least two bristle bundles of the third brush filaments 173 form an installation area 1011, and the plurality of groups of first brush filaments 13 are respectively disposed in different installation areas 1011.

[0119] Specifically, the hair bundles 1730 in the third brush filaments 173 are arranged at intervals, and the space enclosed by at least two hair bundles and the edge of the first surface 101 of the brush plate 11 can divide the first surface 101 of the brush plate 11 into a plurality of installation areas 1011. More specifically, in the embodiments of the present application, please refer to Figure 6 The first brush filaments 13 include a first group 1311, a second group 1312, a third group 1313 and a fourth group 1314 spaced apart from each other, and each group of first brush filaments 13 corresponds to an installation area 1011. The first group 1311 and the second group 1312 are arranged in sequence in the length direction X of the electric toothbrush head 100, and the third group 1313 and the fourth group 1314 are arranged in the width direction Y of the electric toothbrush head 100. The third brush filaments 173 include a first bundle 1731, a second bundle 1732, a third bundle 1733, a fourth bundle 1734 and a fifth bundle 1735 which are spaced apart from each other. The first bundle 1731 is disposed between the first group 1311 and the third group 1313 to separate the first group 1311 from the third group 1313, the second bundle 1732 is disposed between the first group 1311 and the fourth group 1314 to separate the first group 1311 from the fourth group 1314, the third bundle 1733 is disposed between the second group 1312 and the third group 1313 to separate the second group 1312 from the third group 1313, the fourth bundle 1734 is disposed between the second group 1312 and the fourth group 1314 to separate the second group 1312 from the fourth group 1314, and the fifth bundle 1735 is disposed between the third group 1313 and the fourth group 1314 to separate the third group 1313 from the fourth group 1314. No first brush filaments 13 are arranged between the third brush filaments 173 of the first bundle 1731 to the fifth bundle 1735, and the third brush filaments 173 of the first bundle 1731 to the fifth bundle 1735 are arranged between the first group 1311 and the second group 1312 to separate the first group 1311 from the second group 1312. In this embodiment, each third brush filament 173 can separate at least two adjacent groups of first brush filaments 13, and multiple bundles of third brush filaments 173 can be arranged in the middle of the brush plate 11, and the first brush filaments 13 are arranged around the third brush filaments 173. Compared with the solution in which the third brush filaments 173 are arranged at the edge of the brush plate 11, the multiple bundles of third brush filaments 173 located in the middle of the brush plate 11 can better separate the first brush filaments 13, so that the first brush filaments 13 are evenly distributed on the surface of the brush plate 11, so that the first brush filaments 13 at various locations can be used to clean the surface of the portion to be cleaned.

[0120] The hair bundles 131 of the first brush 13 and the hair bundles 1730 of the third brush 173 with different functions are arranged at intervals, that is, the hair bundles 131 of the first brush 13 clean the part to be cleaned (such as teeth), and the hair bundles 1730 of the third brush 173 polish the part to be cleaned. The hair bundles 131 of the first brush 13 and the hair bundles 1730 of the third brush 173 arranged at intervals can make the brush plate 11 have different cleaning effects. At the same time, the first brush 13 is respectively arranged in different installation areas 1011 formed by the third brush 173, so that the first brush 13 and the third brush 173 can be intertwined with each other, forming a mutual integration state, and the cleaning and polishing of the part to be cleaned can be intertwined.

[0121] See also Figure 2 and Figure 5 In some embodiments, the buffer portion 171 includes a first surface 1711 and a second surface 1713 opposite to each other, the first surface 1711 and the first surface 101 are located on the same side of the brush body 10 , and the buffer portion 171 is a curved structure protruding from the first surface 1711 to the second surface 1713 .

[0122] Specifically, in the thickness direction Z of the electric toothbrush head 100, the buffer portion 171 includes a first surface 1711 and a second surface 1713 opposite to each other. The first surface 1711 of the buffer portion 171 is on the same side as the first surface 101 of the brush plate 11, and the second surface 1713 of the buffer portion 171 is on the same side as the second surface 103 of the brush plate 11. In the thickness direction Z of the electric toothbrush head 100, the first surface 1711 of the buffer portion 171 is lower than the first surface 101 of the brush plate 11. In the case where the first surface 101 of the brush plate 11 protrudes compared to the first surface 1711 of the buffer portion 171, the buffer portion 171 in a fluid state will not enter the first surface 101 provided on the brush plate 11 during molding, thereby preventing the first brush filament 13 from being difficult to install. The buffer portion 171 is a curved structure protruding from the first surface 1711 to the second surface 1713, that is, the buffer portion 171 is protruding and curved from the side where the first surface 1711 is located to the side where the second surface 1713 is located. The convex curved surfaces of the first surface 1711 and the second surface 1713 may have the same or different shapes. The curved surface shapes include, but are not limited to, arc surfaces, elliptical arc surfaces, or parabolas, etc., and are not limited in the present application. The shapes of the cross sections of the buffer portion 171 cut by the YZ plane in the length direction X may be the same or different, or partly the same and partly different.

[0123] In the electric toothbrush head 100 of the present application, the buffer portion 171 can buffer the impact of the brush body 10 on various parts of the oral cavity, and the curved buffer portion 171 can form an escape space to avoid the part to be cleaned (such as the gums), reducing the risk of gum damage.

[0124] See also Figure 2 and Figure 5 In some embodiments, in the width direction Y of the brush body 10 , the thickness of the buffer portion 171 increases first and then decreases.

[0125] The curvature of the brush plate 11 can be measured by the radius of curvature of the first surface 101 of the brush plate 11, or by the radius of curvature of the second surface 103 of the brush plate 11, or by the radius of curvature of the midplane between the first surface 101 and the second surface 103. The curvature of the buffer portion 171 can be measured by the radius of curvature of the first surface 1711 of the buffer portion 171, or by the radius of curvature of the second surface 1713 of the buffer portion 171, or by the radius of curvature of the midplane between the first surface 1711 and the second surface 1713. The curvature of the brush plate 11 is different from that of the buffer portion 171, so that the brush plate 11 and the buffer portion 171 can be in contact with different oral positions respectively, thereby improving the adhesion of the brush plate 11 to the surface of the portion to be cleaned (such as teeth), thereby improving the cleaning effect.

[0126] In the width direction Y of the brush body 10, the thickness of the buffer portion 171 first increases and then decreases, so that the buffer portion 171 can form a curved structure protruding from the first surface 1711 to the second surface 1713, so that the buffer portion 171 can not only buffer the impact of the brush body 10 on various parts of the oral cavity, but also form an avoidance space to avoid the gums and reduce the risk of gum damage.

[0127] See also Figure 2 In some embodiments, the deformable member 17 is a rubber-coated member formed integrally with the third brush filament 173 and the buffer portion 171 .

[0128] Specifically, the strength of the joint between the integrally formed buffer portion 171 and the third brush filament 173 is relatively high, and the third brush filament 173 is not easy to fall off from the buffer portion 171. In addition, there is no connection gap between the integrally formed buffer portion 171 and the third brush filament 173. Therefore, during the process of using the electric toothbrush head 100 to clean the oral cavity, liquid or foam will not be deposited on the deformable member 17, and the electric toothbrush head 100 can remain clean. At the same time, the third brush filament 173 is a part of the rubber-coated part, which is different from the first brush filament 13 (at least the material is different). Different first brush filaments 13 and third brush filaments 173 can clean and polish the part to be cleaned (such as teeth), that is, the first brush filament 13 and the third brush filament 173 can care for the part to be cleaned in different ways, and the electric toothbrush has a better care effect on the part to be cleaned.

[0129] See also Figure 2 and Figure 7The electric toothbrush 1000 of the embodiment of the present application includes an electric toothbrush head 100 and a brush handle 300 of any one embodiment. The electric toothbrush head 100 is installed on the brush handle 300. When the connecting portion 115 is deformed by force, the second hair-planting portion 113 will be deformed, and the second hair-planting portion 113 will be close to or away from the first hair-planting portion 111, so that the spacing between the first hair-planting portion 111 and the second hair-planting portion 113 changes, thereby avoiding the gums and reducing the risk of gum damage; at the same time, the deformed second hair-planting portion 113 allows the second brush filaments 15 arranged thereon to fit more closely to the surfaces to be cleaned of the part to be cleaned (such as teeth), thereby improving the cleaning effect of the electric toothbrush.

[0130] In the description of this specification, the descriptions with reference to the terms "certain embodiments", "in an example", "exemplarily", etc., mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are 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. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0131] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An electric toothbrush head, characterized in that: include: Rod body; A brush body connected to a rod body, the brush body comprising a brush plate, the brush plate comprising a first hair-planting portion, a second hair-planting portion and a connecting portion, the first hair-planting portion and the second hair-planting portion being arranged at intervals in the width direction of the rod body, the connecting portion being arranged in the interval between adjacent first hair-planting portions and second hair-planting portions, and being used to connect adjacent first hair-planting portions and second hair-planting portions, the thickness of the connecting portion being smaller than the thickness of the second hair-planting portion; and / or the thickness of the connecting portion being smaller than the thickness of the first hair-planting portion, when the brush plate is subjected to force, the connecting portion is deformed, thereby driving the deformation of the second hair-planting portion; A first brush wire, wherein the first brush wire is disposed on the first implanted hair portion; and The second brush filaments are arranged on the second implanted hair portion.

2. The electric toothbrush head according to claim 1, characterized in that: There are two second hair-implanting portions, and the two second hair-implanting portions are respectively arranged on both sides of the first hair-implanting portion in the width direction of the brush plate.

3. The electric toothbrush head according to claim 1, characterized in that: Along the thickness direction of the brush body, the brush plate includes a first surface and a second surface opposite to each other. The brush plate is a curved structure protruding from the first surface toward the second surface. The first brush filaments and the second brush filaments both protrude and extend from the first surface toward a side away from the second surface.

4. The electric toothbrush head according to claim 3, characterized in that: In the width direction of the brush body, the free end surfaces of the first brush filaments and the free end surfaces of the second brush filaments form discontinuous arc surfaces, and the height of the arc surfaces increases first and then decreases.

5. The electric toothbrush head according to claim 1, characterized in that: Each group of the first brush filaments includes a plurality of mutually spaced bristle bundles, and the bristle bundles in the first brush filaments and the second brush filaments are inclined toward a width median plane of the brush plate, and an inclination angle of the bristle bundles in the second brush filaments toward a width median plane of the brush plate is greater than an inclination angle of any of the bristle bundles in the first brush filaments toward a width median plane of the brush plate.

6. The electric toothbrush head according to claim 1, characterized in that: The brush plate comprises a first surface and a second surface facing each other, each group of the first brush filaments comprises a plurality of mutually spaced hair bundles, and an extension direction of the second brush filaments intersects with an extension direction of any hair bundle of the first brush filaments; or, In the same group of the first brush filaments, the extension directions of the plurality of the bristle bundles are the same, and the extension directions of at least two groups of the first brush filaments intersect; or, In the same group of the first brush filaments, the extension directions of the plurality of bristle bundles are different, and one bristle bundle in a group of the first brush filaments at least intersects with one bristle bundle in any group of the first brush filaments except the current group; or In the same group of the first brush filaments, the extension directions of the plurality of bristle bundles are different, and the extension directions of at least two of the bristle bundles intersect.

7. The electric toothbrush head according to claim 6, characterized in that: The number of the hair bundles in the first brush filaments is greater than the number of the hair bundles in the second brush filaments; the number of bristles in each hair bundle in the first brush filaments is less than the number of bristles in the hair bundle in the second brush filaments.

8. The electric toothbrush head according to claim 7, characterized in that: The shape of the cross section of the bristle bundle in the first brush filament is different from the shape of the cross section of the bristle bundle in the second brush filament; or The number of bristles in the hair bundle of the first brush filament in the length direction of the brush plate is the same as the number of bristles in the width direction of the brush plate, and the number of bristles in the hair bundle of the second brush filament in the length direction of the brush plate is greater than the number of bristles in the width direction of the brush plate.

9. The electric toothbrush head according to claim 6, characterized in that: The free end faces of the hair bundles in the first brush filaments are at the same distance from the first surface; or, In the first brush filament, the distance between the free end surface of the hair bundle located at the edge of the first hair-implanted portion and the first surface is smaller than the distance between the free end surface of the hair bundle located at the center of the first hair-implanted portion and the first surface.

10. The electric toothbrush head according to claim 6, characterized in that: The distance between the free end surface of the hair bundle in the second brush filament and the first surface is smaller than the distance between the free end surface of the hair bundle in the first brush filament and the first surface.

11. The electric toothbrush head according to claim 6, characterized in that: The free end surfaces of the hair bundles in the first brush filaments are inclined surfaces, and the inclination angle of the free end surfaces of the higher hair bundles in the first brush filaments is greater than the inclination angle of the free end surfaces of the lower hair bundles.

12. The electric toothbrush head according to claim 1, characterized in that: The length of the first hair implantation portion is greater than the length of the second hair implantation portion; and / or the width of the first hair implantation portion is greater than the width of the second hair implantation portion.

13. The electric toothbrush head according to claim 1, characterized in that: The first surface of the first hair implanting part is provided with a first hair implanting hole, and the first surface of the second hair implanting part is provided with a second hair implanting hole; the first brush wire has copper hair implanted in the first hair implanting hole, and the second brush wire has no copper hair implanted in the second hair implanting hole.

14. The electric toothbrush head according to claim 1, characterized in that: The electric toothbrush head also includes a deformable part, which includes a buffer portion and a third brush filament. The brush plate includes a first surface and a second surface opposite to each other. The brush plate also includes a peripheral side surface connecting the first surface and the second surface. The buffer portion covers at least a portion of the second surface, at least a portion of the peripheral side surface and at least a portion of the first surface. The third brush filament protrudes and extends from the buffer portion and passes through from the second surface of the brush plate to the first surface of the brush plate. The third brush filament is spaced apart from the first brush filament.

15. The electric toothbrush head according to claim 14, characterized in that: The first brush filaments and the third brush filaments are made of different materials; and / or The hardness of the first brush filament is greater than that of the third brush filament, and under the same force, the deformation of the third brush filament is greater than that of the first brush filament; and / or The friction force between the first brush filaments and the portion to be cleaned is smaller than the friction force between the third brush filaments and the portion to be cleaned.

16. The electric toothbrush head according to claim 14, characterized in that: The third brush filaments include a plurality of mutually spaced bristle bundles; at least two bristle bundles of the third brush filaments form an installation area, and a plurality of groups of the first brush filaments are respectively arranged in different installation areas.

17. The electric toothbrush head according to claim 14, characterized in that: The buffer portion includes a first surface and a second surface opposite to each other, the first surface and the first surface are located on the same side of the brush body, and the buffer portion is a curved structure protruding from the first surface to the second surface.

18. The electric toothbrush head according to claim 17, characterized in that: In the width direction of the brush body, the thickness of the buffer portion increases first and then decreases.

19. The electric toothbrush head according to claim 14, characterized in that: The deformable member is a rubber-coated member formed integrally by the third brush filaments and the buffer portion.

20. An electric toothbrush, characterized in that: include: The electric toothbrush head according to any one of claims 1 to 19, and A brush handle, wherein the electric toothbrush head is mounted on the brush handle.

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