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 brush hair is arranged in the hair planting hole and extends out of the hair planting surface, the brush hair comprises at least two brush hair groups, each brush hair group comprises at least two hair bundles, and in the length direction of the brush body, the brush hair group farthest from the rod body is higher than any other brush hair group. According to the electric toothbrush head, in the tooth brushing process, when the electric toothbrush head cleans teeth close to the inner side and under the condition that any brush wire group close to the rod body is attached to the teeth, the brush wire group farthest from the rod body can also be attached to the teeth due to the fact that the brush wire group farthest from the rod body is high; therefore, the whole bristles can be well attached to the teeth, and the cleaning effect of the electric toothbrush head 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. When the electric toothbrush is working, the bristles fit the area of ​​the teeth to be cleaned. At the same time, the motor in the handle of the electric toothbrush drives the electric toothbrush head to vibrate to clean the surface and gaps of the teeth. However, when the electric toothbrush head cleans the inner teeth, the bristles at the far end of the brush body cannot 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 electric toothbrush head is used to clean inner teeth, the bristles at the far end of the brush body cannot 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, 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 at least two bristle groups, each of which includes at least two bristle bundles, and in the length direction of the brush body, the height of the brush group farthest from the rod body is higher than the height of any other brush group.

[0005] In some embodiments, in the length direction of the brush body, the brush filament group includes a distal brush filament group farthest from the rod body, and the height of the distal brush filament group is higher than the height of any other brush filament group; among the bristle bundles of the distal brush filament group, the height of the bristle bundles far away from the rod body is higher than the height of the bristle bundles close to the rod body.

[0006] In some embodiments, in the length direction of the brush body, the brush filament group includes a proximal brush filament group closest to the rod body, and among the bristle bundles of the proximal brush filament group, the height of the bristle bundles close to the rod body is higher than the height of the bristle bundles far from the rod body.

[0007] In some embodiments, in the length direction of the brush body, the brush filament group includes a distal brush filament group away from the rod body, a proximal brush filament group close to the rod body, and a middle brush filament group located between the distal brush filament group and the proximal brush filament group, the height of the distal brush filament group is higher than the height of the proximal brush filament group, and higher than the height of the middle brush filament group; in the hair bundles of the middle brush filament group, the heights of each hair bundle are different.

[0008] In some embodiments, the height of the middle brush filament group is lower than the height of the proximal brush filament group.

[0009] In some embodiments, the angle between any bristle bundle in the distal brush filament group passing through the mid-width plane of the brush body and the thickness direction of the brush body is greater than the angle between any bristle bundle in the middle brush filament group passing through the mid-width plane of the brush body and the thickness direction of the brush body; the angle between any bristle bundle in the proximal brush filament group passing through the mid-width plane of the brush body and the thickness direction of the brush body is greater than the angle between any bristle bundle in the middle brush filament group passing through the mid-width plane of the brush body and the thickness direction of the brush body.

[0010] In some embodiments, in the length direction of the brush body, the brush filament group includes a distal brush filament group away from the rod body and a proximal brush filament group close to the rod body; the density of the bristle bundles in the distal brush filament group is greater than the density of the bristle bundles in the proximal brush filament group.

[0011] 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.

[0012] 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.

[0013] 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.

[0014] 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.

[0015] 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.

[0016] 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.

[0017] 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.

[0018] 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.

[0019] 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.

[0020] 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.

[0021] In the electric toothbrush head and electric toothbrush of the embodiment of the present application, in the length direction of the brush body, the height of the brush wire group farthest from the rod body is higher than the height of any other brush wire group. During the process of brushing teeth, when the electric toothbrush head is cleaning the inner teeth, if any brush wire group close to the rod body fits with the teeth, the brush wire group farthest from the rod body can also fit with the teeth because the height of the brush wire group farthest from the rod body is higher, so that the bristles as a whole can form a better fit with the teeth, and the electric toothbrush head has a better cleaning effect on the teeth.

[0022] 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

[0023] 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:

[0024] Figure 1 is a three-dimensional schematic diagram of an electric toothbrush according to certain embodiments of the present application;

[0025] Figure 2 is a three-dimensional schematic diagram of an electric toothbrush head according to certain embodiments of the present application;

[0026] Figure 3 yes Figure 2 A schematic side view of an electric toothbrush head;

[0027] Figure 4 yes Figure 2 A three-dimensional exploded schematic diagram of an electric toothbrush head;

[0028] Figure 5 is a three-dimensional schematic diagram of an electric toothbrush head according to some embodiments of the present application;

[0029] Figure 6 is a three-dimensional schematic diagram of an electric toothbrush head according to some other embodiments of the present application;

[0030] Figure 7 yes Figure 6 A structural schematic diagram of the deformation of the brush body of the electric toothbrush head;

[0031] Figure 8 is a three-dimensional schematic diagram of an electric toothbrush head according to some other embodiments of the present application;

[0032] Fig. 9 yes Figure 8 Schematic diagram of the structure of the brush body deformation of the electric toothbrush head.

[0033] Description of main component symbols:

[0034] 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, brush filament group; 511, hair bundle; 513, distal brush filament group; 515, proximal brush filament group; 517, middle brush filament group; 70, deformation part; 71, first sub-part; 73, second sub-part. DETAILED DESCRIPTION

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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 one side of the brush body where the bristle-planting surface is located. When the electric toothbrush is in operation, the bristles fit the area of ​​the teeth to be cleaned. At the same time, the motor in the handle of the electric toothbrush drives the electric toothbrush head to vibrate to clean the surface and gaps of the teeth. However, when the electric toothbrush head cleans the inner teeth, the bristles at the far end of the brush body cannot 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).

[0043] 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 .

[0044] 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.

[0045] 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.

[0046] See also Figures 2 to 4 The 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 hair-planting holes 315 and extend from the hair-planting surface 311. The bristles 50 include at least two bristle groups 51, and each bristle group 51 includes at least two bristle bundles 511. In the length direction Z of the brush body 30, the height of the brush group 51 farthest from the rod body 10 is higher than the height of any other brush group 51.

[0047] 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 .

[0048] 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.

[0049] The implanted hair part 31 is a structure for installing the bristles 50, and the bristles 50 are arranged on the implanted hair surface 311 of the implanted hair part 31. The implanted hair hole 315 is used for the hair bundle 511 to be installed therein, and a hair bundle 511 is installed in each implanted hair hole 315. One end of the hair bundle 511 is installed in the implanted hair hole 315, and the other end (free end) extends from the implanted hair surface 311 so as to contact the surface to be cleaned of the teeth during the cleaning process. When the area of ​​the implanted hair hole 315 is constant, the number of the implanted hair holes 315 can be but is not limited to one, two, three, four or more. When the number of the implanted hair holes 315 is multiple, multiple hair bundles 511 can be installed in multiple implanted hair 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 511 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 511. In the case where the hair implanting hole 315 is a through hole, when the hair bundle 511 is installed in the hair implanting hole 315, the hair bundle 511 can be fixed on the back surface 313 of the hair implanting part 31 by gluing or fusion.

[0050] The bristles 50 are structures for cleaning and / or caring for the parts to be cleaned of the teeth. The parts to be cleaned of the teeth include, but are not limited to, the tooth surfaces, interdental spaces, and gums of the teeth. The number of brush filament groups 51 included in the bristles 50 includes, but is not limited to, two, three, four, five, or more. Preferably, the plurality of brush filament groups 51 can be spaced apart from each other so that during the operation of the brush head 100, the interference between the plurality of brush filament groups 51 is small. Moreover, in the case where the implanted hair portion 31 is bendable and deformable, the problem of mutual conflict or interference between the plurality of brush filament groups 51 can also be avoided. In one embodiment, the plurality of brush filament groups 51 can be spaced apart along the length direction Z of the brush body 30. At this time, during the process of brushing teeth, the plurality of brush filament groups 51 can cover a large number of teeth, which can improve the cleaning efficiency of the teeth. Moreover, the width of the brush body 30 can also be set to be narrow, which can facilitate the storage of the brush head 100. In another embodiment, a part of the multiple brush filament groups 51 are arranged at intervals along the length direction Z of the brush body 30, and another part of the multiple brush filament groups 51 are arranged at intervals along the width direction X of the brush body 30. In this case, during the process of brushing teeth, the multiple brush filament groups 51 can cover a large number of teeth, and the area of ​​teeth covered by the brush filament groups 51 in the width direction is also large. The brush filament groups 51 can clean the gums while cleaning the tooth surface of the teeth. The bristles 50 have a better cleaning effect on the oral cavity and a higher cleaning efficiency for the teeth. The multiple brush filament groups 51 of the present application are arranged at intervals along the length direction Z of the brush body 30.

[0051] The number of bristle bundles 511 in each brush filament group 51 may be, but is not limited to, two, three, four, five or more. The number of bristle bundles 511 in each brush filament group 51 may be the same or different. During the process of brushing teeth, the bristle bundles 511 directly contact the teeth and / or gums, and the bristle bundles 511 transmit vibration force to the teeth and / or gums to remove dental plaque from the tooth surface, tooth gaps and gums. Each bristle bundle 511 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 511 can contact the tooth surface of the teeth and can extend into the tooth gap for cleaning. When the material of the bristle is a flexible material such as silicone, the free end of the bristle bundle 511 can contact the tooth surface of the tooth to perform polishing-like care on the tooth surface. In addition, the free end of the bristle bundle 511 can also be used to clean the gums or the inner wall of the mouth, which are easily damaged. The brush head 100 has a good cleaning effect and will not cause damage to the user's mouth.

[0052] See also Figure 3, the height of the brush filament group 51 farthest from the rod body 10 is higher than the height of any other brush filament group 51 means: the average height H1 of the brush filament group 51 farthest from the rod body 10 is higher than the average height H2 of any other brush filament group 51, that is, H1>H2. Exemplarily, when the bristles 50 include two brush filament groups 51, when the brush filament group 51 farthest from the rod body 10 includes four hair bundles 511, the heights of the four hair bundles 511 are h1, h2, h3 and h4 respectively, then the average height H1 of the brush filament group 51 farthest from the rod body 10 = (h1+h2+h3+h4) / 4. When the brush filament group 51 close to the rod body 10 includes 5 bristle bundles 511, the heights of the 5 bristle bundles 511 are h5, h6, h7, h8 and h9 respectively. Then, the average height H2 of the brush filament group 51 close to the rod body 10 is (h5+h6+h7+h8+h9) / 5, and H1 and H2 satisfy: H1>H2.

[0053] The upper and lower rows of teeth in a person's oral cavity are arranged in an arc shape, and the closer the teeth are to the inside of the oral cavity, the greater the arc of the arrangement. The top of the hair bundle 511 in the bristles 50 of the ordinary brush head 100 is a plane. When the brush head 100 is inserted into the teeth close to the inside, the hair bundle 511 in the bristles 50 cannot all fit with the teeth, and the cleaning effect of the bristles 50 on the teeth is poor. In the present application, when the average height of the brush wire group 51 farthest from the rod body 10 is higher than the height of any other brush wire group 51, when the brush head 100 is inserted into the teeth close to the inside, when any brush wire group 51 close to the rod body 10 fits with the teeth, the hair bundle 511 in the brush wire group 51 farthest from the rod body 10 is longer, and the hair bundle 511 in the brush wire group 51 farthest from the rod body 10 can also fit with the teeth, so that multiple brush wire groups 51 can form a good fit with the teeth, and the bristles 50 have a better cleaning effect on the teeth and a higher cleaning efficiency for the teeth.

[0054] In the case where the bristles 50 include two brush filament groups 51, the average height of the brush filament group 51 farthest from the rod body 10 is higher than the average height of the brush filament group 51 close to the rod body 10. In the case where the bristles 50 include three brush filament groups 51, the average height of the brush filament group 51 farthest from the rod body 10 is higher than the average height of any one of the other two brush filament groups 51. In the case where the bristles 50 include four brush filament groups 51, the average height of the brush filament group 51 farthest from the rod body 10 is higher than the average height of any one of the other three brush filament groups 51. Preferably, the average height of the brush filament group 51 farthest from the rod body 10 may be higher than the heights of all other brush filament groups 51. In this case, the average height of the brush filament group 51 farthest from the rod body 10 is higher. During the process of brushing teeth, when any of the brush filament groups 51 except the brush filament group 51 farthest from the rod body 10 is in contact with the teeth, the brush filament group 51 farthest from the rod body 10 can also be in contact with the teeth, so that the bristles 50 have a better cleaning effect on the teeth.

[0055] In the electric toothbrush head 100 of the embodiment of the present application, in the length direction Z of the brush body 30, the height of the brush filament group 51 farthest from the rod body 10 is higher than the height of any other brush filament group 51. During the process of brushing teeth, when the electric toothbrush head 100 cleans the inner teeth, if any brush filament group 51 close to the rod body 10 fits with the teeth, the brush filament group 51 farthest from the rod body 10 can also fit with the teeth because the height of the brush filament group 51 farthest from the rod body 10 is higher, so that the bristles 50 as a whole can form a good fit with the teeth, and the electric toothbrush head 100 has a better cleaning effect on the teeth.

[0056] The electric toothbrush head 100 is further described below with reference to the accompanying drawings.

[0057] See also Figures 2 to 4 In some embodiments, in the length direction Z of the brush body 30, the brush filament group 51 includes a distal brush filament group 513 farthest from the rod body 10, and the height of the distal brush filament group 513 is higher than the height of any other brush filament group 51; among the bristle bundles 511 of the distal brush filament group 513, the height of the bristle bundles 511 far from the rod body 10 is higher than the height of the bristle bundles 511 close to the rod body 10.

[0058] The average height of the distal brush filament group 513 is higher than the average height of any other brush filament group 51, that is, the average height of all bristle bundles 511 in the distal brush filament group 513 is higher than the height of all bristle bundles 511 in any other brush filament group 51. Preferably, the average height of the distal brush filament group 513 can be higher than the heights of all other brush filament groups 51. At this time, when the user cleans the teeth inside the oral cavity, when any brush filament group 51 other than the distal brush filament group 513 fits with the teeth, the distal brush filament group 513 can also fit with the teeth, so that the bristles 50 can form a good fit with the teeth, the bristles 50 have a better cleaning effect on the teeth, and the bristles 50 have a higher cleaning efficiency on the teeth.

[0059] In the case where the height of the hair bundles 511 far from the rod body 10 in the distal brush filament group 513 is higher than the height of the hair bundles 511 close to the rod body 10, the tops of the multiple hair bundles 511 in the distal brush filament group 513 can form a certain arc surface, the lowest point of the arc surface is the position of the hair bundle 511 closest to the rod body 10 in the distal brush filament group 513, and the highest point of the arc surface can be the position of the hair bundle 511 farthest from the rod body 10 in the distal brush filament group 513. In this way, the arc surface formed by the distal brush filament group 513 can form a shape that fits the teeth. In the case of cleaning the inner teeth, the hair bundles 511 in the distal brush filament group 513 can all fit the teeth, that is, when the hair bundles 511 close to the rod body 10 in the distal brush filament group 513 fit the teeth, the hair bundles 511 far from the rod body 10 in the distal brush filament group 513 can also fit the teeth. In this way, when cleaning the inner teeth, the distal brush wire group 513 can form a good fit with the teeth, the distal brush wire group 513 has a better cleaning effect on the teeth, and the bristles 50 have a better cleaning effect on the teeth.

[0060] See also Figures 2 to 4 Furthermore, in the length direction Z of the brush body 30 , the brush filament group 51 also includes a proximal brush filament group 515 closest to the rod body 10 , and among the hair bundles 511 of the proximal brush filament group 515 , the height of the hair bundles 511 close to the rod body 10 is higher than the height of the hair bundles 511 away from the rod body 10 .

[0061] When the brush filament group 51 includes the proximal brush filament group 515 and the distal brush filament group 513, the average height of the distal brush filament group 513 is higher than the average height of the proximal brush filament group 515, that is, the average height of all the bristle bundles 511 in the distal brush filament group 513 is higher than the height of all the bristle bundles 511 in the proximal brush filament group 515. When cleaning the inner teeth, when the proximal brush filament group 515 fits the teeth, the distal brush filament group 513 can also fit the teeth well, so that the bristles 50 have a better cleaning effect on the teeth.

[0062] Since the curvature of the teeth closer to the inside of the mouth is greater, if the heights of the multiple hair bundles 511 in the proximal brush filament group 515 are the same, the top surface formed by the hair bundles 511 in the proximal brush filament group 515 is a plane. In the case of cleaning teeth close to the inside, the hair bundles 511 in the proximal brush filament group 515 may not all contact the teeth, and the cleaning effect of the proximal brush filament group 515 on the teeth will be poor. In the present application, in the hair bundles 511 of the proximal brush filament group 515, when the height of the hair bundles 511 close to the rod body 10 is higher than the height of the hair bundles 511 far away from the rod body 10, the tops of the multiple hair bundles 511 of the proximal brush filament group 515 can form a certain arc surface, the position of the lowest point of the arc surface is the position of the hair bundle 511 farthest from the rod body 10 in the proximal brush filament group 515, and the position of the highest point of the arc surface can be the position of the hair bundle 511 closest to the rod body 10 in the proximal brush filament group 515. In this way, the arc surface formed by the proximal brush filament group 515 can form a shape that fits the teeth. When cleaning the teeth close to the inside, the hair bundles 511 in the proximal brush filament group 515 can all fit the teeth, that is, when the hair bundles 511 in the proximal brush filament group 515 far from the rod body 10 fit the teeth, the hair bundles 511 in the proximal brush filament group 515 close to the rod body 10 can also fit the teeth. In this way, when cleaning the teeth close to the inside, the proximal brush filament group 515 can form a good fit with the teeth, the proximal brush filament group 515 has a better cleaning effect on the teeth, and the bristles 50 have a better cleaning effect on the teeth.

[0063] See also Figures 2 to 4 In some embodiments, in the length direction Z of the brush body 30, the brush filament group 51 includes a distal brush filament group 513 away from the rod body 10, a proximal brush filament group 515 close to the rod body 10, and an intermediate brush filament group 517 located between the distal brush filament group 513 and the proximal brush filament group 515. The height of the distal brush filament group 513 is higher than the height of the proximal brush filament group 515, and higher than the height of the intermediate brush filament group 517; in the hair bundles 511 of the intermediate brush filament group 517, the heights of each hair bundle 511 are different.

[0064] When there are three brush groups 51, the number of the middle brush groups 517 is one. When there are four brush groups 51, the number of the middle brush groups 517 is two. When there are five brush groups 51, the number of the middle brush groups 517 is three. The brush groups 51 of the present application include three, and the distal brush group 513, the proximal brush group 515 and the middle brush group 517 are all one.

[0065] The average height of the distal brush filament group 513 is higher than the average height of the proximal brush filament group 515, and higher than the average height of the middle brush filament group 517, that is, the average height of all the bristle bundles 511 in the distal brush filament group 513 is higher than the average height of all the bristle bundles 511 in the proximal brush filament group 515, and higher than the average height of all the bristle bundles 511 in the middle brush filament group 517. At this time, when cleaning the inner teeth, when the proximal brush filament group 515 is in contact with the teeth, it can ensure that the distal brush filament group 513 is also in contact with the teeth, so that the bristles 50 can form a good contact with the teeth, and the bristles 50 have a better cleaning effect on the teeth. When the middle brush filament group 517 is in contact with the teeth, it can also ensure that the distal brush filament group 513 is also in contact with the teeth, so that the bristles 50 can form a good contact with the teeth, and the bristles 50 have a better cleaning effect on the teeth. When the proximal brush filament group 515 and the middle brush filament group 517 are both in contact with the teeth, the distal brush filament group 513 is also in contact with the teeth, so that the bristles 50 and the teeth can form a good contact, and the bristles 50 have a better cleaning effect on the teeth.

[0066] In the tufts 511 of the middle brush filament group 517, the heights of the tufts 511 are all different. Exemplarily, when the middle brush filament group 517 includes eight tufts 511, the heights of the eight tufts 511 are different. The heights of the eight tufts 511 are L1, L2, L3, L4, L5, L6, L7 and L8, respectively, and L1, L2, L3, L4, L5, L6, L7 and L8 satisfy: L1≠L2≠L3≠L4≠L5≠L6≠L7≠L8.

[0067] When the heights of the bristles 511 of the middle brush filament group 517 are different, on the one hand, since the flatness of each person's teeth is different, when the heights of the bristles 511 of the middle brush filament group 517 are different, the middle brush filament group 517 can adapt to teeth of various flatnesses, and the bristles 511 in the middle brush filament group 517 can all fit the teeth, and the middle brush filament group 517 has a good cleaning effect on teeth of different flatnesses. On the other hand. During the process of brushing teeth, the middle brush filament group 517 can form a pulse-like effect. Specifically, during the vibration of the brush head 100, the bristles 511 of different heights will produce different vibration amplitudes and frequencies. Shorter bristles 511 may produce a faster vibration frequency, while longer bristles 511 may produce a larger vibration amplitude. In this way, the middle brush filament group 517 can form a pulse-like effect. On the one hand, the pulse effect can help to clean the gaps between teeth and tooth surfaces more deeply. Due to the difference in vibrations generated by the bristles 511 at different heights, the bristles 50 can more effectively remove dental plaque and food residues. On the other hand, the pulse effect can also promote the flow of liquid in the oral cavity, thereby helping the toothpaste and water flow to mix better, forming more tiny bubbles, and further enhancing the cleaning effect. In addition, the pulse effect also helps to improve the comfort of brushing teeth. Due to the existence of the pulse effect, the bristles 50 can produce a certain massage effect when contacting the teeth and gums, which helps to relax the gum tissue and reduce the irritation to the gums when brushing teeth.

[0068] See also Figures 2 to 4 In some embodiments, the height of the middle brush filament group 517 is lower than that of the proximal brush filament group 515, that is, the average height of the middle brush filament group 517 is lower than that of the proximal brush filament group 515. When the average height of the middle brush filament group 517 is lower than that of the proximal brush filament group 515, the top of the hair bundle 511 in the proximal brush filament group 515, the top of the hair bundle 511 in the middle brush filament group 517, and the top of the hair bundle 511 in the distal brush filament group 513 can jointly form an arc surface with an opening facing away from the brush body 30. The lowest position of the arc surface is located at the position of the middle brush filament group 517, and the highest position of the arc surface is located at the position of the distal brush filament group 513, and the arc surface can match the curvature of the teeth. When cleaning the inner teeth, when the middle brush wire group 517 is in contact with the teeth, both the proximal brush wire group 515 and the distal brush wire group 513 can be in contact with the teeth, the bristles 50 can form a good contact with the teeth, and the bristles 50 have a better cleaning effect on the teeth.

[0069] See also Figures 2 to 4In some embodiments, the angle between any bristle bundle 511 in the distal brush filament group 513 passing through the mid-width plane of the brush body 30 and the thickness direction Y of the brush body 30 is greater than the angle between any bristle bundle 511 in the middle brush filament group 517 passing through the mid-width plane of the brush body 30 and the thickness direction Y of the brush body 30. At this time, 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, the gaps between the multiple bristle bundles 511 in the distal brush filament group 513 passing through the mid-width plane of the brush body 30 are larger, so that the bristle bundles 511 of the distal brush filament group 513 have a greater degree of freedom during the vibration process, and the bristle bundles 511 of the distal brush filament group 513 can clean a larger area of ​​the teeth, so that the bristles 50 have a better cleaning effect on the teeth.

[0070] The angle between any bristle bundle 511 passing through the mid-width plane of the brush body 30 in the proximal brush filament group 515 and the thickness direction Y of the brush body 30 is greater than the angle between any bristle bundle 511 passing through the mid-width plane of the brush body 30 in the middle brush filament group 517 and the thickness direction Y of the brush body 30. At this time, 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, the gaps between the multiple bristle bundles 511 passing through the mid-width plane of the brush body 30 in the proximal brush filament group 515 are larger, so that the bristle bundles 511 of the proximal brush filament group 515 have a greater degree of freedom during the vibration process, and the bristle bundles 511 of the proximal brush filament group 515 can clean a larger area of ​​the teeth, so that the bristles 50 have a better cleaning effect on the teeth.

[0071] See also Figures 2 to 4 In some embodiments, in the length direction Z of the brush body 30, the density of the bristle bundles 511 in the distal brush filament group 513 is greater than the density of the bristle bundles 511 in the proximal brush filament group 515. In the process of brushing teeth, the closer the teeth are to the inside, the harder it is for the brush head 100 to reach them. Therefore, the cleaning effect of the brush head 100 on the inner teeth is usually not as good as that on the outer teeth. The density of the bristle bundles 511 in the distal brush filament group 513 of the present application is greater than the density of the bristle bundles 511 in the proximal brush filament group 515. When cleaning the inner teeth, after the bristle bundles 511 in the distal brush filament group 513 fit the teeth, due to the greater density of the bristle bundles 511 in the distal brush filament group 513, the contact area between the bristle bundles 511 in the distal brush filament group 513 and the teeth is larger. The bristle bundles 511 in the distal brush filament group 513 can more deeply clean the tooth gaps and tooth surfaces of the inner teeth and effectively remove dental plaque. Furthermore, when the brush head 100 vibrates, the high-density distal brush filament group 513 can distribute the cleaning force to the entire tooth surface more quickly, thereby improving the cleaning effect on the inner teeth.

[0072] See also Figure 5 and Figure 6In some embodiments, there is one implanted hair portion 31, and the bristles 50 include at least two brush filament groups 51, and at least two brush filament groups 51 are both located on the implanted hair portion 31. When the bristles 50 and / or the implanted hair portion 31 are subjected to force, the brush body 30 is deformed as a whole.

[0073] 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 51 (proximal brush filament group 515 and distal brush filament group 513) on one implanted hair part 31, the pressure exerted on the two brush filament groups 51 is also uniform. When there are three brush filament groups 51 (proximal brush filament group 515, middle brush filament group 517 and distal brush filament group 513) on one implanted hair part 31, the pressure exerted on the individual brush filament groups 51 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. When cleaning the inner teeth, when the brush body 30 is deformed by the pressure of the oral cavity, the distal brush wire group 513 can be further fitted to the teeth, and the distal brush wire group 513 has a better cleaning effect on the inner teeth.

[0074] See also Figure 5 and Figure 6 In other embodiments, the implanted hair portion 31 is one, the bristles 50 include at least two brush filament groups 51, and the at least two brush filament groups 51 are both located on the implanted hair portion 31. The implanted hair portion 31 includes multiple areas, each area is provided with a brush filament group 51, and 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.

[0075] Specifically, the number of brush filament groups 51 may include, but is not limited to, one, two, three, four or more. The number of regions on the implanted hair 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 51. The following description takes one region as an example in which one brush filament group 51 is provided. The deformation of the region of the implanted hair portion 31 may drive the deformation of the corresponding brush filament group 51.

[0076] See also Figures 5 to 7When there are two brush filament groups 51 (proximal brush filament group 515 and distal brush filament group 513) on a hair implantation portion 31, when the bristles 50 and / or the hair implantation portion 31 are subjected to force, the proximal brush filament group 515 may be deformed, the distal brush filament group 513 may be deformed, or the proximal brush filament group 515 and the distal brush filament group 513 may be deformed at the same time. The deformation amplitudes of the deformed brush filament groups 51 may be consistent or inconsistent. This embodiment only shows the case where the distal brush filament group 513 is deformed while the proximal brush filament group 515 is not deformed ( Figure 7 As shown in FIG. 1 ). It can be understood that, in the length direction Z of the rod body 10, the distal brush wire group 513 moves from the end away from the rod body 10 to the direction close to the rod body 10, while the proximal brush wire group 515 does not deform. When the distal brush wire group 513 is deformed, the distal brush wire group 513 can further fit the teeth, and the distal brush wire group 513 has a better cleaning effect on the inner teeth.

[0077] See also Figure 5 , Figure 8 and Fig. 9 When there are three brush filament groups 51 (proximal brush filament group 515, middle brush filament group 517 and distal brush filament group 513) on a implanted hair portion 31, when the bristles 50 and / or the implanted hair portion 31 are subjected to force, the proximal brush filament group 515 may be deformed, the distal brush filament group 513 may be deformed, the middle brush filament group 517 may be deformed, or the three brush filament groups 51 may be deformed in pairs at the same time (such as the middle brush filament group 517 and the distal brush filament group 513), or the proximal brush filament group 515, the middle brush filament group 517 and the distal brush filament group 513 may all be deformed. The deformation amplitudes of the deformed brush filament groups 51 may be consistent or inconsistent. This application only shows the case where the middle brush filament group 517 and the distal brush filament group 513 are deformed, while the proximal brush filament group 515 is not deformed ( Fig. 9 As shown). 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 515 does not deform, the middle brush filament group 517 deforms from the end close to the rod body 10 to the end away from the rod body 10, and the distal brush filament group 513 deforms from the end close to the rod body 10 to the end away from the rod body 10. When the middle brush filament group 517 is deformed, the middle brush filament group 517 can further fit the teeth, and the middle brush filament group 517 has a better cleaning effect on the teeth. When the distal brush filament group 513 is deformed, the distal brush filament group 513 can further fit the teeth, and the distal brush filament group 513 has a better cleaning effect on the inner teeth.

[0078] 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 511 on the brush filament group 51 can fit the tooth surfaces with different contours, ensuring the transmission of vibration energy of the brush head 100, thereby enhancing the cleaning effect.

[0079] See also Figure 6 and Figure 8 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] In another embodiment, the brush body 30 includes three hair implanting parts 31, which are a first hair implanting part 316 connected to the rod body 10, a second hair implanting part 317 farthest from the rod body 10 in the length direction Z of the rod body 10, and a third hair implanting part 319 located between the first hair implanting part 316 and the second hair implanting part 317. Among them, the area of ​​the hair implanting surface 311 of the third hair implanting part 319 is larger than the area of ​​the hair implanting surface 311 of the first hair implanting part 316, and the area of ​​the hair implanting surface 311 of the third hair implanting part 319 is larger than the area of ​​the hair implanting surface 311 of the second hair implanting part 317.

[0086] 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-planting parts 31.

[0087] See also Figures 6 to 9 In 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.

[0088] See also Figures 6 to 9 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.

[0089] 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.

[0090] See also Figures 6 to 9 In 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.

[0091] See also Figures 6 to 9In 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.

[0092] See also Figures 6 to 9 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.

[0093] See also Figures 6 to 9 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.

[0094] See also Figures 6 to 9In 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.

[0095] See also Figures 6 to 9 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.

[0096] See also Figure 4 , Figure 5 , Figure 6 and Figure 8 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 implanted hair portion 31 of the brush body 30, the connecting portion 33 of the brush body 30, 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 implanted hair portion 31, all surfaces of the connecting portion 33, and all outer surfaces of the rod body 10, and fills the gaps between adjacent implanted hair portions 31.

[0097] The deformable portion 70 can be a soft glue or other elastic materials. The deformable portion 70 can produce elastic deformation to prevent the hair-planting portion 31 from colliding with the oral cavity and teeth. The two opposite sides of the connecting portion 33 along the thickness direction Y of the brush head 100 will face the gap between the hair-planting portions 31. The deformable portion 70 used for protection and filling can fill the gap between the hair-planting portions 31 and wrap the opposite sides of the connecting portion 33 to protect the connecting portion 33 and prevent the connecting portion 33 from breaking. The deformable portion 70 wrapped on the outside of the rod body 10 can provide a shock-absorbing effect for the rod body 10 to prevent the rod body 10 from breaking when the brush head 100 falls. In addition, the deformable portion 70 is a soft glue structure, and the deformable portion 70 can fill the gap between the hair-planting portions 31 and cover the hair-planting portions 31 and the surrounding side surfaces. Therefore, the deformable portion 70 is not easy to fall off from the hair-planting portion 31, and there is no obvious boundary between the deformable portion 70 and the hair-planting portion 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.

[0098] See also Figure 4 , Figure 5 , Figure 6 and Figure 8 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.

[0099] 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 511 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 is prevented that the surface of the brush head 100 on the side where the back side 313 is located is uneven, 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.

[0100] 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.

[0101] 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 are arranged in the hair-implanting holes and extend from the hair-implanting surface, the bristles include at least two brush filament groups, each of the brush filament groups includes at least two bristle bundles, and in the length direction of the brush body, the height of the brush filament group farthest from the rod body is higher than the height of any other brush filament group except the brush filament group farthest from the rod body; in the length direction of the brush body, the brush filament group includes a distal brush filament group farthest from the rod body, the height of the distal brush filament group is higher than the height of any other brush filament group except the distal brush filament group, and among the bristle bundles of the distal brush filament group, the height of the bristle bundle farthest from the rod body is higher than the height of the bristle bundle close to the rod body.

2. The electric toothbrush head according to claim 1, characterized in that: In the length direction of the brush body, the brush filament group further includes a proximal brush filament group closest to the rod body, and among the hair bundles of the proximal brush filament group, the height of the hair bundles close to the rod body is higher than the height of the hair bundles far from the rod body.

3. The electric toothbrush head according to claim 1, characterized in that: In the length direction of the brush body, the brush filament group also includes a proximal brush filament group close to the rod body and a middle brush filament group located between the distal brush filament group and the proximal brush filament group, the height of the distal brush filament group is higher than the height of the proximal brush filament group, and higher than the height of the middle brush filament group; in the hair bundles of the middle brush filament group, the heights of each hair bundle are different.

4. The electric toothbrush head according to claim 3, characterized in that: The height of the middle brush filament group is lower than the height of the proximal brush filament group.

5. The electric toothbrush head according to claim 3, characterized in that: The angle between any bristle bundle in the distal brush filament group passing through the mid-width plane of the brush body and the thickness direction of the brush body is greater than the angle between any bristle bundle in the middle brush filament group passing through the mid-width plane of the brush body and the thickness direction of the brush body; the angle between any bristle bundle in the proximal brush filament group passing through the mid-width plane of the brush body and the thickness direction of the brush body is greater than the angle between any bristle bundle in the middle brush filament group passing through the mid-width plane of the brush body and the thickness direction of the brush body.

6. The electric toothbrush head according to claim 1, characterized in that: In the length direction of the brush body, the brush filament group further includes a proximal brush filament group close to the rod body; the density of the hair bundles in the distal brush filament group is greater than the density of the hair bundles in the proximal brush filament group.

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 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 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 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 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 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 lower than the hair-implanting surface or 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. An electric toothbrush, characterized in that: include: The electric toothbrush head according to any one of claims 1 to 15, and A brush handle, wherein the electric toothbrush head is mounted on the brush handle.

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