Brush head and electric toothbrush

Abstract

The utility model discloses a brush head and an electric toothbrush, the brush head comprises a brush head body and a plurality of brush wire clusters, the brush head body is provided with a plurality of brush wire holes, the brush wire clusters are fixed in each brush wire hole, the plurality of brush wire holes comprise a plurality of outer-ring brush wire holes and a plurality of inner-ring brush wire holes, the plurality of outer-ring brush wire holes are distributed around the plurality of inner-ring brush wire holes, and the plurality of inner-ring brush wire holes are distributed around the plurality of outer-ring brush wire holes. The multiple inner ring brush wire holes comprise the first brush wire holes, the second brush wire holes and the third brush wire holes, the first brush wire holes and the second brush wire holes are symmetrical about the central axis of the brush head body, the first brush wire holes and the second brush wire holes are arc-shaped holes, the arc inner edges of the first brush wire holes and the second brush wire holes are opposite, and the third brush wire holes are located between the first brush wire holes and the second brush wire holes and located on the central axis. And the blades are symmetrical about the central axis. The brush wire clusters in the first brush wire holes, the second brush wire holes and the third brush wire holes can swing in different directions, all areas can be cleaned in all directions, and therefore the cleaning effect of the brush head on the oral cavity is improved.

Description

Technical Field

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

[0002] With the advancement of technology and the improvement of living standards, people's demand for the use of electric toothbrushes is gradually increasing.

[0003] In the related art, an electric toothbrush typically includes a handle and a brush head mounted on the handle. The brush head often includes a brush body and multiple bristle tufts connected to the brush body. The multiple bristle tufts are evenly distributed on the brush body. When using the electric toothbrush, the brush handle drives the brush head to vibrate at a high frequency in a specific direction, causing the multiple bristle tufts to swing in the specific direction to clean the teeth.

[0004] However, in the above structure, all the bristle clusters on the brush head oscillate in the same direction. However, for some areas in the mouth (such as the edges of the teeth), the bristle clusters need to move along the curved direction of the area in order to effectively clean that area. Therefore, when brushing teeth, the user needs to adjust the direction of the brush head several times to effectively clean various areas in the mouth. Utility Model Content

[0005] The embodiments of the present disclosure provide a brush head and an electric toothbrush that can solve the above-mentioned technical problems existing in the related art. The technical solution is as follows:

[0006] In a first aspect, a brush head is provided, comprising a brush head body and a plurality of brush filament clusters;

[0007] The brush head body has a plurality of brush holes, each of which is fixed with a brush cluster, and the plurality of brush holes include a plurality of outer ring brush holes and a plurality of inner ring brush holes, wherein the plurality of outer ring brush holes are distributed around the periphery of the plurality of inner ring brush holes;

[0008] The multiple inner circle brush holes include a first brush hole, a second brush hole and a third brush hole. The first brush hole and the second brush hole are symmetrical about the central axis of the brush head body. The first brush hole and the second brush hole are both arc-shaped holes, and the inner edges of the arcs are opposite. The third brush hole is located between the first brush hole and the second brush hole, and is located on the central axis, and is symmetrical about the central axis.

[0009] In a possible implementation, the first brush hole has a first straight section and a first curved section connected to each other, the first straight section forms a preset angle α with the central axis, α≤30°, and the first curved section extends from the first straight section toward the second brush hole;

[0010] The second brush hole has a second straight section and a second curved section connected to each other. The second straight section forms a preset angle β with the central axis, β≤30°. The second curved section extends from the second straight section toward the first brush hole.

[0011] In a possible implementation, the third brush hole is located between the first straight segment and the second straight segment.

[0012] In a possible implementation, the dimension of the third brush hole in the length direction is a, and the dimension in the width direction is b, 1mm≤a≤10mm, 1mm≤b≤10mm, the length direction is the extension direction of the central axis, and the width direction is perpendicular to the length direction.

[0013] In a possible implementation, the plurality of inner ring brush holes further include a fourth brush hole, a fifth brush hole, and a sixth brush hole;

[0014] The fourth brush hole is adjacent to the first brush hole and is symmetrical to the first brush hole about a plane perpendicular to the central axis;

[0015] The fifth brush hole is adjacent to the second brush hole and is symmetrical to the second brush hole about the plane;

[0016] The sixth brush hole is adjacent to the third brush hole and is symmetrical to the third brush hole with respect to the plane.

[0017] In a possible implementation, a distance between the third brush hole and the sixth brush hole is c, and 0.6 mm ≤ c ≤ 2 mm.

[0018] In a possible implementation, the sum of the cross-sectional areas of the first brush hole, the second brush hole, the third brush hole, the fourth brush hole, the fifth brush hole, and the sixth brush hole is S1, the sum of the cross-sectional areas of all the brush holes is S2, and 0.4≤S1:S2≤0.55.

[0019] In a possible implementation, the plurality of outer ring brush holes include a seventh brush hole and an eighth brush hole;

[0020] The seventh brush hole is located on a side of the first brush hole and the fourth brush hole away from the central axis, the eighth brush hole is located on a side of the second brush hole and the sixth brush hole away from the central axis, and the seventh brush hole and the eighth brush hole are symmetrical about the central axis.

[0021] In a possible implementation, the plurality of inner ring brush holes further include a ninth brush hole and a tenth brush hole;

[0022] The ninth brush hole and the tenth brush hole are located on the central axis, the ninth brush hole is located on one side of the first brush hole, the second brush hole and the third brush hole, and the tenth brush hole is located on the other side of the first brush hole, the second brush hole and the third brush hole, and are symmetrical about a plane perpendicular to the central axis.

[0023] In a possible implementation, the plurality of outer ring brush holes include an eleventh brush hole, a twelfth brush hole, a thirteenth brush hole, and a fourteenth brush hole, and the eleventh brush hole, the twelfth brush hole, the thirteenth brush hole, and the fourteenth brush hole are all arc-shaped holes;

[0024] The eleventh brush hole and the twelfth brush hole are respectively located on both sides of the ninth brush hole, with their arc inner edges facing each other and symmetrical along the central axis. The thirteenth brush hole and the fourteenth brush hole are respectively located on both sides of the tenth brush hole, with their inner arc edges facing each other and symmetrical along the central axis. The eleventh brush hole and the thirteenth brush hole are symmetrical about a plane perpendicular to the central axis.

[0025] In one possible implementation, there is a height difference h between the height of the brush filament clusters in the multiple outer circle brush filament holes protruding from the brush head body and the height of the brush filament clusters in the multiple inner circle brush filament holes protruding from the brush head body, 1mm≤h≤5mm.

[0026] In a possible implementation, the sum of the cross-sectional areas of all brush filaments in all brush filament clusters is S3, the sum of the cross-sectional areas of all brush filament holes is S4, and 0.55≤S3:S4≤0.65.

[0027] In a second aspect, an electric toothbrush is provided, comprising the brush head described in the first aspect.

[0028] The beneficial effects of the technical solution provided by the present disclosure include at least:

[0029] When the brush head body vibrates in a certain direction, the portion of the brush filament cluster located within the filament hole will move along with the brush head in that direction, and the portion of the brush filament cluster protruding from the filament hole will bend. Specifically, for the brush filament cluster fixed within the arc-shaped hole, under the constraint of the arc-shaped hole wall, the portion of the brush filament cluster protruding from the arc-shaped hole will tend to bend along the extension direction (i.e., tangential direction) of the arc-shaped hole during movement, thereby having a tendency to move along the extension direction of the arc-shaped hole. As a result, the brush filament clusters within the first, second, and third filament holes will move in different directions. When brushing, the user does not need to adjust the direction of the brush head multiple times, and can clean various areas (such as the edges of the tooth surface) in various directions, thereby improving the cleaning effect of the brush head on the oral cavity.

[0030] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0032] Figure 1 is an exploded schematic diagram of a brush head provided by an embodiment of the present disclosure;

[0033] Figure 2 This is a partial structural diagram of a brush head provided by an embodiment of the present disclosure;

[0034] Figure 3 It is a partial structural schematic diagram of a brush head provided in an embodiment of the present disclosure.

[0035] Reference numerals:

[0036] 1. Brush head body;

[0037] 11. Outer ring brush hole;

[0038] 111, seventh brush hole; 112, eighth brush hole;

[0039] 113, the eleventh brush hole; 114, the twelfth brush hole; 115, the thirteenth brush hole; 116, the fourteenth brush hole;

[0040] 12. Inner ring brush hole;

[0041] 121, first brush hole; 1211, first straight section; 1212, first curved section; 122, second brush hole; 1221, second straight section; 1222, second curved section; 123, third brush hole;

[0042] 124, fourth brush hole; 125, fifth brush hole; 126, sixth brush hole;

[0043] 127, ninth brush hole; 128, tenth brush hole;

[0044] 2. Brush filament cluster;

[0045] 31. The first hair transplanting piece;

[0046] 32. The second hair transplanting piece;

[0047] 33. The third hair transplanting piece. DETAILED DESCRIPTION

[0048] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0049] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in the present disclosure may be combined with each other. The present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0050] The present disclosure provides a brush head, such as Figure 1 As shown, the brush head includes a brush head body 1 and a plurality of bristle clusters 2. The brush head body 1 has a plurality of bristle holes, each of which is fixed with a bristle cluster 2. The plurality of bristle holes include a plurality of outer ring bristle holes 11 and a plurality of inner ring bristle holes 12. The plurality of outer ring bristle holes 11 are distributed around the periphery of the plurality of inner ring bristle holes 12.

[0051] Furthermore, if Figure 2 As shown, the multiple inner circle brush holes 12 include a first brush hole 121, a second brush hole 122 and a third brush hole 123. The first brush hole 121 and the second brush hole 122 are symmetrical about the central axis L of the brush head body 1. The first brush hole 121 and the second brush hole 122 are both arc-shaped holes, and the inner edges of the arcs are opposite. The third brush hole 123 is located between the first brush hole 121 and the second brush hole 122, and is located on the central axis L, and is symmetrical about the central axis L.

[0052] In this way, when the brush head body 1 vibrates in a certain direction, the portion of the brush filament cluster 2 located within the brush filament hole will move along with the brush head in that direction, and the portion of the brush filament cluster 2 protruding from the brush filament hole will bend. Specifically, for the brush filament cluster 2 fixed within the arc-shaped hole (the first brush filament hole 121 and the second brush filament hole 122), under the constraint of the hole wall of the arc-shaped hole, the portion of the brush filament cluster 2 protruding from the arc-shaped hole will tend to bend along the extension direction (i.e., tangential direction) of the arc-shaped hole during movement, thereby having a tendency to move along the extension direction of the arc-shaped hole. As a result, the brush filament clusters 2 within the first brush filament hole 121, the second brush filament hole 122, and the third brush filament hole 123 will move in different directions. When brushing, the user does not need to adjust the direction of the brush head multiple times, and can clean various areas (such as the edge of the tooth surface) in various directions, thereby improving the cleaning effect of the brush head on the oral cavity.

[0053] For example: Figure 3As shown, when the brush head body 1 moves to the left, the part of the brush filament cluster 2 in the first brush filament hole 121 located in the first brush filament hole 121 will move to the left together with the brush head body 1, and the brush filament cluster 2 in the first brush filament hole 121 protruding from the first brush filament hole 121 will bend along the extension direction of the first brush filament hole 121. The movement direction of this part forms an angle γ with the movement direction of the brush head body 1, so that the brush filament cluster 2 in the first brush filament hole 121 moves along the extension direction of the first brush filament hole 121.

[0054] Compared with the technical solutions mentioned in the related art, the movement of each brush filament cluster 2 in the brush head has changed from the original single-direction swing to a full-range swing in all directions, thereby imitating the rotating brush filament movement of the human body's manual "improved Bass brushing method", and performing a full-range cleaning effect on each tooth, and can evenly clean the tooth surface, especially the blind corners such as near the gum line and the adjacent areas of the teeth.

[0055] The brush filament clusters 2 in the outer and inner rings of the brush holes 11 and 12 are used to clean different areas of the oral cavity. For example, the brush filament clusters 2 in the outer ring of the brush holes 11 are primarily used to clean areas such as the gaps between teeth and the gingival sulcus, while the brush filament clusters 2 in the inner ring of the brush holes 12 are primarily used to clean stains (such as dental plaque) on the surface of the teeth.

[0056] Among them, when the user is brushing his teeth, when cleaning the teeth on the upper and lower sides of the mouth, the parts where the first brush hole 121 and the second brush hole 122 contact the teeth will be swapped. By making the first brush hole 121 and the second brush hole 122 symmetrical about the central axis L, it can be ensured that the user has the same cleaning effect on the upper and lower sides when brushing his teeth.

[0057] Alternatively, as Figure 2 As shown, the first brush hole 121 and the second brush hole 122 are in an "eight" shape, and the first brush hole 121, the second brush hole 122 and the third brush hole 123 are in a "mountain" shape.

[0058] Optionally, the first brush hole 121 and the second brush hole 122 are in a “()” shape, and the third brush hole 123 is located in the “()” shape.

[0059] Alternatively, as Figure 2 As shown, one end of the first brush hole 121 , the second brush hole 122 and the third brush hole 123 are flush and perpendicular to the central axis L, and the other ends of the first brush hole 121 and the second brush hole 122 are opposite and parallel to the central axis L.

[0060] The brush head provided by the embodiments of the present disclosure will be explained below with reference to some examples.

[0061] In some examples, such as Figure 2 and Figure 3 As shown, the first brush hole 121 has a first straight section 1211 and a first curved section 1212 connected to each other. The first straight section 1211 forms a preset angle α with the central axis L, α≤30°. The first curved section 1212 extends from the first straight section 1211 toward the second brush hole 122. The second brush hole 122 has a second straight section 1221 and a second curved section 1222 connected to each other. The second straight section 1221 forms a preset angle β with the central axis L, β≤30°. The second curved section 1222 extends from the second straight section 1221 toward the first brush hole 121. The first straight section 1211 and the second straight section 1221 are symmetrical about the central axis L, and the first curved section 1212 and the second curved section 1222 are symmetrical about the central axis L, that is, α=β.

[0062] In this way, after being bent and squeezed, the part of the brush filaments of the brush filament cluster 2 located in the first curved section 1212, especially the part of the brush filaments near the connection position of the first curved section 1212 and the first straight section 1211, will obviously swing along the extension direction of the first curved section 1212. Therefore, the swing direction of the brush filament cluster 2 in the first brush filament hole 121 in the first curved section 1212 is obviously different from the vibration direction of the brush head body 1. Similarly, the swing direction of the brush filament cluster 2 in the second brush filament hole 122 at the second curved section 1222 is also obviously different from the vibration direction of the brush head body 1, thereby ensuring the cleaning effect of the brush head on the oral cavity.

[0063] Furthermore, the third brush hole 123 is located between the first straight section 1211 and the second straight section 1221 .

[0064] In this way, the brush filament cluster 2 in the third brush filament hole 123, the brush filament cluster 2 in the first brush filament hole 121 located in the first straight section 1211, and the brush filament cluster 2 in the second brush filament hole 122 located in the second straight section 1221 are used to clean the main area of ​​the tooth surface, and the brush filament cluster 2 in the first brush filament hole 121 located in the first curved section 1212 and the brush filament cluster 2 in the second brush filament hole 122 located in the second curved section 1222 are mainly used to clean the edge area of ​​the tooth surface to ensure the cleaning effect of the teeth.

[0065] Optionally, in the above examples, the value of α is 0°, 5°, 10°, 15°, 20°, 25° or 30°.

[0066] In some examples, such as Figure 3 As shown, the dimension of the third brush hole 123 in the length direction is a, and the dimension in the width direction is b, 1mm≤a≤10mm, 1mm≤b≤10mm, the length direction is the extension direction of the central axis L, and the width direction is perpendicular to the length direction.

[0067] Among them, in medicine, for adults, the lateral width of the front teeth (incisors) is usually 8mm-10mm, the lateral width of the canine teeth (canines) is usually 6mm-8mm, the lateral width of the premolars and molars is usually 7mm-9mm, and the occlusal surface width is usually 7-9mm.

[0068] Therefore, if the value of a is too small, the area of ​​the tooth surface covered by the brush filament cluster 2 in the third brush hole 123 in the direction of tooth arrangement is too small, making it difficult to ensure the cleaning effect on the teeth; if a is too large, the area of ​​the tooth surface covered by the brush filament cluster 2 in the third brush hole 123 in the direction of tooth arrangement is too large, making it difficult to ensure that the tooth surface edges can be effectively cleaned by the brush filament cluster 2 in the first brush hole 121 and the second brush hole 122. Setting 1mm≤a≤10mm not only ensures that the brush filament cluster 2 in the third brush hole 123 has a sufficiently large coverage area on the tooth surface of each tooth in the direction of tooth arrangement, but also prevents the coverage area from being too large, thereby ensuring the cleaning effect of the brush filament cluster 2 in the first brush hole 121 and the second brush hole 122 on the tooth surface edges.

[0069] Optionally, the value of a is 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 7.5mm, 9mm or 9.5mm.

[0070] In addition, if the value of b is too small, the area of ​​the tooth surface covered by the brush filament cluster 2 in the third brush hole 123 in the direction perpendicular to the tooth arrangement direction is too small, resulting in too low cleaning efficiency of the brush head. If the value of b is too large, the area of ​​the tooth surface covered by the brush filament cluster 2 in the third brush hole 123 in the direction perpendicular to the tooth arrangement direction is too large, making it difficult to ensure the cleaning effect of the brush filament cluster 2 in the first brush hole 121 and the second brush hole 122 on the tooth surface edges. Making 1mm≤b≤10mm can not only ensure that the brush filament cluster 2 in the third brush hole 123 has a sufficiently large coverage area on the tooth surface of each tooth in the direction perpendicular to the tooth arrangement direction, but also ensure the cleaning effect of the brush filament cluster 2 in the first brush hole 121 and the second brush hole 122 on the tooth surface edges.

[0071] Optionally, the value of b is 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 7.5mm, 9mm or 9.5mm.

[0072] In some examples, the plurality of inner ring brush holes 12 further include a fourth brush hole 124, a fifth brush hole 125, and a sixth brush hole 126. The fourth brush hole 124 is adjacent to the first brush hole 121 and is symmetrical with the first brush hole 121 about a vertical reference plane. The fifth brush hole 125 is adjacent to the second brush hole 122 and is symmetrical with the second brush hole 122 about a plane. The sixth brush hole 126 is adjacent to the third brush hole 123 and is symmetrical with the third brush hole 123 about a vertical reference plane. The vertical reference plane is a plane perpendicular to the central axis L.

[0073] The filament clusters 2 in the first, second, and third brush holes 121, 122, and 123 form a first brushing point, while the filament clusters 2 in the fourth, fifth, and sixth brush holes 124, 125, and 126 form a second brushing point. The first and second brushing points are symmetrical. This allows the brush head to clean adjacent teeth while the first point is being used to clean a tooth. This improves the cleaning efficiency of the brush head by utilizing both brushing points.

[0074] Further, such as Figure 3 As shown, the distance between the third brush hole 123 and the sixth brush hole 126 is c, 0.6 mm ≤ c ≤ 2 mm.

[0075] Among them, for an adult, the width of the gingival sulcus between two adjacent teeth is about 2mm, so that 0.6mm≤c≤2mm can prevent the distance between the first brushing point and the second brushing point from being too large or too small, thereby effectively ensuring the cleaning effect when cleaning two teeth at the same time through the first brushing point and the second brushing point.

[0076] Optionally, through the first brushing point and the second brushing point, two incisors can be cleaned at the same time, or one canine + one incisor can be cleaned at the same time, or one canine + one premolar can be cleaned at the same time, or two premolars can be cleaned at the same time, or one premolar + one molar can be cleaned at the same time, or two molars can be cleaned at the same time.

[0077] Illustratively, the sum of the cross-sectional areas of the first brush hole 121 , the second brush hole 122 , the third brush hole 123 , the fourth brush hole 124 , the fifth brush hole 125 and the sixth brush hole 126 is S1 , the sum of the cross-sectional areas of all the brush holes is S2 , and 0.4≤S1:S2≤0.55.

[0078] If the ratio of S1 to S2 is too small, the brush head will not clean the tooth surface well. If the ratio of S1 to S2 is too large, the brush head will not be comfortable to touch during brushing. Setting 0.4 ≤ S1: S2 ≤ 0.55 ensures both a good cleaning effect and a comfortable touch.

[0079] For example, Figure 2 As shown, the plurality of outer ring brush holes 11 include a seventh brush hole 111 and an eighth brush hole 112. The seventh brush hole 111 is located on a side of the first brush hole 121 and the fourth brush hole 124 away from the central axis L, and the eighth brush hole 112 is located on a side of the second brush hole 122 and the sixth brush hole 126 away from the central axis L. The seventh brush hole 111 and the eighth brush hole 112 are symmetrical about the central axis L.

[0080] In this way, while the tooth surface is effectively cleaned through the first brushing point and the second brushing point, the brush wire cluster 2 in the seventh brush wire hole 111 and the eighth brush wire hole 112 can massage the gums to promote gum keratinization, thicken the gum epithelium, promote local blood circulation, and improve tooth tissue metabolism, thereby increasing the gum's resistance to external stimuli, reducing gum atrophy, and preventing the occurrence of periodontitis.

[0081] Alternatively, as Figure 2 As shown, the seventh brush hole 111 and the eighth brush hole 112 are arc-shaped, and the seventh brush hole 111 is symmetrical about the vertical reference plane, and the eighth brush hole 112 is symmetrical about the vertical reference plane.

[0082] In some examples, such as Figure 2 As shown, the plurality of inner ring brush holes 12 further include a ninth brush hole 127 and a tenth brush hole 128. The ninth brush hole 127 and the tenth brush hole 128 are located on the central axis L. The ninth brush hole 127 is located on one side of the first brush hole 121, the second brush hole 122, and the third brush hole 123, and the tenth brush hole 128 is located on the other side of the first brush hole 121, the second brush hole 122, and the third brush hole 123, and are symmetrical about the vertical reference plane.

[0083] In this way, while the tooth surface is cleaned through the brush clusters 2 in the first brush hole 121, the second brush hole 122 and the third brush hole 123, the tooth gaps can be cleaned through the brush clusters 2 in the ninth brush hole 127 and the tenth brush hole 128, so that all parts of the teeth can be effectively cleaned.

[0084] Optionally, the ninth brush hole 127 and the tenth brush hole 128 are both in a triangular shape.

[0085] In some examples, the plurality of outer ring brush holes 11 include an eleventh brush hole 113, a twelfth brush hole 114, a thirteenth brush hole 115, and a fourteenth brush hole 116. The eleventh brush hole 113, the twelfth brush hole 114, the thirteenth brush hole 115, and the fourteenth brush hole 116 are all arc-shaped holes. The eleventh brush hole 113 and the twelfth brush hole 114 are located on either side of the ninth brush hole 127, with their inner arc edges facing each other and symmetrical along the central axis L. The thirteenth brush hole 115 and the fourteenth brush hole 116 are located on either side of the tenth brush hole 128, with their inner arc edges facing each other and symmetrical along the central axis L. The eleventh brush hole 113 and the thirteenth brush hole 115 are symmetrical about a vertical reference plane.

[0086] In this way, when the brush head vibrates along a specific direction, the brush filament clusters 2 in the ninth brush filament hole 127 and the tenth brush filament hole 128 will also swing along a specific direction, while the brush filament clusters 2 in the eleventh brush filament hole 113, the twelfth brush filament hole 114, the thirteenth brush filament hole 115 and the fourteenth brush filament hole 116 will swing in a direction different from the specific direction, thereby being able to clean the gingival sulcus, gingival pockets and interdental spaces in all directions. Even if the user does not brush his teeth in the correct way, the cleaning effect of the brush head on the gingival sulcus and interdental spaces can be guaranteed.

[0087] Optionally, the eleventh brush hole 113 and the twelfth brush hole 114 are in an eight-shape, and the thirteenth brush hole 115 and the fourteenth brush hole 116 are in an eight-shape.

[0088] Optionally, one end of the seventh brush hole 111 is opposite to the end of the eleventh brush hole 113 , the other end of the seventh brush hole 111 is opposite to the thirteenth brush hole 115 , one end of the eighth brush hole 112 is opposite to the end of the twelfth brush hole 114 , and the other end of the eighth brush hole 112 is opposite to the fourteenth brush hole 116 .

[0089] In some examples, such as Figure 1 As shown, there is a height difference h between the height of the brush filament clusters 2 protruding from the brush head body 1 in the multiple outer circle brush filament holes 11 and the height of the brush filament clusters 2 protruding from the brush head body 1 in the multiple inner circle brush filament holes 12, 1mm≤h≤5mm.

[0090] Medically, for an adult, the depth of the gingival sulcus is typically 0 to 3 mm. By creating a certain height difference between the brush filament cluster 2 in the outer ring of brush holes 11 and the brush filament cluster 2 in the inner ring of brush holes 12, the brush filament cluster 2 in the outer ring of brush holes 11 can penetrate deep into the gingival sulcus. Setting 1mm≤h≤5mm allows the brush filament cluster 2 in the outer ring of brush holes 11 to fit the tooth surface when cleaning the gingival sulcus and interdental spaces, thereby also effectively cleaning the pressed surface. As a result, the brush head has excellent fit with both the tooth surface and the gum line, enabling comprehensive oral care even if the user does not brush their teeth in a standardized manner.

[0091] Optionally, h=2mm, 2.5mm or 3mm.

[0092] In some examples, the sum of the cross-sectional areas of all brush filaments in all brush filament clusters 2 is S3, the sum of the cross-sectional areas of all brush filament holes is S4, and 0.55≤S3:S4≤0.65.

[0093] If the ratio of S3 to S4 is too small, the filaments in the filament cluster 2 will be too sparse, resulting in too few filaments and making it difficult to ensure the brush head's cleaning effect on the teeth. If the ratio of S3 to S4 is too large, the filaments in the filament cluster 2 will be too dense, which will be difficult to bend and make it difficult to ensure the brush head's cleaning effect on the teeth. A value of 0.55≤S3:S4≤0.65 can effectively ensure the brush head's cleaning effect on the teeth.

[0094] Optionally, S3:S4=0.6.

[0095] In some examples, the outer surface of the brush head body 1 away from the bristle cluster 2 has soft glue.

[0096] This way, when the brush head contacts the gums or oral skin, the soft rubber provides ample cushioning, minimizing impact damage. The rubber-coated brush head effectively minimizes negative impacts on the gums and oral cavity during oral cleaning. Furthermore, the rubber coating of the brush head contacts the buccal mucosa, effectively alleviating friction and creating a comfortable brushing experience.

[0097] In some examples, such as Figure 3 As shown, the brush head body 1 also includes a plurality of bristle planting pieces, and the brush wire holes are arranged in the bristle planting pieces. Among them, the plurality of bristle planting pieces include a first bristle planting piece 31, a second bristle planting piece 32 and a third bristle planting piece 33, and at the same time, the plurality of bristle planting pieces include a first bristle planting piece 31, a second bristle planting piece 32 and a third bristle planting piece 33 Figure 2It can be found that the first brush hole 121, the second brush hole 122, the third brush hole 123, the fourth brush hole 124, the fifth brush hole 125, the sixth brush hole 126, the seventh brush hole 111 and the eighth brush hole 112 are all located in the first bristle implantation piece 31, the ninth brush hole 127, the eleventh brush hole 113 and the twelfth brush hole 114 are all located in the second bristle implantation piece 32, and the tenth brush hole 128, the thirteenth brush hole 115 and the fourteenth brush hole 116 are all located in the third bristle implantation piece 33.

[0098] Optionally, the brush head body 1 is a split structure, and multiple bristle implants are glued together with other structures to obtain the brush head body 1, so that it is easy to open the brush wire holes, so as to improve the production efficiency of the brush head.

[0099] Based on the same concept, an embodiment of the present disclosure also provides an electric toothbrush, which includes the brush head mentioned above.

[0100] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0101] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the techniques, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary, rather than as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0102] In the description of the present disclosure, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present disclosure and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present disclosure; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0103] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0104] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this disclosure.

[0105] The foregoing description is merely a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present disclosure shall be included within the scope of protection of the present disclosure.

Claims

1. A brush head, characterized in that: The brush head comprises a brush head body (1) and a plurality of brush filament clusters (2); The brush head body (1) has a plurality of brush holes, each of which is fixed with the brush cluster (2), the plurality of brush holes including a plurality of outer ring brush holes (11) and a plurality of inner ring brush holes (12), the plurality of outer ring brush holes (11) being distributed around the periphery of the plurality of inner ring brush holes (12), the plurality of inner ring brush holes (12) including a first brush hole (121), a second brush hole (122) and a third brush hole (123), the first brush hole (121) and the second brush hole (122) being symmetrical about the central axis (L) of the brush head body (1), the first brush hole (121) and the second brush hole (122) being arc-shaped holes, and the inner edges of the arcs being opposite, the third brush hole (123) being located between the first brush hole (121) and the second brush hole (122), and being located on the central axis (L), and being symmetrical about the central axis (L).

2. The brush head according to claim 1, characterized in that The first brush hole (121) has a first straight section (1211) and a first curved section (1212) connected to each other, the first straight section (1211) and the central axis (L) form a preset angle α, α≤30°, and the first curved section (1212) extends from the first straight section (1211) toward the second brush hole (122); The second brush hole (122) comprises a second straight section (1221) and a second curved section (1222) connected to each other, the second straight section (1221) and the central axis (L) forming a preset angle β, β≤30°, and the second curved section (1222) extending from the second straight section (1221) towards the first brush hole (121).

3. The brush head according to claim 2, characterized in that The third brush hole (123) is located between the first straight section (1211) and the second straight section (1221).

4. The brush head according to claim 1, characterized in that The third brush hole (123) has a dimension a in the length direction and a dimension b in the width direction, 1mm≤a≤10mm, 1mm≤b≤10mm, the length direction is the extension direction of the central axis (L), and the width direction is perpendicular to the length direction.

5. The brush head according to claim 1, characterized in that The plurality of inner ring brush holes (12) further include a fourth brush hole (124), a fifth brush hole (125) and a sixth brush hole (126); The fourth brush hole (124) is adjacent to the first brush hole (121) and is symmetrical to the first brush hole (121) about a plane perpendicular to the central axis (L); The fifth brush hole (125) is adjacent to the second brush hole (122) and is symmetrical to the second brush hole (122) about the plane; The sixth brush hole (126) is adjacent to the third brush hole (123) and is symmetrical to the third brush hole (123) about the plane.

6. The brush head according to claim 5, characterized in that The distance between the third brush hole (123) and the sixth brush hole (126) is c, 0.6 mm ≤ c ≤ 2 mm.

7. The brush head according to claim 5, characterized in that The sum of the cross-sectional areas of the first brush hole (121), the second brush hole (122), the third brush hole (123), the fourth brush hole (124), the fifth brush hole (125) and the sixth brush hole (126) is S1, and the sum of the cross-sectional areas of all the brush holes is S2, 0.4≤S1:S2≤0.

55.

8. The brush head according to claim 5, characterized in that The plurality of outer ring brush holes (11) include a seventh brush hole (111) and an eighth brush hole (112); The seventh brush hole (111) is located on a side of the first brush hole (121) and the fourth brush hole (124) away from the central axis (L), the eighth brush hole (112) is located on a side of the second brush hole (122) and the sixth brush hole (126) away from the central axis (L), and the seventh brush hole (111) and the eighth brush hole (112) are symmetrical about the central axis (L).

9. The brush head according to claim 1, characterized in that The plurality of inner ring brush holes (12) further include a ninth brush hole (127) and a tenth brush hole (128); The ninth brush hole (127) and the tenth brush hole (128) are located on the central axis (L), the ninth brush hole (127) is located on one side of the first brush hole (121), and the tenth brush hole (128) is located on the other side of the first brush hole (121), and are symmetrical about a plane perpendicular to the central axis (L).

10. The brush head according to claim 9, characterized in that The plurality of outer ring brush holes (11) include an eleventh brush hole (113), a twelfth brush hole (114), a thirteenth brush hole (115) and a fourteenth brush hole (116), and the eleventh brush hole (113), the twelfth brush hole (114), the thirteenth brush hole (115) and the fourteenth brush hole (116) are all arc-shaped holes; The eleventh brush hole (113) and the twelfth brush hole (114) are respectively located on both sides of the ninth brush hole (127), and their arc inner edges are opposite to each other, and are symmetrical along the central axis (L); the thirteenth brush hole (115) and the fourteenth brush hole (116) are respectively located on both sides of the tenth brush hole (128), and their inner arc edges are opposite to each other, and are symmetrical along the central axis (L); the eleventh brush hole (113) and the thirteenth brush hole (115) are symmetrical about a plane perpendicular to the central axis (L).

11. The brush head according to claim 1, characterized in that The height of the brush filament clusters (2) in the plurality of outer ring brush filament holes (11) protruding from the brush head body (1) and the height of the brush filament clusters (2) in the plurality of inner ring brush filament holes (12) protruding from the brush head body (1) have a height difference h, 1mm≤h≤5mm.

12. The brush head according to claim 1, characterized in that The sum of the cross-sectional areas of all brush filaments in all brush filament clusters (2) is S3, and the sum of the cross-sectional areas of all brush filament holes is S4, 0.55≤S3:S4≤0.

65.

13. An electric toothbrush, characterized in that: The electric toothbrush comprises the brush head according to any one of claims 1 to 12.

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