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 and bristles. The brush body comprises a bristle planting part, the bristle planting part comprises a bristle planting face and a back face which are opposite, and bristle planting holes are formed in the bristle planting face. The bristles are arranged in the bristle planting holes and extend out of the bristle planting surface, the bristles comprise first bristle areas and second bristle areas, the second bristle areas are at least located on the two opposite sides of the first bristle areas in the width direction of the brush body, the first bristle areas at least comprise six bristle bundles, and the second bristle areas at least comprise four bristle bundles; wherein the end faces of the bristle bundles in the first bristle area form a shape attached to a to-be-cleaned part of teeth in the length direction of the brush body, and the height of at least part of the bristle bundles in the second bristle area is larger than that of at least part of the bristle bundles in the first bristle area. The first bristle area can be well attached to the teeth, the second bristle area can also be well attached to the teeth, and therefore the cleaning effect of the bristles on the teeth is good.

Description

Technical Field

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

[0002] An electric toothbrush is an electronic device that can clean the oral cavity. Usually, an electric toothbrush head includes a brush body and bristles arranged on the side of the brush body where the bristle-planting surface is located. During the operation of the electric toothbrush, the brush body will deform and make the bristles fit the area of ​​the teeth to be cleaned. At the same time, the motor in the brush handle drives the electric toothbrush head to vibrate to clean the surface and gaps of the teeth. However, during the process of the electric toothbrush head vibrating to clean the teeth, if the vibration of the rod body is transmitted to the brush body and causes the bristles to deform, the bristles cannot always form a good fit with the teeth, thereby affecting the cleaning effect of the teeth. Utility Model Content

[0003] The embodiments of the present application provide an electric toothbrush head and an electric toothbrush, which are at least used to solve the problem that when the vibration of the rod body is transmitted to the brush body and causes the bristles to deform, the bristles cannot always form a good fit with the teeth, thereby affecting the cleaning effect of the teeth.

[0004] The electric toothbrush head of the embodiment of the present application includes a rod body, a brush body connected to the rod body, and bristles. The brush body includes a hair-planting portion, and the hair-planting portion includes a hair-planting surface and a back surface opposite to each other, and the hair-planting surface is provided with hair-planting holes. The bristles are arranged in the hair-planting holes and extend from the hair-planting surface, and the bristles include a first bristle area and a second bristle area, and the second bristle area is at least located on the opposite sides of the first bristle area in the width direction of the brush body, and the first bristle area contains at least six bristle bundles, and the second bristle area contains at least four of the bristle bundles; wherein the end faces of the bristle bundles in the first bristle area form a shape that fits the part of the teeth to be cleaned in the length direction of the brush body, and the height of at least part of the bristle bundles in the second bristle area is higher than the height of at least part of the bristle bundles in the first bristle area.

[0005] In some embodiments, in the width direction of the brush body, the second bristle area, the first bristle area and the second bristle area are arranged in sequence.

[0006] In certain embodiments, the second bristle section surrounds the first bristle section.

[0007] In some embodiments, an angle between at least part of the bristle bundles in the second bristle zone and the thickness direction of the brush body is greater than an angle between at least part of the bristle bundles in the first bristle zone and the thickness direction of the brush body.

[0008] In certain embodiments, the top profile of the bristle bundles in the first bristle zone projected along the length direction of the brush body is W-shaped.

[0009] In some embodiments, in the direction from the connecting end of the brush body and the rod body to the free end, the height of the bristle bundles in the first bristle area first gradually decreases, then gradually increases, and then gradually decreases.

[0010] In some embodiments, the top profile of the bristle bundles in the first bristle zone projected along the length direction of the brush body has a highest point and two lowest points, and in the length direction of the brush body, the two lowest points are respectively located on both sides of the highest point.

[0011] In some embodiments, in the length direction and / or width direction of the brush body, the angle between the bristle bundle in the first bristle area that is farther away from the highest point and the thickness direction of the brush body is larger.

[0012] In some embodiments, there is one implanted hair portion, and the bristles include at least two bristle groups, at least two of the bristle groups are located on the implanted hair portion, and when the bristles and / or the implanted hair portion are subjected to force, the brush body is deformed as a whole.

[0013] In some embodiments, the implanted hair portion is one, the bristles include at least two bristle groups, at least two of the bristle groups are located on the implanted hair portion, the implanted hair portion includes multiple areas, each of the areas is provided with the bristle group, and when the bristles and / or the implanted hair portion are subjected to force, at least one of the multiple areas of the implanted hair portion is deformed.

[0014] In some embodiments, there are at least two hair-implanted portions, and the brush body further includes at least one connecting portion. In the length direction of the rod body, at least two of the hair-implanted portions are arranged in sequence at intervals, and the connecting portion is arranged in the interval between two adjacent hair-implanted portions and connects two adjacent hair-implanted portions; when the bristles and / or the hair-implanted portions are subjected to force, at least one of the connecting portions is deformed to drive at least one of the multiple hair-implanted portions to deform.

[0015] In some embodiments, the bendable amount of the brush body from the side where the back surface is located toward the side where the hair-planting surface is located is smaller than the bendable amount of the brush body from the side where the hair-planting surface is located toward the side where the back surface is located.

[0016] In some embodiments, the hardness of the hair implanted portion is greater than that of the connecting portion; and / or the thickness of the hair implanted portion is greater than the thickness of the connecting portion; and / or the width of the hair implanted portion is greater than the width of the connecting portion; and / or the width of the connecting portion is greater than the thickness of the connecting portion.

[0017] In certain embodiments, in the thickness direction of the brush body, the connecting portion does not extend beyond the bristle-implanted surface; and / or, in the thickness direction of the brush body, the connecting portion does not extend beyond the back side; and / or in the thickness direction of the brush body, the distance between the connecting portion and the bristle-implanted surface is greater than the distance between the connecting portion and the back side.

[0018] In some embodiments, the electric toothbrush head also includes a deformation portion that can be deformed under force, and the deformation portion is combined with the hair planting portion of the brush body, the connecting portion of the brush body, and at least one of the rod body to support and / or protect the part combined with the deformation portion.

[0019] In certain embodiments, the deformation portion covers the back surface and the peripheral side surface of the hair-implanting portion, all surfaces of the connecting portion, and all outer surfaces of the rod body, and fills the gaps between adjacent hair-implanting portions.

[0020] In some embodiments, the deformation portion includes a first sub-portion covering the side where the hair implantation surface of the hair implantation portion is located and a second sub-portion covering the side where the back side of the hair implantation portion is located. The first sub-portion is slightly lower than the hair implantation surface, or is flush with the hair implantation surface. The surface of the second sub-portion away from the back side is a smooth curved surface.

[0021] In some embodiments, in the length and / or width direction of the brush body, at least two of the brush filament groups are arranged at intervals, and in the same brush filament group, at least two of the bristle bundles are arranged at intervals; the minimum spacing between the bristle bundles of adjacent brush filament groups satisfies: being greater than the spacing between adjacent bristle bundles in at least one of the brush filament groups.

[0022] In some embodiments, along the length of the brush body, the bristles include a proximal brush filament group and a distal brush filament group which are sequentially connected to the rod body, the proximal brush filament group has more bristle bundles than the distal brush filament group; the minimum spacing between the bristle bundles of adjacent brush filament groups is at least greater than the spacing between adjacent bristle bundles in the proximal brush filament group.

[0023] In some embodiments, along the length of the brush body, the bristles include a proximal brush filament group, an intermediate brush filament group and a distal brush filament group which are sequentially connected to the rod body, the bristles of the intermediate brush filament group are more than the bristles of the proximal brush filament group and the bristles of the distal brush filament group; the spacing between adjacent brush filament groups is at least greater than the spacing between adjacent bristle bundles in the intermediate brush filament group.

[0024] The electric toothbrush of the embodiment of the present application comprises the electric toothbrush head and the brush handle described in the above embodiment, and the electric toothbrush head is installed on the brush handle.

[0025] In the electric toothbrush head and electric toothbrush of the embodiment of the present application, the second bristle area is at least located on the opposite sides of the first bristle area in the width direction of the brush body, the end surface of the bristle bundle in the first bristle area forms a shape that fits the part to be cleaned of the teeth in the length direction of the brush body, and the height of at least part of the bristle bundle in the second bristle area is higher than the height of at least part of the bristle bundle in the first bristle area. During the process of brushing teeth, when the bristle bundle in the first bristle area fits the part to be cleaned of the teeth, the part of the bristle bundle with a higher height in the second bristle area will bend and deform to a certain extent. The part of the bristle bundle that is bent and deformed will have a tendency to restore its original shape, so that the part of the bristle bundle can always keep in contact with the part to be cleaned of the teeth, and the bristle bundle in the second bristle area can achieve a better fit with the part to be cleaned of the teeth. Compared with the current electric toothbrush head, the bristle bundle in the first bristle area of ​​the electric toothbrush head of the present application can fit well with the part to be cleaned of the teeth, and the bristle bundle in the second bristle area can also fit well with the part to be cleaned of the teeth, so that the bristles have a better cleaning effect on the teeth.

[0026] Additional aspects and advantages 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 present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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:

[0028] Figure 1 is a three-dimensional schematic diagram of an electric toothbrush according to certain embodiments of the present application;

[0029] Figure 2 is a three-dimensional schematic diagram of an electric toothbrush head according to certain embodiments of the present application;

[0030] Figure 3 yes Figure 2 A schematic top view of an electric toothbrush head;

[0031] Figure 4 yes Figure 2 A schematic side view of an electric toothbrush head;

[0032] Figure 5 yes Figure 2 A three-dimensional exploded schematic diagram of an electric toothbrush head;

[0033] Figure 6 is a schematic structural diagram of a first bristle area in an electric toothbrush head according to some embodiments of the present application;

[0034] Figure 7 is a schematic structural diagram of the first bristle area in the electric toothbrush head of other embodiments of the present application;

[0035] Figure 8 is a three-dimensional schematic diagram of an electric toothbrush head according to some embodiments of the present application;

[0036] Fig. 9 is a three-dimensional schematic diagram of an electric toothbrush head according to some other embodiments of the present application;

[0037] Fig.10 yes Figure 7 A structural schematic diagram of the deformation of the brush body of the electric toothbrush head;

[0038] Fig.11 is a three-dimensional schematic diagram of an electric toothbrush head according to some other embodiments of the present application;

[0039] Fig.12 yes Fig.10 Schematic diagram of the structure of the brush body deformation of the electric toothbrush head.

[0040] Description of main component symbols:

[0041] 1000, electric toothbrush; 100, electric toothbrush head; 300, brush handle; 10, rod body; 30, brush body; 31, hair-planting part; 311, hair-planting surface; 313, back side; 315, hair-planting hole; 316, first hair-planting part; 317, second hair-planting part; 319, third hair-planting part; 33, connecting part; 50, bristles; 51, first bristle area; 511, highest point; 513, lowest point; 53, second bristle area; 55, brush filament group; 551, hair bundle; 553, proximal brush filament group; 555, distal brush filament group; 557, middle brush filament group; 70, deformation part; 71, first sub-section; 73, second sub-section. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0043] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or position relationship.

[0044] The orientations or positional relationships shown in the drawings are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limitations on the present application.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0048] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0049] An electric toothbrush is an electronic device that can clean the oral cavity. Usually, an electric toothbrush head includes a brush body and bristles arranged on the side of the brush body where the bristle-planting surface is located. During the operation of the electric toothbrush, the brush body will deform and make the bristles fit the area of ​​the teeth to be cleaned. At the same time, the motor in the brush handle drives the electric toothbrush head to vibrate to clean the surface and gaps of the teeth. However, during the process of the electric toothbrush head vibrating to clean the teeth, if the vibration of the rod body is transmitted to the brush body and causes the bristles to deform, the bristles cannot always form a good fit with the teeth, thereby affecting the cleaning effect of the teeth. In order to solve this problem, an embodiment of the present application provides an electric toothbrush head 100( Figure 2 ) and electric toothbrush 1000 ( Figure 1 shown).

[0050] See also Figure 1 The electric toothbrush 1000 of the embodiment of the present application includes an electric toothbrush head 100 and a brush handle 300 , and the electric toothbrush head 100 is installed on the brush handle 300 .

[0051] Among them, the electric toothbrush 1000 is a device for cleaning the oral cavity. The electric toothbrush 1000 includes a detachable brush handle 300 and an electric toothbrush head 100 (hereinafter referred to as "brush head 100"). The brush handle 300 is a structure for the user to hold. Functional modules such as a control area and an interactive area can be set on the surface of the brush handle 300 to facilitate the user to operate and use the various functions of the electric toothbrush 1000. The brush handle 300 is usually a cylindrical structure to make the user's grip feel more comfortable. Preferably, the brush handle 300 may also have an anti-slip structure to prevent the electric toothbrush 1000 from slipping from the hand during use.

[0052] The brush head 100 is connected to one end of the brush handle 300, and a motor is provided inside the brush handle 300. During the brushing process, the motor can drive the brush head 100 to vibrate. For example, the motor can drive the brush head 100 to reciprocate along the axial direction of the brush head 100, and / or the motor can drive the brush head 100 to reciprocate along the circumference of the brush head 100. The brush head 100 can instantly decompose the toothpaste into foam through high-frequency vibration, and can deeply clean the tooth surface and tooth gaps of the teeth to achieve a better cleaning effect. Preferably, the brush head 100 is detachably connected to the brush handle 300, which can facilitate the replacement of different types of brush heads 100 on the one hand, and on the other hand, when the brush head 100 is used for a long enough time to reduce the cleaning effect, it is convenient to replace a new brush head 100.

[0053] See also Figures 2 to 4The electric toothbrush head 100 of the embodiment of the present application includes a rod body 10, a brush body 30 connected to the rod body 10, and bristles 50. The brush body 30 includes a hair planting portion 31, and the hair planting portion 31 includes a hair planting surface 311 and a back surface 313 opposite to each other. The hair planting surface 311 is provided with hair planting holes 315. The bristles 50 are arranged in the bristle implanting holes 315 and extend from the bristle implanting surface 311. The bristles 50 include a first bristle area 51 and a second bristle area 53. The second bristle area 53 is at least located on the opposite sides of the first bristle area 51 in the width direction X of the brush body 30. The first bristle area 51 contains at least six bristle bundles, and the second bristle area 53 contains at least four bristle bundles 551; wherein the end faces of the bristle bundles 551 in the first bristle area 51 form a shape that fits the part of the teeth to be cleaned in the length direction Z of the brush body 30, and the height of at least part of the bristle bundles 551 in the second bristle area 53 is higher than the height of at least part of the bristle bundles 551 in the first bristle area 51.

[0054] Specifically, please combine Figure 1 The rod body 10 is used to connect with the brush handle 300. The rod body 10 is roughly in the shape of a long strip. The rod body 10 can transfer the vibration of the motor of the brush handle 300 to the brush body 30, and the brush body 30 then transfers the vibration to the bristles 50. The bristles 50 can clean the tooth surface of the teeth during the vibration process. A connecting hole is provided on the side of the rod body 10 close to the brush handle 300, and a mounting piece extends from the side of the brush handle 300 close to the brush head 100. When the brush head 100 is installed on the brush handle 300, the connecting hole of the rod body 10 is inserted into the mounting piece and clamped with the mounting piece, and the mounting piece can transfer the vibration of the motor of the brush handle 300 to the rod body 10. When the mounting piece is clamped with the connecting hole of the rod body 10, the rod body 10 can be fixedly connected to the brush handle 300. During the vibration of the brush head 100, the brush head 100 is not easy to fall off relative to the brush handle 300. Furthermore, by applying appropriate force, the rod body 10 can be pulled out from the mounting member, so that the brush head 100 can be removed from the brush handle 300 , so as to facilitate the replacement of the brush head 100 .

[0055] The brush body 30 is used to carry the bristles 50 and is used to connect with the rod body 10. The brush body 30 can transmit the vibration of the rod body 10 to the bristles 50, so that the bristles 50 vibrate to clean the surface of the teeth to be cleaned. The parts of the teeth to be cleaned include the tooth surface, the gap between teeth and the gums of the teeth. The brush body 30 can be an integral structure or a split structure with the rod body 10. In the case where the brush body 30 and the rod body 10 are an integral structure, the brush body 30 and the rod body 10 can be integrally formed. In the case where the brush body 30 and the rod body 10 are split structures, the brush body 30 and the rod body 10 are detachably or non-detachably connected. Among them, the detachable installation method includes but is not limited to threaded connection, screw connection or snap connection. The non-detachable installation method includes but is not limited to welding, gluing connection or interference fit. The present application does not limit the specific connection method of the brush body 30 and the rod body 10.

[0056] See also Figures 2 to 4 The hair implanting part 31 is a structure for installing the bristles 50, and the bristles 50 are arranged on the hair implanting surface 311 of the hair implanting part 31. The hair implanting hole 315 is used for the hair bundle 551 to be installed therein, and each hair implanting hole 315 is installed with a hair bundle 551. One end of the hair bundle 551 is installed in the hair implanting hole 315, and the other end (free end) extends from the hair implanting surface 311 so as to contact the surface to be cleaned of the teeth during the cleaning process. When the area of ​​the hair implanting hole 315 is constant, the number of the hair implanting holes 315 can be but is not limited to one, two, three, four or more. When the number of hair implanting holes 315 is multiple, multiple hair implanting holes 315 can be installed with multiple hair implanting holes 315, so that the density of the bristles 50 distributed on the brush body 30 is relatively large. During the process of brushing teeth, the bristles 50 cover a larger area of ​​the teeth, thereby improving the cleaning effect of the teeth and the efficiency of brushing teeth. The opening area of ​​the hair implanting hole 315 can be, but is not limited to, circular, elliptical, triangular, quadrilateral or other polygonal shapes. The hair implanting hole 315 can be a blind hole that only penetrates the hair implanting surface 311, or the hair implanting hole 315 can be a through hole that penetrates the hair implanting surface 311 and the back surface 313. In the case where the hair implanting hole 315 is a blind hole, when the hair bundle 551 is installed in the hair implanting hole 315, the back surface 313 of the hair implanting part 31 can play a certain role in supporting and fixing the hair bundle 551. In the case where the hair implanting hole 315 is a through hole, when the hair bundle 551 is installed in the hair implanting hole 315, the hair bundle 551 can be fixed on the back surface 313 of the hair implanting part 31 by gluing or fusion.

[0057] The bristles 50 are a structure for cleaning and / or caring for the part to be cleaned of the teeth. The bristles 50 include a plurality of bristle bundles 551, and each bristle bundle 551 includes a plurality of brush filaments. The material of the brush filaments includes, but is not limited to, nylon, polyamide, or silicone. When the material of the brush filaments is a hard material such as nylon or polyamide, the free end of the bristle bundle 551 can contact the tooth surface of the teeth and can extend into the gaps between the teeth for cleaning. When the material of the brush filaments is a flexible material such as silicone, the free end of the bristle bundle 551 can contact the tooth surface of the teeth to perform polishing-like care on the tooth surface of the teeth, and the free end of the bristle bundle 551 can also be used to clean the gums or the inner wall of the oral cavity, which are easily damaged. The cleaning effect of the brush head 100 is good and it will not cause damage to the user's oral cavity.

[0058] See also Figures 2 to 4, the number of bristle bundles 551 in the first bristle zone 51 may be, but not limited to, six, seven, eight or more. The span of the first bristle zone 51 in the distribution direction of the length of the bristles 50 accounts for a large proportion, and may be distributed in the entire length direction of the bristles 50, and the number of bristle bundles 551 is usually not less than six bundles; further, the number of bristle bundles 551 distributed in the length direction Z of the brush body 30 of the first bristle zone 51 is not less than four bundles, and at least two rows of bristle bundles 551 distributed in the width direction X of the brush body 30 are not less than two bundles. In this way, during the process of brushing teeth, the bristle bundles 551 in the first bristle zone 51 cover a large area of ​​the tooth surface, thereby improving the cleaning effect of teeth and the efficiency of brushing teeth. The number of bristle bundles 551 in the second bristle zone 53 may be, but not limited to, four, five, six or more. The number of bristle bundles 551 in the second bristle zone 53 may be the same as or different from the number of bristle bundles 551 in the first bristle zone 51. The second bristle area 53 is at least located on two opposite sides of the first bristle area 51 in the width direction X of the brush body 30, and the number of bristle bundles 551 on each side of the second bristle area 53 is not less than two. In this way, during the process of brushing teeth, the bristle bundles 551 in the second bristle area 53 also cover a larger area of ​​the tooth surface, thereby improving the cleaning effect of teeth and the efficiency of brushing teeth.

[0059] The second bristle area 53 is at least located on opposite sides of the first bristle area 51 in the width direction X of the brush body 30. In one embodiment, in the width direction X of the brush body 30, the second bristle area 53, the first bristle area 51 and the second bristle area 53 are arranged in sequence. At this time, the second bristle area 53 is located on opposite sides of the first bristle area 51 in the width direction X of the brush body 30. In other embodiments, the second bristle area 53 surrounds the first bristle area 51. The second bristle area 53 is arranged at the periphery of the first bristle area 51, that is, the first bristle area 51 is arranged at the center of the brush body 30, and the second bristle area 53 is arranged at the edge of the brush body 30. The end surface of the bristle bundle 551 in the first bristle area 51 forms a shape that fits the tooth surface of the teeth in the length direction Z of the brush body 30, so that during the process of brushing teeth, the bristle bundle 551 in the first bristle area 51 can achieve better fit with the tooth surface of the teeth. During the vibration process, the bristle bundles 551 in the first bristle area 51 can loosen the dental plaque on the tooth surface, tooth gap or gums. The bristle bundles 551 in the second bristle area 53 are located at the edge of the brush body 30. The vibration amplitude of the bristle bundles 551 in the second bristle area 53 is relatively large. The bristle bundles 551 in the second bristle area 53 can sweep away the loosened dental plaque, thereby effectively cleaning the teeth.

[0060] The second bristle area 53 is arranged at the periphery of the first bristle area 51. During the vibration of the bristles 50, the degree of freedom of the bristle bundles 551 of the second bristle area 53 is greater than that of the bristle bundles 551 of the first bristle area 51, that is, the amplitude of the bristle bundles 551 in the second bristle area 53 is greater than that of the bristle bundles 551 in the first bristle area 51. When the bristle bundles 551 of the first bristle area 51 fit the tooth surface of the teeth, the second bristle area 53 may separate from the tooth surface due to the large amplitude, so that the bristles 50 cannot form a good fit with the tooth surface of the teeth during the vibration process, and the cleaning effect of the bristles 50 on the teeth is poor. In the present application, when the height of at least part of the bristle bundles 551 in the second bristle area 53 is higher than the height of at least part of the bristle bundles 551 in the first bristle area 51, when the bristle bundles 551 of the first bristle area 51 fit the tooth surface of the teeth, the bristle bundles 551 with a higher height in the second bristle area 53 will bend and deform to a certain extent. The part of the bristle bundle 551 will tend to restore its original shape, so that the part of the bristle bundle 551 can always keep in contact with the tooth surface. When the part of the bristle bundle 551 is in contact with the tooth surface, the second bristle area 53 can effectively clean the teeth. The bristle bundles 551 in the second bristle area 53 can be well in contact with the tooth surface, and the bristle bundles 551 in the first bristle area 51 can also be well in contact with the tooth surface, so that the bristles 50 have a better cleaning effect on the teeth.

[0061] See also Figures 2 to 4 In one embodiment, the height of some bristle bundles 551 in the second bristle zone 53 is higher than the height of some bristle bundles 551 in the first bristle zone 51. In one example, the height of one bristle bundle 551 in the second bristle zone 53 is higher than the height of one bristle bundle 551 in the first bristle zone 51. In another example, the height of two bristle bundles 551 in the second bristle zone 53 is higher than the height of two bristle bundles 551 in the first bristle zone 51. In yet another example, the height of 1 / 3 of the bristle bundles 551 in the second bristle zone 53 is higher than the height of 1 / 3 of the bristle bundles 551 in the first bristle zone 51. In yet another example, the height of 1 / 2 of the bristle bundles 551 in the second bristle zone 53 is higher than the height of 1 / 2 of the bristle bundles 551 in the first bristle zone 51. At this time, when all the bristle bundles 551 in the first bristle zone 51 are in contact with the tooth surface, the bristle bundles 551 with a higher height in the second bristle zone 53 will bend and deform to a certain extent, so that the bristle bundles 551 can always keep in contact with the tooth surface, and the bristle bundles 551 in the second bristle zone 53 have a better cleaning effect on the teeth.

[0062] In another embodiment, the height of some of the bristle bundles 551 in the second bristle zone 53 is higher than the height of all the bristle bundles 551 in the first bristle zone 51. In one example, the height of one of the bristle bundles 551 in the second bristle zone 53 is higher than the height of all the bristle bundles 551 in the first bristle zone 51. In another example, the height of two of the bristle bundles 551 in the second bristle zone 53 is higher than the height of all the bristle bundles 551 in the first bristle zone 51. In yet another example, the height of 1 / 3 of the bristle bundles 551 in the second bristle zone 53 is higher than the height of all the bristle bundles 551 in the first bristle zone 51. In yet another example, the height of 1 / 2 of the bristle bundles 551 in the second bristle zone 53 is higher than the height of all the bristle bundles 551 in the first bristle zone 51. At this time, when all the bristle bundles 551 in the first bristle area 51 are in contact with the tooth surface, the bristle bundles 551 with a higher height in the second bristle area 53 will bend and deform to a certain extent, so that the bristle bundles 551 can always keep in contact with the tooth surface, and the bristle bundles 551 in the second bristle area 53 have a better cleaning effect on the teeth.

[0063] In another embodiment, the height of all the bristles 551 in the second bristle area 53 is higher than the height of all the bristles 551 in the first bristle area 51. At this time, when all the bristles 551 in the first bristle area 51 are in contact with the tooth surface of the teeth, all the bristles 551 in the second bristle area 53 will bend and deform to a certain extent, so that all the bristles 551 in the second bristle area 53 can always keep in contact with the tooth surface, and the bristles 551 in the second bristle area 53 have a better cleaning effect on the teeth, so that the bristles 50 have a better cleaning effect on the teeth.

[0064] In the electric toothbrush head 100 of the embodiment of the present application, the second bristle area 53 is at least located on the opposite sides of the first bristle area 51 in the width direction X of the brush body 30, and the end faces of the bristle bundles 551 in the first bristle area 51 form a shape that fits the part to be cleaned of the teeth in the length direction Z of the brush body 30, and the height of at least part of the bristle bundles 551 in the second bristle area 53 is higher than the height of at least part of the bristle bundles 551 in the first bristle area 51. During the process of brushing teeth, when the bristle bundles 551 in the first bristle area 51 fit the part to be cleaned of the teeth, the part of the bristle bundles 551 with a higher height in the second bristle area 53 will bend and deform to a certain extent. The part of the bristle bundles 551 that has been bent and deformed will have a tendency to restore its original shape, so that the part of the bristle bundles 551 can always keep in contact with the part to be cleaned of the teeth, and the bristle bundles 551 in the second bristle area 53 can achieve better contact with the part to be cleaned of the teeth. Compared with the current electric toothbrush head 100, the bristles 551 in the first bristle area 51 of the electric toothbrush head 100 of the present application can fit better with the part of the teeth to be cleaned, and the bristles 551 in the second bristle area 53 can also fit better with the part of the teeth to be cleaned, so that the bristles 50 have a better cleaning effect on the teeth.

[0065] The electric toothbrush head 100 is further described below with reference to the accompanying drawings.

[0066] See also Figures 2 to 5 In some embodiments, the angle between at least part of the bristle bundles 551 in the second bristle area 53 and the thickness direction Y of the brush body 30 is greater than the angle between at least part of the bristle bundles 551 in the first bristle area 51 and the thickness direction Y of the brush body 30. At this time, the angle between the bristle bundles 551 in the first bristle area 51 and the thickness direction Y of the brush body 30 is smaller, so that the bristle bundles 551 in the first bristle area 51 can more easily penetrate into the gaps between teeth and the gingival sulcus to remove hard-to-reach plaque and food residues.

[0067] Since the teeth and gums near the inner teeth are usually curved surfaces, when the angle between at least part of the bristles 551 in the second bristle area 53 and the thickness direction Y of the brush body 30 is greater than the angle between at least part of the bristles 551 in the first bristle area 51 and the thickness direction Y of the brush body 30, the part of the bristles 551 in the second bristle area 53 can better adapt to the outer surface of the teeth and achieve more comprehensive cleaning. In addition, during the process of brushing teeth, the bristles 50 cover a larger area of ​​the teeth, so that the bristles 50 have a higher cleaning efficiency for the teeth. In addition, when the angle between at least part of the bristles 551 in the second bristle area 53 and the thickness direction Y of the brush body 30 is greater than the angle between at least part of the bristles 551 in the first bristle area 51 and the thickness direction Y of the brush body 30, the gap between the bristles 551 in the second bristle area 53 is larger, so that the part of the bristles 551 in the second bristle area 53 has a greater degree of freedom during the vibration process, and the part of the bristles 551 in the second bristle area 53 can clean a larger area of ​​teeth. After the bristles 551 in the first bristle zone 51 loosen the plaque on the tooth surface, the bristles 551 in the second bristle zone 53 can sweep away a larger area of ​​the loosened plaque, so that the bristles 50 have a better cleaning effect on the teeth.

[0068] See also Figures 2 to 5 In one embodiment, the angle between some of the bristles 551 in the second bristle area 53 and the thickness direction Y of the brush body 30 is greater than the angle between at least some of the bristles 551 in the first bristle area 51 and the thickness direction Y of the brush body 30. In one example, the angle between one of the bristles 551 in the second bristle area 53 and the thickness direction Y of the brush body 30 is greater than the angle between the bristles 551 in the first bristle area 51 and the thickness direction Y of the brush body 30. In another example, the angle between two of the bristles 551 in the second bristle area 53 and the thickness direction Y of the brush body 30 is greater than the angle between two of the bristles 551 in the first bristle area 51 and the thickness direction Y of the brush body 30. In another example, the angle between 1 / 3 of the bristles 551 in the second bristle area 53 and the thickness direction Y of the brush body 30 is greater than the angle between 1 / 3 of the bristles 551 in the first bristle area 51 and the thickness direction Y of the brush body 30. In another example, the angle between the 1 / 2 of the bristle bundles 551 in the second bristle area 53 and the thickness direction Y of the brush body 30 is greater than the angle between the 1 / 2 of the bristle bundles 551 in the first bristle area 51 and the thickness direction Y of the brush body 30. At this time, the angle between the bristle bundles 551 in the second bristle area 53 and the thickness direction Y of the brush body 30 is larger, the bristles 50 cover a larger area of ​​the teeth, and the bristle bundles 551 in the second bristle area 53 can clean a larger area of ​​the teeth.

[0069] In another embodiment, the angle between some of the bristle bundles 551 in the second bristle region 53 and the thickness direction Y of the brush body 30 is greater than the angle between all the bristle bundles 551 in the first bristle region 51 and the thickness direction Y of the brush body 30. In one example, the angle between one of the bristle bundles 551 in the second bristle region 53 and the thickness direction Y of the brush body 30 is greater than the angle between all the bristle bundles 551 in the first bristle region 51 and the thickness direction Y of the brush body 30. In another example, the angle between two of the bristle bundles 551 in the second bristle region 53 and the thickness direction Y of the brush body 30 is greater than the angle between all the bristle bundles 551 in the first bristle region 51 and the thickness direction Y of the brush body 30. In yet another example, the angle between 1 / 3 of the bristle bundles 551 in the second bristle region 53 and the thickness direction Y of the brush body 30 is greater than the angle between all the bristle bundles 551 in the first bristle region 51 and the thickness direction Y of the brush body 30. In another example, the angle between 1 / 2 of the bristle bundles 551 in the second bristle area 53 and the thickness direction Y of the brush body 30 is greater than the angle between all the bristle bundles 551 in the first bristle area 51 and the thickness direction Y of the brush body 30. At this time, the angle between the bristle bundles 551 in the second bristle area 53 and the thickness direction Y of the brush body 30 is larger, the bristles 50 cover a larger area of ​​the teeth, and the bristle bundles 551 in the second bristle area 53 can clean a larger area of ​​the teeth.

[0070] In another embodiment, the angle between all the bristles 551 in the second bristle area 53 and the thickness direction Y of the brush body 30 is greater than the angle between all the bristles 551 in the first bristle area 51 and the thickness direction Y of the brush body 30. At this time, the angle between all the bristles 551 in the second bristle area 53 and the thickness direction Y of the brush body 30 is larger, the bristles 50 cover a larger area of ​​the teeth, and the bristles 551 in the second bristle area 53 can clean a larger area of ​​the teeth.

[0071] See also Figure 2 , Figure 4 and Figure 6 In some embodiments, the top profile of the bristle bundles 551 in the first bristle area 51 projected along the length direction Z of the brush body 30 is W-shaped. Specifically, in some embodiments, the top profile of the bristle bundles 551 in the first bristle area 51 projected along the length direction Z of the brush body 30 has a highest point 511 and two lowest points 513. In the length direction Z of the brush body 30, the two lowest points 513 are respectively located on both sides of the highest point 511.

[0072] The height of at least part of the bristle bundles 551 in the second bristle area 53 is higher than the height of the bristle bundles 551 at the highest point 511 of the first bristle area 51, so that when the bristle bundles 551 in the first bristle area 51 are in contact with the tooth surface, at least part of the bristle bundles 551 in the second bristle area 53 will bend and deform to a certain extent. The bent and deformed part of the bristle bundles 551 can always keep in contact with the tooth surface, so that the second bristle area 53 can effectively clean the teeth, and the bristles 50 have a better cleaning effect on the teeth. The height of the bristle bundles 551 at the lowest point 513 of the first bristle area 51 is at least higher than the height of the bristle implantation surface 311.

[0073] When the top profile of the bristle bundles 551 in the first bristle area 51 projected along the length direction Z of the brush body 30 is W-shaped, the bristle bundles 551 in the first bristle area 51 can better fit the tooth surface. When the height of at least part of the bristle bundles 551 in the second bristle area 53 is higher than the height of at least part of the bristle bundles 551 in the first bristle area 51, the bristle bundles 551 in the second bristle area 53 can also better fit the tooth surface, so that the bristles 50 of the present application can form a good fit with the teeth, and the bristles 50 have a better cleaning effect on the teeth.

[0074] See also Figure 2 , Figure 4 , Figure 6 and Figure 7 In some embodiments, in the direction from the connection end of the brush body 30 and the rod body 10 to the free end, the height of the bristle bundle 551 in the first bristle area 51 first gradually decreases, then gradually increases, and then gradually decreases. In the length direction Z of the brush body 30, the highest point 511 of the bristle bundle 551 in the first bristle area 51 can be located at the center of the first bristle area 51 ( Figure 6 ), or at any position other than the center position of the first bristle area 51 ( Figure 7 As shown). In the projection along the length direction Z of the brush body 30, with the highest point 511 of the bristle bundles 551 in the first bristle area 51 as the boundary, the top contours of the multiple bristle bundles 551 in the first bristle area 51 close to the rod body 10 form an arc surface with an opening away from the brush head 100, and the top contours of the multiple bristle bundles 551 in the first bristle area 51 away from the rod body 10 also form an arc surface with an opening away from the brush head 100. During the process of brushing teeth, the bristle bundles 551 at the highest point 511 in the first bristle area 51 can extend into the gaps between teeth for cleaning, and the two arc surfaces on both sides of the highest point 511 of the bristle bundles 551 in the first bristle area 51 are both in a shape that can fit with the tooth surface of the teeth, so that the first bristle area 51 can form a better fit with the tooth surface, and the bristles 50 have a better cleaning effect on the teeth.

[0075] During the process of brushing teeth, when the top contour of the bristle bundle 551 in the first bristle area 51 forms two arc surfaces, and the connection point of the two arc surfaces is the highest point, the first bristle area 51 can better fit the shape of the teeth. The bristle bundle 551 at the highest point 511 of the first bristle area 51 can extend into the gap between the teeth to clean the gap between the teeth, thereby achieving a more comprehensive cleaning of the teeth. The two arcs next to the highest point 511 of the first bristle area 51 can fit the tooth surfaces of two adjacent teeth, so that the contact area between the bristle bundle 551 of the first bristle area 51 and the tooth surfaces of the teeth is larger, and the first bristle area 51 has a better cleaning effect on the teeth and a higher cleaning efficiency. In addition, the bristle bundle 551 of the first bristle area 51 can also better fit the gum line, can massage the gums, help improve the oral environment, and reduce the occurrence of oral diseases.

[0076] See also Figure 2 and Figure 5 In some embodiments, in the length direction Z and / or width direction X of the brush body 30, the angle between the bristle bundle 551 in the first bristle area 51 that is farther away from the highest point 511 and the thickness direction Y of the brush body 30 is larger. In one embodiment, in the length direction Z of the brush body 30, the angle between the bristle bundle 551 in the first bristle area 51 that is farther away from the highest point 511 and the thickness direction Y of the brush body 30 is larger. In another embodiment, in the width direction X of the brush body 30, the angle between the bristle bundle 551 in the first bristle area 51 that is farther away from the highest point 511 and the thickness direction Y of the brush body 30 is larger. In another embodiment, in the length and width directions X of the brush body 30, the angle between the bristle bundle 551 in the first bristle area 51 that is farther away from the highest point 511 and the thickness direction Y of the brush body 30 is larger.

[0077] At this time, during the process of brushing teeth, the first bristle area 51 covers a larger area of ​​teeth, so that the first bristle area 51 has a higher cleaning efficiency for teeth. In addition, the distance between the free ends of two adjacent bristle bundles 551 of the first bristle area 51 is larger, so that during the vibration of the bristles 50, the amplitude of the bristle bundles 551 of the first bristle area 51 is larger, the first bristle area 51 can clean a larger area of ​​teeth, and the bristle bundles 551 of the first bristle area 51 have a better effect of loosening the plaque on the surface of the teeth to be cleaned. The first bristle area 51 has a better cleaning effect on teeth, and the bristles 50 have a better cleaning effect on teeth.

[0078] See also Figure 8In some embodiments, there is one implanted hair part 31, and the bristles 50 include at least two brush filament groups 55, and at least two brush filament groups 55 are located on the implanted hair part 31. When the bristles 50 and / or the implanted hair part 31 are subjected to force, the brush body 30 is deformed as a whole. Each brush filament group 55 includes at least two bristle bundles 551. The number of bristle bundles 551 in each brush filament group 55 can be the same or different. The average height of the bristle bundles 551 in each brush filament group 55 can be the same or different. The number of brush filament groups 55 can include but is not limited to one, two, three, four or more, and multiple brush filament groups 55 are spaced apart.

[0079] The bristles 50 and / or the implanted hair part 31 may be subjected to force applied by the user or pressure from the oral cavity. When the bristles 50 and / or the implanted hair part 31 are subjected to pressure, the brush body 30 is deformed as a whole. The overall deformed brush body 30 means that the pressure exerted on each area of ​​the brush body 30 is uniform. For example, when there are two brush filament groups 55 (proximal brush filament group 553 and distal brush filament group 555) on one implanted hair part 31, the pressure exerted on the two brush filament groups 55 is also uniform. When there are three brush filament groups 55 (proximal brush filament group 553, middle brush filament group 557 and distal brush filament group 555) on one implanted hair part 31, the pressure exerted on the individual brush filament groups 55 is also uniform. The overall deformed brush body 30 can evenly transmit the vibration of the brush head 100 to the tooth surface to loosen and peel off dental plaque, thereby achieving a better cleaning effect on the teeth.

[0080] See also Figure 8 and Fig. 9 In other embodiments, the implanted hair portion 31 is one, the bristles 50 include at least two brush filament groups 55, at least two brush filament groups 55 are located on the implanted hair portion 31, the implanted hair portion 31 includes multiple areas, each area is provided with a brush filament group 55, when the bristles 50 and / or the implanted hair portion 31 are subjected to force, at least one of the multiple areas of the implanted hair portion 31 is deformed.

[0081] Specifically, the number of brush filament groups 55 may include, but is not limited to, one, two, three, four or more. The number of regions on the hair implantation portion 31 may include, but is not limited to, two, three, four, five or more. Each region may include, but is not limited to, one, two or more brush filament groups 55. The following description takes one region with one brush filament group 55 as an example. The deformation of the region of the hair implantation portion 31 may drive the deformation of the corresponding brush filament group 55.

[0082] See also Fig.10When there are two brush filament groups 55 (proximal brush filament group 553 and distal brush filament group 555) on a hair implantation portion 31, when the bristles 50 and / or the hair implantation portion 31 are subjected to force, it is possible that the proximal brush filament group 553 is deformed, it is also possible that the distal brush filament group 555 is deformed, or the proximal brush filament group 553 and the distal brush filament group 555 are deformed at the same time. The deformation amplitude of the deformed brush filament group 55 may be consistent or inconsistent. This embodiment only shows the situation where the distal brush filament group 555 is deformed while the proximal brush filament group 553 is not deformed. It can be understood that in the length direction Z of the rod body 10, the distal brush filament group 555 approaches from the end away from the rod body 10 toward the direction close to the rod body 10, while the proximal brush filament group 553 is not deformed.

[0083] See also Fig.11 When there are three brush wire groups 55 (proximal brush wire group 553, middle brush wire group 557 and distal brush wire group 555) on a hair implanting part 31, when the bristles 50 and / or the hair implanting part 31 are subjected to force, it is possible that the proximal brush wire group 553 is deformed, the distal brush wire group 555 is deformed, the middle brush wire group 557 is deformed, or the three brush wire groups 55 are deformed in pairs at the same time (such as the middle brush wire group 557 and the distal brush wire group 555), or the proximal brush wire group 553, the middle brush wire group 557 and the distal brush wire group 555 are all deformed. The deformation amplitude of the deformed brush wire group 55 may be consistent or inconsistent. This application only shows the situation where the middle brush wire group 557 and the distal brush wire group 555 are deformed, and the proximal brush wire group 553 is not deformed. It can be understood that when the bristles 50 and / or the implanted hair portion 31 are subjected to force, in the length direction Z of the rod body 10, the proximal brush filament group 553 does not deform, the middle brush filament group 557 deforms from one end close to the rod body 10 to the end away from the rod body 10, and the distal brush filament group 555 deforms from one end close to the rod body 10 to the end away from the rod body 10.

[0084] At least one of the multiple areas of the implanted hair portion 31 is deformed, so that different areas of the implanted hair portion 31 can adapt to different tooth surface structures, so that the hair bundles 551 on the brush filament group 55 can fit the tooth surfaces with different contours, ensuring the transmission of vibration energy of the brush head 100, thereby enhancing the cleaning effect.

[0085] See also Fig. 9 In some other embodiments, there are at least two hair-implanted portions 31, and the brush body 30 further includes at least one connecting portion 33. In the length direction Z of the rod body 10, at least two hair-implanted portions 31 are arranged in sequence at intervals, and the connecting portion 33 is arranged in the interval between two adjacent hair-implanted portions 31 and connects the two adjacent hair-implanted portions 31; when the bristles 50 and / or the hair-implanted portions 31 are subjected to force, at least one connecting portion 33 is deformed to drive at least one of the multiple hair-implanted portions 31 to deform.

[0086] The connecting portion 33 is a structure that connects two adjacent hair-planting portions 31. In some embodiments, the hair-planting portion 31 and the connecting portion 33 are separately molded structures, and the hair-planting portion 31 and the connecting portion 33 can be fixed to each other by non-detachable means such as gluing, hot-melt connection or interference connection, or can be connected to each other by detachable means such as snap connection, threaded connection or bolt connection, which is not limited here. In other embodiments, the hair-planting portion 31 and the connecting portion 33 are integrally molded structures. A stable connection can be formed between the integrally molded hair-planting portion 31 and the connecting portion 33, which can avoid the presence of gaps at the connection between the hair-planting portion 31 and the connecting portion 33 that lead to plaque deposition on the one hand, and can also avoid the connection between the hair-planting portion 31 and the connecting portion 33 from separating when subjected to force, leading to damage to the brush head 100, thereby extending the service life of the brush head 100.

[0087] The connecting portion 33 is a plate-like structure with a relatively small thickness and is easily bent and deformed by force. When a user uses the brush head 100, the user will apply external force to the bristles 50 and / or the implanted hair portion 31. At this time, the bristles 50 and / or the implanted hair portion 31 will be compressed and bent on the one hand, and on the other hand, the external force will be transmitted to the implanted hair portion 31 connected to the bristles 50. Since only the connecting portion 33 is connected to each other between adjacent implanted hair portions 31, when the implanted hair portions 31 are subjected to force, the connecting portion 33 will bend and deform along the thickness direction Y of the brush body 30 under the action of external force, and the size of the gap between adjacent implanted hair portions 31 will change, so that the brush body 30 will be deformed.

[0088] The brush handle 300 can vibrate and transmit the vibration to the bristles 50 on the brush head 100. The bristles 50 and the hair-implanted portion 31 may be subjected to pressure from structures in the oral cavity such as teeth, and the pressure will be transmitted to the connecting portion 33 connected to the hair-implanted portion 31. When the connecting portion 33 is deformed by force, the hair-implanted portions 31 connected to the connecting portion 33 will move away from or approach each other, so that the distance between adjacent hair-implanted portions 31 changes, thereby driving the brush body 30 to bend and deform. Since the bristles 50 and the hair-implanted portion 31 can both fit at different positions of the tooth surface to be cleaned and transmit different pressures to the connecting portion 33, the direction and magnitude of the deformation of the connecting portion 33 under force are different, thereby driving the brush body 30 to transmit different vibration amplitudes at different fitting positions with the portion to be cared for. Different vibration amplitudes can more fully clean the surface of the teeth and the gaps between the teeth, and the cleaning effect is better.

[0089] See also Fig. 9 In one embodiment, the brush body 30 includes two hair-planting portions 31, namely a first hair-planting portion 316 connected to the rod body 10 and a second hair-planting portion 317 away from the rod body 10 in the length direction Z of the rod body 10. The hair-planting surface 311 of the first hair-planting portion 316 has a larger area than the hair-planting surface 311 of the second hair-planting portion 317.

[0090] On the one hand, the connection between the first hair implantation part 316 and the rod body 10 enhances the support of the first hair implantation part 316. When the brush head 100 is moved in the oral cavity, the first hair implantation part 316 can be ensured to fit the teeth better. The second hair implantation part 317 is away from the rod body 10 and is connected to the first hair implantation part 316 through the connection part 33. Since the connection part 33 is deformable, the second hair implantation part 317 can have a larger range of motion when vibrating, so as to contact different positions of the surface to be cleaned of the teeth, so as to achieve cleaning of various positions of the surface to be cleaned of the teeth. On the other hand, when the brush head 100 is working, the first hair implantation part 316 has a larger contact area with the oral cavity than the second hair implantation part 317. The larger area of ​​the first hair implantation part 316 is designed to improve the cleaning efficiency of the oral cavity. The second hair implantation part 317 is usually closer to the inside of the oral cavity than the first hair implantation part 316. The smaller area of ​​the second hair implantation part 317 can reduce the foreign body sensation in the oral cavity and improve the mobility of the brush head 100 in the oral cavity.

[0091] See also Fig.11 In another embodiment, the brush body 30 includes three hair-planting parts 31, which are a first hair-planting part 316 connected to the rod body 10, a second hair-planting part 317 farthest from the rod body 10 in the length direction Z of the rod body 10, and a third hair-planting part 319 located between the first hair-planting part 316 and the second hair-planting part 317. Among them, the area of ​​the hair-planting surface 311 of the third hair-planting part 319 is larger than the area of ​​the hair-planting surface 311 of the first hair-planting part 316, and the area of ​​the hair-planting surface 311 of the third hair-planting part 319 is larger than the area of ​​the hair-planting surface 311 of the second hair-planting part 317.

[0092] The connection between the first hair implantation portion 316 and the rod body 10 enhances the support of the first hair implantation portion 316. When the brush head 100 is moved in the oral cavity, the first hair implantation portion 316 and the teeth can be better fitted. The second hair implantation portion 317 is farthest from the rod body 10 and is connected to the third hair implantation portion 319 through the connecting portion 33. Since the connecting portion 33 is deformable, the second hair implantation portion 317 can have a larger range of motion when vibrating, thereby contacting different positions of the part to be cared for. When the bristles 50 are subjected to force and the connecting portion 33 is deformed, the first hair implantation portion 316 and the second hair implantation portion 317 can move in various directions away from the third hair implantation portion 319 with the third hair implantation portion 319 as the center, so that the bristles 50 provided on the third hair implantation portion 319 and the first hair implantation portion 316 and the second hair implantation portion 317 can contact different positions of the surface to be cleaned of the teeth, so as to achieve cleaning of various positions of the surface to be cleaned of the teeth. It can be understood that in other embodiments of the present application, the brush body 30 may include four, five or more hair-implanting parts 31 .

[0093] See also Figures 9 to 12In some embodiments, in the thickness direction Y of the brush body 30, the brush body 30 can be bent and deformed in two directions, namely, toward the hair-planting surface 311 and the back surface 313, so as to have a larger deformation angle, so as to fit more angles of the oral cavity, thereby improving the cleaning effect of the brush head 100. The direction in which the brush body 30 is bent and deformed toward the hair-planting surface 311 is the direction in which the bristles 50 are away from each other in the thickness direction Y of the brush body 30 (i.e., the brush body 30 is deformed outward), and at this time, the brush body 30 protrudes from the back surface 313 toward the hair-planting surface 311. The direction in which the brush body 30 is bent and deformed toward the back surface 313 is the direction in which the bristles 50 are close to each other in the thickness direction Y of the brush body 30 (i.e., the brush body 30 is deformed inward), and at this time, the brush body 30 protrudes from the hair-planting surface 311 toward the back surface 313.

[0094] See also Figures 9 to 12 In some embodiments, the bendable amount of the brush body 30 convexly deforming from the side where the back surface 313 is located toward the side where the hair-planting surface 311 is located is less than the bendable amount of the brush body 30 convexly deforming from the side where the hair-planting surface 311 is located toward the side where the back surface 313 is located.

[0095] The bendable amount refers to the maximum degree of bending or bending range that the brush body 30 can withstand when deformed by external force, which can be measured by the curve radius after bending deformation. Generally, the larger the curve radius, the smaller the bendable amount, and the smaller the curve radius, the larger the bendable amount. When deformed by external force, the pressure of bending deformation on the side facing the back side 313 of the oral cavity to which the bristles 50 and the hair-planting part 31 are subjected is generally greater than the pressure of bending deformation on the side facing the hair-planting surface 311. Therefore, the bendable amount of bending (convex) deformation of the brush body 30 on the side facing the back side 313 is greater than the bendable amount of bending (convex) deformation on the side facing the hair-planting surface 311, so that the brush body 30 can withstand pressures of different directions and sizes, thereby transmitting different vibration amplitudes. The bending deformation of the brush body 30 on the side facing the hair-planting surface 311 is smaller, which can ensure that the bristles 50 fit the tooth surface. The bending deformation of the brush body 30 on the side facing the back side 313 is larger, which can absorb and disperse the pressure on the tooth surface to be cleaned, reduce the direct impact on the tooth surface to be cleaned, and thus adapt to different oral care needs.

[0096] See also Figures 9 to 12In some embodiments, the hardness of the implanted hair portion 31 is greater than that of the connecting portion 33. The material of the implanted hair portion 31 may be a material with a greater hardness than that of the connecting portion 33. The material of the implanted hair portion 31 may also be the same as that of the connecting portion 33, but due to reasons such as size and processing technology, the formed implanted hair portion 31 is harder than the connecting portion 33. The implanted hair portion 31 with greater hardness has a better supporting effect on the bristles 50 in the implanted hair holes 315, and can ensure that the vibration of the brush body 30 is transmitted from the bristles 50 to the tooth surface to be cleaned. The connecting portion 33 with a smaller hardness can produce a larger deformation amplitude and drive the brush body 30 to produce a larger deformation amplitude, so that the brush body 30 and the tooth surface to be cleaned have a better fitting effect. On the other hand, when the brush head 100 vibrates, the deformation of the connecting portion 33 with a smaller hardness can cause the adjacent implanted hair portion 31 to produce a larger range of movement and cover a larger cleaning area. On the other hand, when the brush head 100 falls, the brush body 30 is the part that is most likely to fall to the ground first, and the connecting portion 33 can provide a larger deformation range for the electric toothbrush head 100, so that the electric toothbrush head 100 has better anti-fall breakage characteristics.

[0097] See also Figures 9 to 12 In some embodiments, the thickness of the hair-implanted portion 31 is greater than the thickness of the connecting portion 33. The thickness of the connecting portion 33 refers to the distance between the two opposite side surfaces of the connecting portion 33 in the thickness direction Y of the brush body 30. The thickness of the hair-implanted portion 31 refers to the distance between the hair-implanted surface 311 and the back surface 313 of the hair-implanted portion 31 along the thickness direction Y of the brush body 30. When the thickness of the connecting portion 33 is less than the thickness of the hair-implanted portion 31, the connecting portion 33 is more easily deformed under stress than the hair-implanted portion 31. When adjacent hair-implanted portions 31 are spaced apart from each other, the hair-implanted portions 31 can move closer to and / or farther away from each other when the connecting portion 33 is deformed under stress, so that the bristles 50 on the hair-implanted portion 31 move to different positions, thereby improving the cleaning effect of the brush head 100.

[0098] See also Figures 9 to 12 In some embodiments, the width of the implanted hair portion 31 is greater than the width of the connecting portion 33. The width of the connecting portion 33 refers to the maximum distance between the two opposite side surfaces of the connecting portion 33 in the width direction X of the brush body 30. The width of the implanted hair portion 31 refers to the maximum distance of the circumferential side along the width direction X of the brush head 100. In the case where the width of the implanted hair portion 31 is greater than the width of the connecting portion 33, the connecting portion 33 is more easily deformed in the width direction X when subjected to force than the implanted hair portion 31. In the case where adjacent implanted hair portions 31 are spaced apart from each other, the implanted hair portions 31 can move closer to and / or farther away from each other when the connecting portion 33 is deformed under force, so that the bristles 50 on the implanted hair portion 31 move to different positions, thereby improving the cleaning effect of the brush head 100.

[0099] See also Figures 9 to 12 In some embodiments, the width of the connecting portion 33 is greater than the thickness of the connecting portion 33, which means that the dimension of the connecting portion 33 in the width direction X of the brush body 30 is greater than the dimension of the connecting portion 33 in the thickness direction Y of the brush body 30. In the case where the width of the connecting portion 33 is greater than the thickness of the connecting portion 33, on the one hand, the thickness of the hair-implanted portion 31 is greater than the thickness of the connecting portion 33, and the thicker hair-implanted portion 31 has better support characteristics for the bristles 50. When subjected to force, the thinner connecting portion 33 is more likely to deform in its own thickness direction Y (i.e., the force direction of the bristles 50), so as to drive the hair-implanted portions 31 to move closer to each other and / or away from each other, so that the bristles 50 on different hair-implanted portions 31 produce different vibration effects. On the other hand, the width of the hair-implanted portion 31 is greater than the width of the connecting portion 33, and the wider hair-implanted portion 31 has better support characteristics for the bristles 50. The narrower connecting portion 33 is more likely to deform when subjected to force, so as to drive the hair-implanted portions 31 to move closer to each other and / or away from each other, so that the bristles 50 on different hair-implanted portions 31 produce different vibration effects.

[0100] See also Figures 9 to 12 In some embodiments, in the thickness direction Y of the brush body 30, the connecting portion 33 does not extend beyond the hair-implanting surface 311, that is, the two opposite side surfaces of the connecting portion 33 in the thickness direction Y are both located on the side of the hair-implanting surface 311 close to the back surface 313. In other embodiments, in the thickness direction Y of the brush body 30, the connecting portion 33 does not extend beyond the back surface 313, that is, the two opposite side surfaces of the connecting portion 33 in the thickness direction Y are both located on the side of the back surface 313 close to the hair-implanting surface 311. In still other embodiments, in the thickness direction Y of the brush body 30, the connecting portion 33 does not extend beyond the hair-implanting surface 311, and the connecting portion 33 does not extend beyond the back surface 313. The connecting portion 33 does not extend beyond the hair-implanting surface 311, which allows the hair-implanting surface 311 to bend (convex) and deform toward the side where the hair-implanting surface 311 is located in the thickness direction Y of the brush body 30, and has a better deformation space. The connecting portion 33 does not extend beyond the hair-implanting surface 311 , so that the back surface 313 has a better deformation space to bend and deform in the thickness direction Y of the brush body 30 toward the side where the hair-implanting surface 311 is located.

[0101] See also Figures 9 to 12 In some embodiments, in the thickness direction Y of the brush body 30, the distance between the connecting portion 33 and the hair-planting surface 311 is greater than the distance between the connecting portion 33 and the back surface 313. When the brush body 30 convexly deforms from the side where the hair-planting surface 311 is located toward the side where the back surface 313 is located, the connecting portion 33 is closer to the back surface 313 in the thickness direction Y of the brush body 30, which can make the deformation angle of adjacent hair-planting portions 31 when approaching each other smaller than the deformation angle of adjacent hair-planting portions 31 when moving away from each other, thereby limiting the adjacent hair-planting portions 31 when approaching each other, controlling the approach distance of the bristles 50 on the hair-planting portions 31, and preventing the bristles 50 from being squeezed against each other and deforming, thereby affecting the cleaning effect.

[0102] See also Figures 9 to 12 In some embodiments, in the length and / or width direction X of the brush body 30, at least two brush filament groups 55 are arranged at intervals, and in the same brush filament group 55, at least two bristle bundles 551 are arranged at intervals; the minimum spacing between the bristle bundles 551 of adjacent brush filament groups 55 satisfies: it is greater than the spacing between adjacent bristle bundles 551 in at least one of the brush filament groups 55.

[0103] Specifically, when the brush body 30 includes the first hair implantation portion 316 and the second hair implantation portion 317, the first hair implantation portion 316 is provided with a first brush filament group 55, and the second hair implantation portion 317 is provided with a second brush filament group 55. Because there is a gap between the first hair implantation portion 316 and the second hair implantation portion 317, there is also a gap between the first brush filament group 55 provided on the first hair implantation portion 316 and the second brush filament group 55 provided on the second hair implantation portion 317. When the brush body 30 includes the first hair implantation portion 316, the second hair implantation portion 317 and the third hair implantation portion 319, the first brush filament group 55 is provided on the first hair implantation portion 316, the second brush filament group 55 is provided on the second hair implantation portion 317, and the third brush filament group 55 is provided on the third hair implantation portion 319. There is a certain gap between each of the three brush filament groups 55. The brush wire groups 55 are arranged at intervals, so that a cleaning area corresponding to the brush wire groups 55 can be formed on the same implanted hair portion 31, so that the brush head 100 can cover different areas when in use, thereby improving cleaning efficiency. At the same time, the brush wire groups 55 arranged at intervals can form multiple force points in the oral cavity, so that the part of the oral cavity that contacts the brush wire group 55 is evenly stressed, thereby avoiding a single force point from causing excessive pressure on the oral cavity.

[0104] See also Figures 9 to 12 In some embodiments, the maximum distance between adjacent tufts 551 of each brush filament group 55 is less than the minimum distance between tufts 551 between adjacent brush filament groups 55. Exemplarily, in the tufts 551 of the first brush filament group 55 and the second brush filament group 55, for the tufts 551 in the first brush filament group 55, for example, the spacing between adjacent tufts 551 in the first brush filament group 55 includes L1, L2, L3, and L4, and satisfies: L1>L2>L3>L4. When the minimum spacing between tufts 551 of adjacent brush filament groups 55 is S1, S1 satisfies any one of: S1>L4, S1>L3, S1>L2, and S1>L1.

[0105] When the minimum spacing between the bristle bundles 551 of adjacent bristle groups 55 is greater than the spacing between adjacent bristle bundles 551 in at least one of the bristle groups 55, the interaction between different bristle groups 55 is reduced, which can reduce the influence of the bristle groups 55 on the deformation of the brush body 30. When the brush head 100 is deformed inwardly by force during the cleaning process, the adjacent bristle groups 55 will not interfere with each other, and the bristle bundles 551 between adjacent bristle groups 55 will not abut against each other to affect deformation. On the other hand, the distance between adjacent bristle bundles 551 of each bristle group 55 is small, which can allow more bristle bundles 551 to be arranged on the same bristle implantation portion 31, thereby improving the cleaning effect of the electric toothbrush head 100.

[0106] See also Fig. 9 In some embodiments, along the length of the brush body 30, the bristles 50 include a proximal brush filament group 553 and a distal brush filament group 555 which are sequentially connected to the rod body 10, and the proximal brush filament group 553 has more bristle bundles 551 than the distal brush filament group 555; the minimum spacing between the bristle bundles 551 of adjacent brush filament groups 55 is at least greater than the spacing between adjacent bristle bundles 551 in the proximal brush filament group 553.

[0107] In one example, the minimum spacing between the bristle bundles 551 of the proximal brush filament group 553 and the distal brush filament group 555 is greater than the spacing between adjacent bristle bundles 551 in the proximal brush filament group 553. In another example, the minimum spacing between the bristle bundles 551 of the proximal brush filament group 553 and the distal brush filament group 555 is greater than the spacing between adjacent bristle bundles 551 in the proximal brush filament group 553, and the minimum spacing between the bristle bundles 551 of the proximal brush filament group 553 and the distal brush filament group 555 is also greater than the spacing between adjacent bristle bundles 551 in the proximal brush filament group 553. When the minimum spacing between the bristle bundles 551 of the proximal brush filament group 553 and the distal brush filament group 555 is at least greater than the spacing between adjacent bristle bundles 551 in the proximal brush filament group 553, the interaction between the proximal brush filament group 553 and the distal brush filament group 555 is reduced, and the influence of the brush filament group 55 on the deformation of the brush body 30 can be reduced. When the brush head 100 is deformed inwardly by force during the cleaning process, the proximal brush filament group 553 and the distal brush filament group 555 will not interfere with each other, and the bristle bundles 551 between the proximal brush filament group 553 and the distal brush filament group 555 will not abut against each other to affect deformation.

[0108] See also Figure 5 and Fig.11 In other embodiments, along the length of the brush body 30, the bristles 50 include a proximal brush filament group 553, an intermediate brush filament group 557 and a distal brush filament group 555 which are sequentially connected to the rod body 10, and the bristle bundles 551 of the intermediate brush filament group 557 are more than the bristle bundles 551 of the proximal brush filament group 553 and the bristle bundles 551 of the distal brush filament group 555; the spacing between adjacent brush filament groups 55 is at least greater than the spacing between adjacent bristle bundles 551 in the intermediate brush filament group 557.

[0109] Among them, the spacing between the proximal brush filament group 553 and the middle brush filament group 557 is at least greater than the spacing between adjacent hair bundles 551 in the middle brush filament group 557. The spacing between the distal brush filament group 55 and the middle brush filament group 557 is at least greater than the spacing between adjacent hair bundles 551 in the middle brush filament group 557. At this time, the interaction between the proximal brush filament group 553 and the middle brush filament group 557 is reduced, and the interaction between the distal brush filament group 555 and the middle brush filament group 557 is reduced, which can reduce the influence of the brush filament group 55 on the deformation of the brush body 30. When the brush head 100 is deformed inwardly under force during the cleaning process, the proximal brush filament group 553 and the middle brush filament group 557 will not interfere with each other, and the hair bundles 551 between the proximal brush filament group 553 and the middle brush filament group 557 will not abut each other to affect deformation. The distal brush filament group 555 and the middle brush filament group 557 will not interfere with each other, and the hair bundles 551 between the distal brush filament group 555 and the middle brush filament group 557 will not abut each other to affect deformation.

[0110] See also Figure 5 , Figure 8 , Fig. 9 and Fig.11 In some embodiments, the electric toothbrush head 100 further includes a deformable portion 70 that is deformable under force, and the deformable portion 70 is combined with at least one of the hair-planting portion 31, the connecting portion 33, and the rod body 10 to support and / or protect the portion combined with the deformable portion 70. Specifically, in some embodiments, the deformable portion 70 covers the back surface 313 and the peripheral side surface of the hair-planting portion 31, all surfaces of the connecting portion 33, and all outer surfaces of the rod body 10, and fills the gaps between adjacent hair-planting portions 31.

[0111] The deformation part 70 can be a soft glue or other elastic materials. The deformation part 70 can produce elastic deformation to prevent the hair-planting part 31 from colliding with the oral cavity and teeth. The two opposite sides of the connecting part 33 along the thickness direction Y of the brush head 100 will face the gap between the hair-planting parts 31. The deformation part 70 used for protection and filling can fill the gap between the hair-planting parts 31 and wrap the opposite sides of the connecting part 33 to protect the connecting part 33 and prevent the connecting part 33 from breaking. The deformation part 70 wrapped on the outside of the rod body 10 can bring a shock-absorbing effect to the rod body 10 to prevent the rod body 10 from breaking when the brush head 100 falls. In addition, the deformation part 70 is a soft glue structure, and the deformation part 70 can fill the gap between the hair-planting parts 31 and cover the hair-planting parts 31 and the surrounding side surfaces. Therefore, the deformation part 70 is not easy to fall off from the hair-planting part 31, and there is no obvious boundary between the deformation part 70 and the hair-planting part 31, so it is not easy to form dental plaque deposition. The deformation part 70 can be formed on the structure such as the hair implanting part 31 by hot-melting the soft rubber material and then solidifying it. When the hair implanting surface 311 is protruding compared to the deformation part 70, the soft rubber material in a fluid state will not enter the hair implanting hole 315 provided on the first side of the hair implanting part 31, thereby avoiding the difficulty of installing the bristles 50 in the hair implanting hole 315.

[0112] See also Figure 5 , Figure 8 , Fig. 9 and Fig.11 In some embodiments, the deformation portion 70 includes a first sub-portion 71 covering the side where the hair implantation surface 311 of the hair implantation portion 31 is located, and a second sub-portion 73 covering the side where the back surface 313 of the hair implantation portion 31 is located. The first sub-portion 71 is slightly lower than the hair implantation surface 311, or is flush with the hair implantation surface 311. The surface of the second sub-portion 73 facing away from the back surface 313 is a smooth curved surface.

[0113] Among them, the first sub-portion 71 can fill the gaps between multiple hair-planting surfaces 311, and can also fill the gaps between each hair-planting surface 311 and the connecting portion 33, so as to avoid the brush head 100 from being uneven between the hair-planting surface 311 and the connecting portion 33, resulting in residual plaque affecting use. The first sub-portion 71 does not exceed the hair-planting surface 311, which can prevent the material of the first sub-portion 71 from entering the hair-planting hole 315, thereby preventing the hair bundle 551 from being difficult to install in the hair-planting hole 315. The second sub-portion 73 can fill the gaps between multiple back sides 313, and can also fill the gaps between each back side 313 and the connecting portion 33, so that each back side 313 is connected to the deformation portion 70. It prevents the brush head 100 from having an uneven surface on the side where the back side 313 is located, resulting in residual plaque affecting use. The surface of the second sub-portion 73 away from the back surface 313 is a smooth curved surface, which can fill and compensate for the uneven shape of the brush body 30, and fill the gap between the two opposite sides of the connecting portion 33 along the thickness direction Y of the brush rod facing the implanted hair portion 31, so that the brush body 30 is easier to clean and less likely to harbor dirt. In addition, during the process of brushing teeth, if the surface of the second sub-portion 73 away from the back surface 313 is a smooth curved surface, the user's experience is better, and the problem of the uneven shape of the back surface 313 bumping or scratching the oral cavity can be avoided.

[0114] The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. At the same time, other implementation methods can be derived from the above-mentioned embodiments, so that structural and logical replacements and changes can be made without departing from the scope of this disclosure.

[0115] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. An electric toothbrush head, characterized in that: include: Rod body; A brush body connected to the rod body, the brush body comprising a hair-planting portion, the hair-planting portion comprising a hair-planting surface and a back surface facing each other, the hair-planting surface being provided with hair-planting holes; and Bristles, the bristles are arranged in the bristle-planting holes and extend from the bristle-planting surface, the bristles include a first bristle area and a second bristle area, the second bristle area is at least located on two opposite sides of the first bristle area in the width direction of the brush body, the first bristle area includes at least six bristle bundles, and the second bristle area includes at least four of the bristle bundles; The end faces of the bristle bundles in the first bristle area form a shape that fits the part of the teeth to be cleaned in the length direction of the brush body, and the height of at least part of the bristle bundles in the second bristle area is higher than the height of at least part of the bristle bundles in the first bristle area.

2. The electric toothbrush head according to claim 1, characterized in that: In the width direction of the brush body, the second bristle area, the first bristle area and the second bristle area are arranged in sequence; or The second bristle zone surrounds the first bristle zone.

3. The electric toothbrush head according to claim 1, characterized in that: An angle between at least part of the bristle bundles in the second bristle area and the thickness direction of the brush body is greater than an angle between at least part of the bristle bundles in the first bristle area and the thickness direction of the brush body.

4. The electric toothbrush head according to claim 1, characterized in that: The top profile of the bristle bundles in the first bristle area projected along the length direction of the brush body is W-shaped; or, In the direction from the connecting end of the brush body and the rod body to the free end, the height of the bristle bundles in the first bristle area first gradually decreases, then gradually increases, and then gradually decreases.

5. The electric toothbrush head according to claim 1, characterized in that: The top profile of the bristle bundles in the first bristle area projected along the length direction of the brush body has a highest point and two lowest points, and in the length direction of the brush body, the two lowest points are respectively located on both sides of the highest point.

6. The electric toothbrush head according to claim 5, characterized in that: In the length direction and / or width direction of the brush body, the angle between the bristle bundle in the first bristle area that is farther away from the highest point and the thickness direction of the brush body is larger.

7. The electric toothbrush head according to claim 1, characterized in that: There is one implanted hair portion, and the bristles include at least two bristle groups. At least two of the bristle groups are located on the implanted hair portion. When the bristles and / or the implanted hair portion are subjected to force, the brush body is deformed as a whole.

8. The electric toothbrush head according to claim 1, characterized in that: The implanted hair portion is one, and the bristles include at least two bristle groups, at least two of the bristle groups are located on the implanted hair portion, and the implanted hair portion includes multiple areas, each of the areas is provided with the bristle group, and when the bristles and / or the implanted hair portion are subjected to force, at least one of the multiple areas of the implanted hair portion is deformed.

9. The electric toothbrush head according to claim 1, characterized in that: There are at least two hair-implanted portions, and the brush body further includes at least one connecting portion. In the length direction of the rod body, at least two of the hair-implanted portions are arranged in sequence at intervals, and the connecting portion is arranged in the interval between two adjacent hair-implanted portions and connects two adjacent hair-implanted portions; when the bristles and / or the hair-implanted portions are subjected to force, at least one of the connecting portions is deformed to drive at least one of the multiple hair-implanted portions to deform.

10. The electric toothbrush head according to any one of claims 7 to 9, characterized in that: The bendable amount of the brush body from the side where the back surface is located to the side where the hair-planting surface is located is smaller than the bendable amount of the brush body from the side where the hair-planting surface is located to the side where the back surface is located.

11. The electric toothbrush head according to claim 9, characterized in that: The hardness of the hair implanting portion is greater than that of the connecting portion; and / or, The thickness of the hair implantation portion is greater than the thickness of the connection portion; and / or, The width of the hair implantation portion is greater than the width of the connecting portion; and / or The width of the connecting portion is greater than the thickness of the connecting portion.

12. The electric toothbrush head according to claim 9, characterized in that: In the thickness direction of the brush body, the connecting portion does not extend beyond the hair implantation surface; and / or, In the thickness direction of the brush body, the connecting portion does not extend beyond the back surface; and / or In the thickness direction of the brush body, the distance between the connecting portion and the hair implantation surface is greater than the distance between the connecting portion and the back surface.

13. The electric toothbrush head according to claim 1, characterized in that: The electric toothbrush head also includes: A deformable portion that can be deformed by force, the deformable portion is combined with the hair planting portion of the brush body, the connecting portion of the brush body, and at least one of the rod body to support and / or protect the part combined with the deformable portion.

14. The electric toothbrush head according to claim 13, characterized in that: The deformation part covers the back and peripheral side surfaces of the hair-implanting part, all surfaces of the connecting part, and all outer surfaces of the rod body, and fills the gaps between adjacent hair-implanting parts.

15. The electric toothbrush head according to claim 13, characterized in that: The deformation portion comprises: A first sub-portion covering the side of the hair-implanting surface of the hair-implanting portion, wherein the first sub-portion is slightly lower than the hair-implanting surface or is flush with the hair-implanting surface; and A second sub-portion covering the side of the back side of the hair implantation portion, wherein the surface of the second sub-portion away from the back side is a smooth curved surface.

16. The electric toothbrush head according to claim 7 or 8, characterized in that: In the length and / or width direction of the brush body, at least two of the brush filament groups are arranged at intervals, and in the same brush filament group, at least two of the bristle bundles are arranged at intervals; The minimum spacing between the bristle bundles of adjacent brush filament groups satisfies: being greater than the spacing between the adjacent bristle bundles in at least one of the brush filament groups.

17. The electric toothbrush head according to claim 16, characterized in that: Along the length of the brush body, the bristles include a proximal brush filament group and a distal brush filament group which are sequentially connected to the rod body, the proximal brush filament group has more bristle bundles than the distal brush filament group; the minimum spacing between the bristle bundles of adjacent brush filament groups is at least greater than the spacing between adjacent bristle bundles in the proximal brush filament group.

18. The electric toothbrush head according to claim 16, characterized in that: Along the length of the brush body, the bristles include a proximal brush filament group, an intermediate brush filament group and a distal brush filament group which are sequentially connected to the rod body, the bristles of the intermediate brush filament group are more than the bristles of the proximal brush filament group and the bristles of the distal brush filament group; the spacing between adjacent brush filament groups is at least greater than the spacing between adjacent bristle bundles in the intermediate brush filament group.

19. An electric toothbrush, characterized in that: include: The electric toothbrush head according to any one of claims 1 to 18, and A brush handle, wherein the electric toothbrush head is mounted on the brush handle.

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