Toothbrush head and toothbrush

Abstract

The utility model provides a toothbrush head and a toothbrush, the toothbrush head comprises a carrier, a first brush wire cluster group, a second brush wire cluster group and a third brush wire cluster group, the first brush wire cluster group, the second brush wire cluster group and the third brush wire cluster group are mounted on the carrier, and the length of the first brush wire cluster group is larger than or equal to that of the third brush wire cluster group; the elastic modulus of the second brush wire cluster group is greater than that of the first brush wire cluster group and that of the third brush wire cluster group; the first brush wire cluster group comprises a first middle brush wire cluster, the second brush wire cluster group comprises a second middle brush wire cluster, the first middle brush wire cluster is arranged on the periphery of the second middle brush wire cluster in a surrounding manner, or a plurality of clusters of brush wires contained in the first middle brush wire cluster and a plurality of clusters of brush wires contained in the second middle brush wire cluster are arranged in a staggered manner; the third brush wire cluster group comprises two groups of side brush wire clusters, and the first middle brush wire cluster and the second middle brush wire cluster are positioned between the two groups of side brush wire clusters. The toothbrush head and the toothbrush can meet different cleaning requirements of teeth, adjacent surfaces of the teeth and gingiva.

Description

Technical Field

[0001] The present invention relates to the technical field of toothbrushes, and in particular to a toothbrush head and a toothbrush. Background Art

[0002] The toothbrush head is equipped with a large number of bristles, which come into contact with and rub against the tooth surface during movement to clean the teeth.

[0003] Currently, the filaments on a toothbrush head are generally of the same length and evenly distributed.

[0004] However, this toothbrush head cannot simultaneously meet the different cleaning needs of teeth, tooth adjacent surfaces and gums. Utility Model Content

[0005] In view of this, the present disclosure provides a toothbrush head and a toothbrush, which can meet the different cleaning needs of teeth, tooth adjacent surfaces and gums.

[0006] Specifically, the following technical solutions are included:

[0007] In a first aspect, an embodiment of the present disclosure provides a toothbrush head, comprising a carrier and a first brush filament cluster group, a second brush filament cluster group and a third brush filament cluster group mounted on the carrier, wherein the length of the first brush filament cluster group is greater than or equal to the third brush filament cluster group, and the elastic modulus of the second brush filament cluster group is greater than the elastic modulus of the first brush filament cluster group and the elastic modulus of the third brush filament cluster group;

[0008] The first brush filament cluster group includes a first middle brush filament cluster, and the second brush filament cluster group includes a second middle brush filament cluster, wherein the first middle brush filament cluster is arranged around the periphery of the second middle brush filament cluster, or the multiple brush filament clusters included in the first middle brush filament cluster are arranged alternately with the multiple brush filament clusters included in the second middle brush filament cluster;

[0009] The third brush filament cluster group includes two groups of side brush filament clusters, and the first middle brush filament cluster and the second middle brush filament cluster are located between the two groups of side brush filament clusters.

[0010] Optionally, the first brush filament cluster group further includes an end brush filament cluster, and the end brush filament cluster is located at at least one end of the carrier in the axial direction;

[0011] The second brush filament cluster group also includes two supplementary brush filament clusters, and the two supplementary brush filament clusters are located between the two groups of side brush filament clusters and are respectively located on both sides of the central axis of the carrier.

[0012] Optionally, centers of the end brush filament clusters, the first middle brush filament cluster, and the second middle brush filament cluster are all located on the central axis of the carrier.

[0013] Optionally, the second middle brush filament cluster is mounted on the carrier through the first filament planting pores on the carrier, and the cross-sectional shape of the first filament planting pores includes a circle or a polygon;

[0014] The first middle brush filament cluster is mounted on the carrier through the second filament planting pores,

[0015] The first middle brush filament cluster is arranged around the second middle brush filament cluster, the second filament planting pores are circular rings surrounding the first filament planting pores, or, the first middle brush filament cluster is composed of multiple clusters of brush filaments surrounding the second middle brush filament cluster, the second filament planting pores are multiple and surround the first filament planting pores, and each cluster of brush filaments of the first middle brush filament cluster is mounted on the carrier through one of the second filament planting pores, or,

[0016] The multiple clusters of brush filaments included in the first middle brush filament cluster and the multiple clusters of brush filaments included in the second middle brush filament cluster are arranged in an interleaved manner, and the cross-sectional shape of the second filament planting pores includes a circle, a strip or a polygon.

[0017] Optionally, the first middle brush filament cluster is arranged around the second middle brush filament cluster, the cross-section of the first filament planting pores is a polygon, the second filament planting pores are multiple and surround the first filament planting pores, the difference between the number of the second filament planting pores and the number of sides of the first filament planting pores is less than a first threshold value, and the multiple second filament planting pores are rotationally symmetric with the second middle brush filament cluster as the center.

[0018] Optionally, the first threshold value is 1, the cross-section of each second filament planting pore is a strip, and the extending direction of each second filament planting pore is parallel to one side of the first filament planting pore.

[0019] Optionally, the size of the first filament planting pores is between 2 and 3 mm,

[0020] The second filament planting pores are multiple and surround the first filament planting pores, and the size of the second filament planting pores is between 1 and 2 mm.

[0021] Optionally, the lengths of the brush filaments in the first brush filament cluster group and the second brush filament cluster group gradually become shorter and then gradually become longer in the axial direction of the carrier to form a first arc surface, the lengths of the brush filaments in the third brush filament cluster group gradually become shorter and then gradually become longer in the axial direction of the carrier to form a second arc surface, and the maximum height difference between the first arc surface and the second arc surface is greater than or equal to 1 mm.

[0022] Optionally, the length range of the brush filaments in the first brush filament cluster group is between 8 and 15 mm, the length range of the brush filaments in the second brush filament cluster group is between 5 and 9 mm, and the length range of the brush filaments in the third brush filament cluster group is between 5 and 7 mm.

[0023] Optionally, the swing angle of the bristles in the first bristle cluster group relative to the normal of the hair implantation plane of the carrier is in the range of 5-20°;

[0024] The swing angle of the bristles in the second bristle cluster group relative to the normal of the hair implantation plane of the carrier is in the range of 2-5°;

[0025] The swing angle of the bristles in the third bristle cluster group relative to the normal of the hair implantation plane of the carrier is in the range of 0-2°.

[0026] Optionally, the end bristle cluster is mounted on the carrier through a third hair implantation hole, and the cross-sectional shape of the third hair implantation hole includes a circle or a polygon;

[0027] The supplementary bristle cluster is mounted on the carrier through a fourth hair implantation hole, and the cross-sectional shape of the fourth hair implantation hole includes a strip shape;

[0028] The side bristle cluster includes multiple clusters of bristles, and each cluster of bristles is mounted on the carrier through a fifth hair implantation hole, and the cross-sectional shape of the fifth hair implantation hole includes a strip shape.

[0029] Optionally, the size of the third hair implantation hole is between 2-3 mm;

[0030] The width of the fifth hair implantation hole is between 0.8-1.5 mm;

[0031] The width of the fourth hair implantation hole is between 0.8-1.5 mm.

[0032] Optionally, the cross-section of the bristles in the first bristle cluster group and the third bristle cluster group is triangular or circular, and the cross-section of the bristles in the second bristle cluster group is rhombic.

[0033] Optionally, one of the second middle bristle clusters and the first middle bristle clusters surrounding the second middle bristle cluster form a toothbrushing site, and the number of toothbrushing sites included in the toothbrush head is 1, 2, 3, 4 or 5.

[0034] Optionally, the number of toothbrushing sites included in the toothbrush head is two, and the proportion of the two toothbrushing sites in all the bristles on the toothbrush head is between 40%-60%.

[0035] In a second aspect, an embodiment of the present disclosure provides a toothbrush having a motor and any one of the toothbrush heads described above, and the motor drives the toothbrush head to vibrate when working.

[0036] Embodiments of the present disclosure provide a toothbrush head and a toothbrush. The toothbrush head has multiple groups of bristle clusters. The length of the first bristle cluster group is higher than that of other clusters. Thus, under the drive of the motor, it can swing significantly, removing various stains on the tooth surface and being suitable for deeply cleaning concave positions such as the gum line. The elastic modulus of the second bristle cluster group is higher than that of other clusters and is located in the middle of the carrier. It can contact the tooth surface during toothbrushing and friction with the tooth surface to achieve an obvious friction whitening effect. The third bristle cluster group includes two side bristle clusters, which are arranged on both sides of the first middle bristle cluster and the second middle bristle cluster and have a shorter length. When the user brushes teeth at an inclined angle (such as 45 degrees), the side bristle clusters can apply less pressure on the gums, achieving a gum protection effect. In addition, the first middle bristle cluster of the first bristle cluster group is arranged around the periphery of the second middle bristle cluster, or the first middle bristle cluster and the second middle bristle cluster are arranged in an interleaved manner, enabling the bristles at the middle position of the carrier to have both an efficient cleaning effect and a friction whitening effect, realizing the coordination of the two effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0038] Figure 1 Structural schematic diagram of a toothbrush head provided by an embodiment of the present disclosure;

[0039] Figure 2 Structural schematic diagram of another toothbrush head provided by an embodiment of the present disclosure;

[0040] Figure 3 For Figure 1 Partial structural schematic diagram of the shown toothbrush head;

[0041] Figure 4 Shape schematic diagram of the implanting pores on a toothbrush head provided by an embodiment of the present disclosure;

[0042] Figure 5 Shape schematic diagram of the implanting pores on another toothbrush head provided by an embodiment of the present disclosure;

[0043] Figure 6 Side view of a toothbrush head provided by an embodiment of the present disclosure;

[0044] Figure 7 Partial exploded schematic diagram of a toothbrush head provided by an embodiment of the present disclosure;

[0045] Figure 8 Partial structural schematic diagram of a toothbrush provided by an embodiment of the present disclosure;

[0046] Figure 9 Schematic diagram of the relative swing angle of the brush filaments provided by an embodiment of the present disclosure;

[0047] Figure 10 Schematic diagram of the movement consistency of the brush filaments provided by an embodiment of the present disclosure;

[0048] Figure 11 Schematic diagram of the relative swing amplitude of the brush filaments provided by an embodiment of the present disclosure;

[0049] Figure 12 Schematic diagram of the state of the toothbrush head during brushing provided by an embodiment of the present disclosure.

[0050] The reference numerals in the figure respectively represent:

[0051] 0 - toothbrush head;

[0052] 1 - carrier; 10 - hair implanting plane; 100 - normal line; 11 - first hair implanting hole; 12 - second hair implanting hole; 13 - third hair implanting hole; 14 - fourth hair implanting hole; 15 - fifth hair implanting hole;

[0053] 2 - first brush filament cluster group; 21 - end brush filament cluster; 22 - first middle brush filament cluster;

[0054] 3 - second brush filament cluster group; 31 - second middle brush filament cluster; 32 - supplementary brush filament cluster;

[0055] 4 - third brush filament cluster group; 41 - side brush filament cluster;

[0056] x - first arc surface; y - second arc surface; z - brushing site; g - ideal brush filament; h - actual brush filament; j - gum; k - tooth;

[0057] 5 - central back plate;

[0058] 6 - soft rubber layer;

[0059] 7 - motor.

[0060] Through the above-mentioned drawings, specific embodiments of the present disclosure have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present disclosure in any way, but to illustrate the concept of the present disclosure to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0061] Next, the technical solutions in the embodiments of the present disclosure will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present disclosure without creative efforts shall fall within the protection scope of the present disclosure.

[0062] The orientation terms involved in the embodiments of the present disclosure, such as "upper", "lower", "side", etc., generally take the relative orientation relationship between the orientations shown in the drawings or the structures when the toothbrush head or the toothbrush is placed in its habitual position as the reference. And using these orientation terms is only to more clearly describe the relationship between the structures and the structures, rather than to describe the absolute orientation. When the toothbrush head or the toothbrush is placed in different postures, the orientation may change. For example, "upper" and "lower" may be interchanged. Generally, in the embodiments of the present disclosure, "upper" and "lower" can be based on the ground, the side farther from the ground is the upper side, and the side closer to the ground is the lower side.

[0063] Unless otherwise defined, all technical terms used in the embodiments of the present disclosure have the same meaning as commonly understood by those of ordinary skill in the art.

[0064] To make the technical solutions and advantages of the present disclosure clearer, the embodiments of the present disclosure will be further described in detail below in conjunction with the accompanying drawings.

[0065] In a first aspect, an embodiment of the present disclosure provides a toothbrush head. Refer to Figure 1-2 , the toothbrush head includes a carrier 1 and a first brush filament cluster group 2, a second brush filament cluster group 3, and a third brush filament cluster group 4 mounted on the carrier 1. The length of the first brush filament cluster group 2 is greater than or equal to that of the third brush filament cluster group 4, and the elastic modulus of the second brush filament cluster group 3 is greater than the elastic moduli of the first brush filament cluster group 2 and the third brush filament cluster group 4;

[0066] The first brush filament cluster group 2 includes a first middle brush filament cluster 22, and the second brush filament cluster group 3 includes a second middle brush filament cluster 31. Among them, the first middle brush filament cluster 22 is arranged around the second middle brush filament cluster 31, or multiple clusters of brush filaments included in the first middle brush filament cluster 22 are arranged alternately with multiple clusters of brush filaments included in the second middle brush filament cluster 31;

[0067] The third brush filament cluster group 4 includes two sets of side brush filament clusters 41, and the first middle brush filament cluster 22 and the second middle brush filament cluster 31 are located between the two sets of side brush filament clusters 41.

[0068] An embodiment of the present disclosure provides a toothbrush head. The toothbrush head has multiple groups of bristle clusters. The length of the first bristle cluster group is higher than that of other cluster groups. Thus, under the drive of a motor, it can swing significantly, removing various stains on the tooth surface and being suitable for deeply cleaning concave positions such as the gum line. The elastic modulus of the second bristle cluster group is higher than that of other cluster groups, and it is located in the middle of the carrier, and can contact the tooth surface and rub against the tooth surface during the brushing process to achieve an obvious friction whitening effect. The third bristle cluster group includes two side bristle clusters, which are arranged on both sides of the first middle bristle cluster and the second middle bristle cluster, and have a shorter length, which can ensure that when the user brushes teeth at an inclined angle (such as 45 degrees), the pressure of the side bristle clusters on the gums is smaller, achieving a gum protection effect. In addition, the first middle bristle cluster of the first bristle cluster group is arranged around the periphery of the second middle bristle cluster, or the first middle bristle cluster and the second middle bristle cluster are arranged in an alternating manner, which can make the bristles in the middle position of the carrier have both an efficient cleaning effect and a friction whitening effect, realizing the synergy of the two effects.

[0069] It should be noted that the description method of "cluster group" is adopted above. Here, the "cluster group" refers to a group of bristles composed of multiple clusters of bristles with similar functions.

[0070] In some embodiments, referring to Figure 1 and Figure 2 , the first bristle cluster group 2 further includes end bristle clusters 21, and the end bristle clusters 21 are located at at least one end of the carrier 1 in the axial direction;

[0071] The second bristle cluster group 3 further includes two supplementary bristle clusters 32, and the two supplementary bristle clusters 32 are located between the two side bristle clusters 41 and are respectively located on both sides of the central axis of the carrier 1.

[0072] In this embodiment, since the end bristle clusters are located at at least one end of the carrier in the axial direction, when the toothbrush head is placed on the teeth, the end bristle clusters can easily enter the adjacent surfaces of the two teeth, and then deeply clean these adjacent surfaces. The two supplementary bristle clusters can increase the proportion of the bristles with a whitening effect on the whole toothbrush head, and then improve the overall whitening ability of the toothbrush head. The two supplementary bristle clusters are respectively located on both sides of the central axis of the carrier, which can balance the whitening ability of different parts of the toothbrush head, so that the teeth can be evenly whitened. It should be noted that the central axis of the aforementioned carrier is parallel to the axis of the whole toothbrush head.

[0073] Optionally, referring to Figure 1-2 , the centers of the end bristle clusters 21, the first middle bristle clusters 22 and the second middle bristle clusters 31 are all located on the central axis of the carrier 1.

[0074] With the above settings, it can be ensured that the cleaning and whitening functions of the toothbrush head are substantially symmetric with respect to the central axis of the carrier, and it can be ensured that the distribution of the filaments with different functions on the toothbrush head is relatively uniform, and the cleaning and whitening effects on the teeth are relatively uniform.

[0075] It should be noted that the quantities of the foregoing "first middle filament cluster", "second middle filament cluster", and "end filament cluster" can all be adjusted according to requirements. For example, there can be two end filament clusters, two second middle filament clusters, etc. Generally speaking, except for the first middle filament cluster, these "filament clusters" are all composed of a cluster of filaments gathered together and are installed on the carrier through a single filament planting pore. The first middle filament cluster can refer to the foregoing description and can include one or more clusters of filaments. When composed of multiple clusters of filaments, different clusters of filaments can be installed on the carrier through different filament planting pores respectively.

[0076] In some embodiments, in combination with Figure 1-2 and 4-5, the second middle filament cluster 31 is installed on the carrier 1 through the first filament planting pore 11 on the carrier 1, and the cross-sectional shape of the first filament planting pore 11 includes a circle or a polygon;

[0077] The first middle filament cluster 22 is installed on the carrier 1 through the second filament planting pore 12.

[0078] The first middle filament cluster 22 is arranged around the periphery of the second middle filament cluster 31, and the second filament planting pore 12 is an annular shape surrounding the first filament planting pore 11, or the first middle filament cluster 22 is composed of multiple clusters of filaments surrounding the second middle filament cluster 31, and the second filament planting pores 12 are multiple and surround the first filament planting pore 11, and each cluster of filaments of the first middle filament cluster 22 is installed on the carrier 1 through a second filament planting pore 12, or

[0079] The multiple clusters of filaments included in the first middle filament cluster 22 and the multiple clusters of filaments included in the second middle filament cluster 31 are arranged alternately, and the cross-sectional shape of the second filament planting pore 12 includes a circle, a strip, or a polygon.

[0080] In this embodiment, different brush filament clusters can be mounted on the carrier by means of implanting pores with different cross-sectional shapes. For different matching methods between the first middle brush filament cluster and the second middle brush filament cluster, the shapes and numbers of the second implanting pores corresponding to the first middle brush filament cluster are different. When the first middle brush filament cluster and the second middle brush filament cluster are in a surrounding matching manner, the second implanting pore can be directly formed into an annular shape surrounding the first implanting pore. In this way, the first middle brush filament cluster can swing significantly along the annular implanting pore, and in cooperation with the user's action of making the toothbrush head perform a circular motion, the first middle brush filament cluster can achieve rotary cleaning along the annular implanting pore, which is beneficial to improving the cleaning effect on the tooth surface. When there are multiple second implanting pores and they surround the first implanting pore, the filaments with cleaning effect and whitening effect can cooperate with each other. However, compared with the aforementioned annular implanting pore, the filaments of the second middle brush filament cluster may have a smaller swing amplitude in this solution, while the fixing effect on the filaments is relatively stable. When the first middle brush filament cluster and the second middle brush filament cluster are arranged in an interleaved manner, the shape selection of the second implanting pore is more diverse and can be arbitrarily selected according to requirements and costs, etc., which is beneficial to reducing the production difficulty and improving the production efficiency.

[0081] Optionally, referring to Figure 4 , the first middle brush filament cluster 22 is arranged in a surrounding manner outside the second middle brush filament cluster 31. The cross-section of the first implanting pore 11 is polygonal, there are multiple second implanting pores 12 and they surround the first implanting pore 11. The difference between the number of the second implanting pores 12 and the number of sides of the first implanting pore 11 is less than the first threshold, and the multiple second implanting pores 12 are rotationally symmetric with the second middle brush filament cluster 31 as the center. The first threshold here can be a positive integer such as 0, 1, 2, 3, etc.

[0082] Based on the above settings, combined with Figure 3 , when the user brushes teeth using the modified Bass brushing method, on the one hand, the motor of the toothbrush drives the carrier to reciprocally swing in the left-right direction of the paper surface of Figure 3 , so that the second middle brush filament cluster swings left and right reciprocally. On the other hand, when the user drives the toothbrush head to perform a circular motion, the first middle brush filament cluster can swing omnidirectionally in a rotationally symmetric manner with the second middle brush filament cluster as the center. In this way, uniform cleaning of the tooth surface can be achieved, effective cleaning of dead corner areas (such as the gum line, tooth adjacent surface area, etc.) can be carried out, and all-round cleaning of each tooth (tooth surface + gum line (gingival sulcus / periodontal pocket) + gum) can be carried out. In addition, by controlling the difference between the number of the second implanting pores and the number of sides of the first implanting pore to be less than the first threshold, it can be ensured that the arrangement of the first middle brush filament cluster and the second middle brush filament cluster is more beautiful, and the utilization rate of the hair implanting space on the carrier is higher.

[0083] Optionally, referring to Figure 3 , the first threshold is 1, the cross-section of each second implanting pore 12 is strip-shaped, and the extending direction of each second implanting pore 12 is parallel to one side of the first implanting pore 11.

[0084] In this embodiment, the first threshold is 1, that is, the number of the second implant pores is equal to the number of sides of the first implant pore. By making the cross-section of each second implant pore strip-shaped and extending parallel to one side of the first implant pore, the first middle brush filament cluster and the second middle brush filament cluster form a flower-like matching structure, which can effectively improve the aesthetic appearance of the toothbrush head.

[0085] Optionally, the size of the first implant pore 11 is between 2 - 3 mm.

[0086] There are multiple second implant pores 12 surrounding the first implant pore 11, and the size of the second implant pores 12 is between 1 - 2 mm.

[0087] It should be noted that the foregoing "size" has different meanings according to the cross-sectional shape of the implant pore. For a circular shape, the size refers to the diameter; for a polygon, the size refers to the diameter of the circumscribed circle; for a strip shape, the size refers to its width; for an annular shape, the size refers to the radius difference between its inner ring and outer ring.

[0088] By limiting the size of the first implant pore within the foregoing range, it can ensure that there is a relatively large area in the middle of the toothbrush head for installing brush filaments with a brightening effect, which is conducive to achieving high-efficiency whitening of teeth; and by limiting the size of the second implant pore within the foregoing range, it can ensure that the proportion of brush filaments with a high cleaning effect on the toothbrush head is relatively large (cumulative), and together with the brush filaments with a brightening effect, it can achieve high-efficiency cleaning and whitening.

[0089] In some embodiments, referring to Figure 6 ( Figure 6 (The left side is a side view schematic diagram of the first arc surface x and the second arc surface y. Only the highest arc of the first arc surface and the highest arc of the second arc surface are drawn when viewed from the side. Here, the height is relative to the hair-planting plane of the carrier), the lengths of the brush filaments in the first brush filament cluster group 2 and the second brush filament cluster group 3 gradually become shorter and then gradually become longer in the axial direction of the carrier 1 to form the first arc surface x, and the lengths of the brush filaments in the third brush filament cluster group 4 gradually become shorter and then gradually become longer in the axial direction of the carrier 1 to form the second arc surface y. The maximum height difference between the first arc surface x and the second arc surface y is greater than or equal to 1 mm.

[0090] Combined with Figure 6 , when the first arc surface and the second arc surface are viewed from the side, they actually appear as two knife shapes (i.e., two arcs) with different heights. The knife shape corresponding to the first arc surface is higher than the knife shape corresponding to the second arc surface, and their maximum height difference is greater than or equal to 1 mm. In this way, it can ensure that when the user approaches the tooth k and the gum j with the toothbrush at a certain angle (such as 45 degrees) (refer to Figure 12) The first brush filament cluster group can come into contact with the teeth or the gum line, while the filaments of the third brush filament cluster group come into contact with the tooth surface or the gum surface. Since the filaments of the third brush filament cluster group are shorter in length, the pressure on the gums is smaller, or there may be a gap with the gums, thus achieving the effect of protecting the gums. When brushing teeth using the 45° Bass brushing method, the first arc surface can be completely fitted to the gum line arc of at least two or three teeth, thereby effectively cleaning the dental plaque in the gum line area (gingival sulcus + periodontal pocket); the second arc surface can come into contact with the tooth surface and clean the tooth surface through periodic swinging, or come into contact with the gums and clean the gums through periodic swinging. It should be noted that the two arc surfaces extend continuously in the axial direction of the carrier and may converge at one end of the arc surface to enable uniform transition of different cluster groups at this end, so as to improve the aesthetics of the toothbrush head.

[0091] In some embodiments, the length range of the filaments of the first brush filament cluster group 2 is between 8 - 15 mm, the length range of the filaments of the second brush filament cluster group 3 is between 5 - 9 mm, and the length range of the filaments of the third brush filament cluster group 4 is between 5 - 7 mm.

[0092] By setting the length of the filaments of the first brush filament cluster group between 8 - 15 mm, it can ensure that the filaments of the first brush filament cluster group have greater elasticity and can swing significantly when the toothbrush head vibrates, so as to effectively remove the stains on the tooth surface; setting the length of the filaments of the second brush filament cluster group between 5 - 9 mm can ensure that the filaments of the second brush filament cluster group have greater rigidity and have a better friction effect on the tooth surface, making it easy to achieve the whitening effect; while setting the length of the filaments of the third brush filament cluster group between 5 - 7 mm can ensure that the filaments of the third brush filament cluster group are not likely to touch the gums when applied to the Bass brushing method, and thus it is easy to achieve the effect of protecting the gums.

[0093] In some embodiments, the swinging angle of the filaments in the first brush filament cluster group 2 relative to the normal line 100 of the hair-planting plane 10 of the carrier 1 is within the range of 5 - 20°;

[0094] The swinging angle of the filaments in the second brush filament cluster group 3 relative to the normal line 100 of the hair-planting plane 10 of the carrier 1 is within the range of 2 - 5°;

[0095] The swinging angle of the filaments in the third brush filament cluster group 4 relative to the normal line 100 of the hair-planting plane 10 of the carrier 1 is within the range of 0 - 2°.

[0096] Combined Figure 9 Here, the swinging angle of the filaments relative to the normal line 100 of the hair-planting plane 10 of the carrier 1 is Figure 9The γ angle mentioned in [reference] is simply referred to as the relative swing angle in this article. The relative swing angle γ refers to the angle between the ideal bristle g and the actual bristle h when the motor drives the toothbrush head to vibrate. The ideal bristle refers to the bristle in the ideal state (the bristle and the carrier movement are consistent), and the actual bristle refers to the bristle that will actually bend to a certain extent. When the relative swing angle γ is less than or equal to 5°, the actual bristle can be regarded as having the same movement as the carrier, that is, when the carrier rotates driven by the motor, the angle of the bristle and the carrier rotation can be regarded as the same. When this movement consistency is achieved, the area swept by the bristle can be corresponded to the power parameters set by the technician. The technician can set the parameters of the power (such as the motor) so that the actual bristle movement range is consistent with the required movement range (such as Figure 10 shown), the bristle movement area and the tooth surface target cleaning area can be accurately matched, so that the bristle and the tooth surface always perform high-quality cleaning movements, and the tooth cleaning effect is better. In implementation, the length, cross-sectional area and shape of the bristle and the pore shape of the bristle implantation hole can be adjusted to perform a matching test with the power parameters (angle, torque, etc.) to determine the bristle type that can cooperate with the set power parameters to achieve movement consistency.

[0097] Reference Figure 11 , the required bristle type can also be determined by means of the relative swing amplitude X = L·sinβ, where L is the bristle length and β is the relative swing angle of the bristle. It can be understood that the relative swing amplitude here refers to the length swept by the bristle relative to the normal of the bristle implantation plane. Similarly, the relative swing amplitude can be used to evaluate whether the bristle and the carrier have achieved movement consistency.

[0098] In this embodiment, the relative swing angles of the second bristle cluster group and the third bristle cluster group are both within 5°. Furthermore, the movement of these two groups of bristle clusters and the carrier is consistent, so that it can be ensured that different brightening and gum protection effects can be adjusted by adjusting the power parameters. Among them, the relative swing angle of the second bristle cluster group can be relatively larger than that of the third bristle cluster group because the bristles of the second bristle cluster group need to have relative friction with the tooth surface to enhance the brightening effect. And the relative swing angle of the first bristle cluster group can be larger to ensure efficient cleaning.

[0099] In some embodiments, in combination with Figure 1-2 and 4-5, the end bristle cluster 21 is installed on the carrier 1 through the third bristle implantation hole 13, and the cross-sectional shape of the third bristle implantation hole 13 includes a circle or a polygon;

[0100] The supplementary bristle cluster 32 is installed on the carrier 1 through the fourth bristle implantation hole 14, and the cross-sectional shape of the fourth bristle implantation hole 14 includes a strip shape;

[0101] The side brush filament clusters 41 include multiple clusters of brush filaments, and each cluster of brush filaments is installed on the carrier 1 through a fifth filament planting hole 15. The cross-sectional shape of the fifth filament planting hole 15 includes a strip shape.

[0102] In this embodiment, the end brush filament clusters can be installed on the carrier by means of circular or polygonal filament planting holes, which can make full use of the space at the end of the carrier; the supplementary brush filament clusters are installed on the carrier through strip-shaped filament planting holes, which can make full use of the gap positions between different brush filament clusters in the carrier; the side brush filament clusters are installed on the carrier by means of strip-shaped filament planting holes, which can ensure the efficient assembly of the side brush filament clusters.

[0103] Optionally, the size of the third filament planting hole 13 is between 2 - 3 mm;

[0104] The size of the fifth filament planting hole 15 is between 0.8 - 1.5 mm;

[0105] The size of the fourth filament planting hole 14 is between 0.8 - 1.5 mm.

[0106] Here, the size of the third filament planting hole refers to the diameter of a circle or the diameter of the circumscribed circle of a polygon. By setting the size of the third filament planting hole between 2 - 3 mm, it can ensure a large number of brush filaments in the end brush filament clusters and ensure effective cleaning of concave positions such as the adjacent surfaces of teeth or the gum line. When the fourth and fifth filament planting holes are strip-shaped, their sizes refer to the widths of the strip-shaped holes. Setting the widths of these two types of holes between 0.8 - 1.5 mm can ensure a larger number of strip-shaped holes on the carrier and effectively improve the space utilization efficiency on the carrier.

[0107] In some embodiments, the cross-sections of the brush filaments in the first brush filament cluster group 2 and the third brush filament cluster group 4 are triangular or circular, and the cross-sections of the brush filaments in the second brush filament cluster group 3 are rhombic.

[0108] For brush filaments with the same cross-sectional area, different cross-sectional shapes also have a greater impact on the rigidity of the brush filaments. On the premise of the same cross-sectional area, the rigidity of brush filaments with rhombic, triangular, and circular cross-sections gradually decreases, and the elasticity gradually increases. Therefore, in this embodiment, setting the cross-sections of the brush filaments in the first brush filament cluster group and the third brush filament cluster group to be triangular or circular makes the elasticity of these two groups of brush filaments larger and the rigidity smaller. On the one hand, it ensures that the brush filaments in the first brush filament cluster group can swing with a larger amplitude, and on the other hand, it ensures that the brush filaments in the third brush filament cluster group cause less harm to the gums. And setting the cross-sections of the brush filaments in the second brush filament cluster group to be rhombic can make the brush filaments in the second brush filament cluster group have a greater rigidity, and thus have a better brightening effect on the tooth surface.

[0109] Optionally, the third brush filament cluster group has fading brush filaments, which can be pointed filaments or round filaments. In this way, the effect of reminding the user of the current life of the toothbrush can be achieved.

[0110] In some embodiments, with reference to Figure 7 , the toothbrush head further includes a central back plate 5 and a soft rubber layer 6. The carrier 1 is mounted on the central back plate 5, and the soft rubber layer 6 wraps the central back plate 5 and the side surface of the carrier 1.

[0111] In this embodiment, by providing the soft rubber layer, it can be ensured that when the toothbrush head accidentally touches the gums or the skin in the oral cavity during operation, the software layer can provide sufficient buffering to reduce the damage to the gums and the skin in the oral cavity during the collision. At the same time, when the outer soft rubber layer receives the buccal mucosal part of the human oral cavity, it can reduce the friction with the oral cavity, thereby generating a comfortable feeling when brushing teeth.

[0112] In some embodiments, in combination with Figure 1 , a second middle bristle cluster 31 and a first middle bristle cluster 22 surrounding the second middle bristle cluster 31 form a brushing site z, and the number of brushing sites z included in the toothbrush head is 1, 2, 3, 4, or 5.

[0113] The brushing site here has a central whitening function and a peripheral cleaning function. With such a brushing site, a comprehensive cleaning and whitening treatment (tooth surface, gum line area, and adjacent surface area) of a tooth can be achieved. When there is one brushing site on the toothbrush head, the toothbrush head can be moved to sequentially clean each tooth with this brushing site. When there are two brushing sites on the toothbrush head, by moving the toothbrush head, the two brushing sites can sequentially clean 2 incisors, 1 canine + 1 incisor, 1 canine + 1 premolar, 2 premolars, 1 premolar + 1 molar, and 2 molars. And so on. The more brushing sites there are, the shorter the time to clean all the teeth once, but the corresponding volume of the toothbrush head may become larger. It should be noted that the general area of each brushing site can be similar to the tooth surface area of a tooth, so as to ensure a more comprehensive cleaning of each tooth by the brushing site.

[0114] Optionally, the number of brushing sites z included in the toothbrush head is two, and the proportion of the two brushing sites z among all the bristles on the toothbrush head is between 40% and 60%. Here, the proportion can be an area proportion or a bristle number proportion, etc.

[0115] For the solution with two brushing sites, limiting the proportion of the two brushing sites between 40% and 60% can, on the one hand, ensure better cleaning effects on the tooth surface, gum line, and dental stains, and on the other hand, ensure better comfort when brushing teeth. Optionally, the above proportion can be 50%.

[0116] In addition, the toothbrush head of the present disclosure is prepared by a copper-free process, that is, instead of using metal sheets to fix the bristles, the bristles are arranged neatly and then sucked into the implant pores by vacuum extraction. Finally, high-temperature sol is used to fix the roots of the bristles in the carrier, thus avoiding the problems of metal and metal oxidation and making it healthier and more reassuring to use. The toothbrush head may also have a brush handle, and the aforementioned central back plate may be connected to or integral with the brush handle. The outside of the brush handle may be wrapped with hard rubber.

[0117] In summary, the embodiments of the present disclosure provide a toothbrush head. Different bristle cluster groups of the toothbrush head have different effects, enabling the toothbrush head to simultaneously achieve the effects of cleaning, whitening teeth, and protecting the gums. Moreover, by designing the shape of the implant pores, the length and cross-section of the bristles, and the relative swing angle of the bristles, etc., the bristles in different parts can move in different ways, improving the cleaning and whitening effects of the teeth and the gum protection effect, etc.

[0118] In a second aspect, the embodiments of the present disclosure provide a toothbrush. Referring to Figure 8 , the toothbrush has a motor 7 and any one of the toothbrush heads 0 as described above. When the motor 7 operates, it drives the toothbrush head 0 to vibrate.

[0119] The toothbrush head of the toothbrush provided by the embodiments of the present disclosure has multiple groups of bristle clusters. The length of the first bristle cluster group is higher than that of other clusters, and thus it can swing significantly under the drive of the motor, taking away various stains on the tooth surface and being suitable for deeply cleaning concave positions such as the gum line; the elastic modulus of the second bristle cluster group is higher than that of other clusters and is located in the middle of the carrier, and it can contact the tooth surface and rub against the tooth surface during the brushing process to achieve a relatively obvious friction whitening effect; the third bristle cluster group includes two side bristle clusters arranged on both sides of the first middle bristle cluster and the second middle bristle cluster, and the length is shorter, which can ensure that when the user brushes teeth at an inclined angle (such as 45 degrees), the pressure of the side bristle clusters on the gums is smaller, achieving the gum protection effect. In addition, the first middle bristle cluster of the first bristle cluster group is arranged around the second middle bristle cluster, or the first middle bristle cluster and the second middle bristle cluster are arranged alternately, enabling the bristles in the middle position of the carrier to have both high cleaning effect and friction whitening effect, realizing the coordination of the two effects.

[0120] In the present disclosure, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. The term "plurality" means two or more, unless otherwise clearly defined.

[0121] Other embodiments of the present disclosure will be readily apparent to those skilled in the art upon consideration of the specification and practice of the disclosure herein. The present disclosure is intended to cover any variations, uses, or adaptations of the disclosure following the general principles of the disclosure and including known common general knowledge or conventional technical means in the technical field not disclosed herein. The specification and examples are only to be considered as exemplary.

[0122] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A toothbrush head, characterized in that: The brush comprises a carrier (1) and a first brush filament cluster group (2), a second brush filament cluster group (3) and a third brush filament cluster group (4) mounted on the carrier (1), wherein the length of the first brush filament cluster group (2) is greater than or equal to the length of the third brush filament cluster group (4), and the elastic modulus of the second brush filament cluster group (3) is greater than the elastic modulus of the first brush filament cluster group (2) and the elastic modulus of the third brush filament cluster group (4); The first brush filament cluster group (2) comprises a first middle brush filament cluster (22), and the second brush filament cluster group (3) comprises a second middle brush filament cluster (31), wherein the first middle brush filament cluster (22) is arranged around the periphery of the second middle brush filament cluster (31), or the multiple clusters of brush filaments included in the first middle brush filament cluster (22) and the multiple clusters of brush filaments included in the second middle brush filament cluster (31) are arranged alternately; The third brush filament cluster group (4) comprises two groups of side brush filament clusters (41), and the first middle brush filament cluster (22) and the second middle brush filament cluster (31) are located between the two groups of side brush filament clusters (41).

2. The toothbrush head according to claim 1, characterized in that: The first brush filament cluster group (2) further comprises an end brush filament cluster (21), wherein the end brush filament cluster (21) is located at at least one end of the carrier (1) in the axial direction; The second brush filament cluster group (3) further comprises two supplementary brush filament clusters (32), wherein the two supplementary brush filament clusters (32) are located between the two groups of side brush filament clusters (41) and are respectively located on both sides of the central axis of the carrier (1).

3. The toothbrush head according to claim 2, characterized in that: The centers of the end brush filament cluster (21), the first middle brush filament cluster (22) and the second middle brush filament cluster (31) are all located on the central axis of the carrier (1).

4. The toothbrush head according to any one of claims 1 to 3, characterized in that: The second middle brush filament cluster (31) is installed on the carrier (1) through a first bristle implantation hole (11) on the carrier (1), and the cross-sectional shape of the first bristle implantation hole (11) includes a circle or a polygon; The first middle brush filament cluster (22) is mounted on the carrier (1) through the second hair implantation hole (12). The first middle brush filament cluster (22) is arranged around the periphery of the second middle brush filament cluster (31), the second implanting hole (12) is a circular ring surrounding the first implanting hole (11), or the first middle brush filament cluster (22) is composed of a plurality of clusters of brush filaments surrounding the second middle brush filament cluster (31), the second implanting hole (12) is a plurality of clusters surrounding the first implanting hole (11), each cluster of brush filaments of the first middle brush filament cluster (22) is mounted on the carrier (1) through one of the second implanting holes (12), or, The multiple clusters of brush filaments included in the first middle brush filament cluster (22) and the multiple clusters of brush filaments included in the second middle brush filament cluster (31) are arranged alternately, and the cross-sectional shape of the second hair implantation hole (12) includes a circle, a strip or a polygon.

5. The toothbrush head according to claim 4, characterized in that: The first middle brush filament cluster (22) is arranged around the periphery of the second middle brush filament cluster (31), the cross-section of the first implanted hair hole (11) is polygonal, the second implanted hair holes (12) are multiple and surround the first implanted hair hole (11), the difference between the number of the second implanted hair holes (12) and the number of sides of the first implanted hair holes (11) is less than a first threshold, and the multiple second implanted hair holes (12) are rotationally symmetrical with the second middle brush filament cluster (31) as the center.

6. The toothbrush head according to claim 5, characterized in that: The first threshold is 1, the cross section of each of the second hair transplantation holes (12) is strip-shaped, and the extension direction of each of the second hair transplantation holes (12) is parallel to one side of the first hair transplantation hole (11).

7. The toothbrush head according to claim 4, characterized in that: The size of the first hair transplantation hole (11) is between 2-3 mm. The second hair transplantation holes (12) are multiple and surround the first hair transplantation holes (11), and the size of the second hair transplantation holes (12) is between 1-2 mm.

8. The toothbrush head according to any one of claims 1 to 3 and 5 to 7, characterized in that: The lengths of the brush filaments in the first brush filament cluster group (2) and the second brush filament cluster group (3) first gradually shorten and then gradually lengthen in the axial direction of the carrier (1) to form a first curved surface (x); the lengths of the brush filaments in the third brush filament cluster group (4) first gradually shorten and then gradually lengthen in the axial direction of the carrier (1) to form a second curved surface (y); and the maximum height difference between the first curved surface (x) and the second curved surface (y) is greater than or equal to 1 mm.

9. The toothbrush head according to any one of claims 1-3 and 5-7, characterized in that: The length of the brush filaments of the first brush filament cluster group (2) ranges from 8 to 15 mm, the length of the brush filaments of the second brush filament cluster group (3) ranges from 5 to 9 mm, and the length of the brush filaments of the third brush filament cluster group (4) ranges from 5 to 7 mm.

10. The toothbrush head according to any one of claims 1-3 and 5-7, characterized in that: The oscillation angle of the brush filaments in the first brush filament cluster group (2) relative to the normal line of the bristle planting plane (10) of the carrier (1) is in the range of 5-20°; The oscillation angle of the brush filaments in the second brush filament cluster group (3) relative to the normal line of the bristle planting plane (10) of the carrier (1) is within the range of 2-5°; The swing angle of the brush filaments in the third brush filament cluster group (4) relative to the normal line of the bristle implantation plane (10) of the carrier (1) is in the range of 0-2°.

11. The toothbrush head according to claim 2, characterized in that: The end brush filament cluster (21) is mounted on the carrier (1) through a third hair implantation hole (13), and the cross-sectional shape of the third hair implantation hole (13) includes a circle or a polygon; The supplementary brush filament cluster (32) is mounted on the carrier (1) through a fourth hair implantation hole (14), and the cross-sectional shape of the fourth hair implantation hole (14) includes a strip shape; The side brush filament cluster (41) includes a plurality of brush filament clusters, each of which is mounted on the carrier (1) via a fifth bristle implantation hole (15), and the cross-sectional shape of the fifth bristle implantation hole (15) includes a strip shape.

12. The toothbrush head according to claim 11, characterized in that The size of the third hair transplantation hole (13) is between 2-3 mm; The size of the fifth hair implantation hole (15) is between 0.8-1.5 mm; The size of the fourth hair implantation hole (14) is between 0.8-1.5 mm.

13. The toothbrush head according to any one of claims 1-3, 5-7 and 11-12, characterized in that: The cross-section of the brush filaments of the first brush filament cluster group (2) and the third brush filament cluster group (4) is triangular or circular, and the cross-section of the brush filaments of the second brush filament cluster group (3) is rhombus-shaped.

14. The toothbrush head according to any one of claims 1-3, 5-7 and 11-12, characterized in that: The second central brush filament cluster (31) and the first central brush filament cluster (22) surrounding the second central brush filament cluster (31) form a brushing site (z), and the number of brushing sites (z) included in the toothbrush head is 1, 2, 3, 4 or 5.

15. The toothbrush head according to claim 14, characterized in that The toothbrush head comprises two brushing sites (z), and the proportion of the two brushing sites (z) to all the brush filaments on the toothbrush head is between 40% and 60%.

16. A toothbrush, characterized in that: It comprises a motor (7) and a toothbrush head (0) as claimed in any one of claims 1 to 15, wherein the motor (7) drives the toothbrush head (0) to vibrate when working.

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