Electric toothbrush head and electric toothbrush

Abstract

Provided is an electric toothbrush head (100), comprising bristles (1101), a brush plate (11), and a deformation portion (13). The brush plate (11) comprises multiple bristle implantation sections (111) and connecting sections (113). The deformation portion (13) envelops a second surface (102) and a peripheral side surface (103) of the brush plate (11). The deformation portion (13) also fills gaps (104) formed between adjacent bristle implantation sections (111) and envelops the connecting sections (113). The deformation portion (13) is a soft rubber structure formed on the brush plate (11).

Description

Electric toothbrush heads and electric toothbrushes

[0001] Priority information

[0002] This application claims priority and benefits of patent applications with patent application numbers 2024202315931 and 2024202315772 filed with the State Intellectual Property Office of China on January 30, 2024, and the entire text of which is incorporated herein by reference. Technical Field

[0003] The present application relates to the field of cleaning technology, and more specifically, to an electric toothbrush head and an electric toothbrush. Background Art

[0004] An electric toothbrush is an electronic device that cleans the oral cavity. During operation, the handle drives the brush head to vibrate, cleaning the surfaces and crevices of the teeth. Current electric toothbrush heads are often covered with a soft rubber structure to prevent the brush head from colliding with the teeth. However, this rubber structure is typically applied to the brush plate, making it susceptible to detachment. Summary of the Invention

[0005] Embodiments of the present application provide an electric toothbrush head and an electric toothbrush.

[0006] The electric toothbrush head of the first aspect of the embodiment of the present application includes bristles, a brush plate and a deformation part. The brush plate includes a first surface and a second surface opposite to each other in the thickness direction, and a peripheral side surface connected to the first surface and the second surface respectively. The brush plate is provided with a bristle planting hole, and the bristles are arranged in the bristle planting hole and extend from the first surface. The brush plate also includes a plurality of bristle planting parts and a connecting part, and gaps are formed between adjacent bristle planting parts. At least part of the connecting part is arranged in the gap and is used to connect adjacent bristle planting parts. The deformation part is covered on the second surface and the peripheral side surface, and the deformation part also fills the gap and wraps the connecting part.

[0007] In some embodiments, the first surface is convex relative to the deformation portion.

[0008] In some embodiments, the peripheral side surface includes an inclined surface segment located outside the deformation portion; the angle between the inclined surface segment and the thickness direction of the electric toothbrush head is in the range of [20°, 30°].

[0009] In some embodiments, the deformable portion includes a first side and a second side opposite to each other, the first side faces the first surface, and the first side of the deformable portion is provided with a curved surface, which is connected to the inclined surface segment.

[0010] In some embodiments, in the thickness direction of the electric toothbrush head, the depth of the hair transplantation hole is greater than or equal to 3.5 mm; the distance between the bottom wall of the hair transplantation hole and the second surface of the brush plate is greater than or equal to 0.8 mm.

[0011] In some embodiments, the wall thickness of the hair implantation pore is greater than or equal to 0.8 mm.

[0012] In some embodiments, each of the hair-implanting portions is provided with the hair-implanting holes, and the deformation portion is configured to wrap the bottom and sidewalls of each of the hair-implanting portions and fill the gaps between adjacent hair-implanting portions.

[0013] In certain embodiments, along the thickness direction of the electric toothbrush head, the thickness of the connecting portion is smaller than the thickness of the hair-planting portion, so that the deformation portion fills between adjacent hair-planting portions and covers the connecting portion.

[0014] In certain embodiments, in the thickness direction of the electric toothbrush head, the surface of the connecting portion away from the bristles is flush with the second surface; and the thickness of the connecting portion is greater than or equal to 1 mm.

[0015] In some embodiments, the electric toothbrush head further includes a supporting portion and a mounting portion, wherein the supporting portion is disposed on the second surface; one end of the supporting portion is connected to the hair planting portion and / or the connecting portion, and the other end of the supporting portion is connected to the mounting portion.

[0016] In some embodiments, a gap is provided between the mounting portion and the hair-implanting portion; the deformable portion is combined with at least one of the hair-implanting portion, the connecting portion, the supporting portion, and the mounting portion to form at least one of the following connections:

[0017] The deformable portion wraps around the bottom and side of the hair-implanting portion;

[0018] The deformation portion covers the mounting portion;

[0019] The deformable portion fills the gap between the mounting portion and the hair implantation portion; and

[0020] The deformation portion fills the gap between adjacent hair-implanting portions and wraps the bottom and side portions of the connecting portion.

[0021] In some embodiments, in the width direction of the electric toothbrush head, the width of the support portion and / or the mounting portion is smaller than the width of the brush plate.

[0022] In some embodiments, in the width direction of the electric toothbrush head, the width of the support portion is less than or equal to the width of the mounting portion.

[0023] In some embodiments, the support portion includes multiple support portions, and the multiple support portions are arranged in sequence in the length direction of the electric toothbrush head; in the length direction of the electric toothbrush head, the mounting portion is connected to at least the support portion closest to the side edge of the brush plate.

[0024] In some embodiments, the brush plate has a central axis along the length direction of the electric toothbrush head, the peripheral side surface includes a plurality of discontinuous sub-side surfaces, and the distances of the plurality of sub-side surfaces from the central axis are at least partially different. In the width direction of the electric toothbrush head, the width of the deformation portion filled in the gap is greater than the width of the deformation portion wrapped in the sub-side surface.

[0025] In the above-mentioned electric toothbrush head, the deformation part is a soft rubber structure formed on the brush plate. The deformation part can fill the gaps between the bristle parts of the brush plate and cover the second surface and the peripheral side surface of the brush plate. Therefore, the deformation part is not easy to fall off the brush plate, and the deformation part is embedded in the brush plate, which further improves the soft rubber shock-absorbing effect of the brush plate.

[0026] The electric toothbrush head of the second aspect of the embodiment of the present application includes bristles, a plurality of hair-planting parts, a connecting part and a supporting part. The plurality of hair-planting parts are spaced apart from each other, and the hair-planting parts include a first side and a second side opposite to each other in the thickness direction of the electric toothbrush head. The hair-planting parts are also provided with hair-planting holes, and the bristles are arranged in the hair-planting holes and extend from the first side of the hair-planting parts. The connecting part is arranged between adjacent hair-planting parts and is used to connect adjacent hair-planting parts. The supporting part is arranged on the second side of the hair-planting part, and the supporting part is connected to at least the hair-planting part; when the hair-planting part is subjected to force, the connecting part deforms.

[0027] In some embodiments, the hair implantation portion includes a first hair implantation portion and a second hair implantation portion, the first hair implantation portion is connected to the support portion, the second hair implantation portion is spaced apart from the support portion, and the first hair implantation portion and the second hair implantation portion are connected via the connection portion.

[0028] In some embodiments, in the length direction of the electric toothbrush head, the second hair-planting portion includes at least two, and the first hair-planting portion is provided between the at least two second hair-planting portions.

[0029] In some embodiments, in the length direction of the electric toothbrush head, the first hair-planting parts include at least two, and the supporting parts include at least two; at least two of the supporting parts are respectively connected to at least two of the first hair-planting parts, and the second hair-planting part is arranged on any side of the center line of at least two of the supporting parts in the width direction of the electric toothbrush head.

[0030] In some embodiments, the support portion is further at least partially connected to the connecting portion connected to the second hair-implanted portion.

[0031] In some embodiments, the electric toothbrush head includes a first area and a second area arranged around the first area, the hair-planting portion in the first area is connected to the supporting portion to form a hard support, and the hair-planting portion in the second area is connected to the hair-planting portion in the first area via the connecting portion to form a soft support.

[0032] In certain embodiments, adjacent hair-planting portions are spaced apart along the thickness direction of the electric toothbrush head, and the thickness of the connecting portion is smaller than the thickness of the hair-planting portion.

[0033] In certain embodiments, along the thickness direction of the electric toothbrush head, a surface of the connecting portion facing the supporting portion is flush with the second surface of the hair-planting portion.

[0034] In some embodiments, the hair implanting portion, the connecting portion, and the supporting portion are an integrally formed structure.

[0035] In some embodiments, the electric toothbrush head further comprises a deformable portion that is deformable under force, and the deformable portion is combined with at least one of the hair-planting portion, the connecting portion and the supporting portion to support and / or protect the portion combined with the deformable portion.

[0036] In some embodiments, the hair implantation portion also includes a peripheral side surface respectively connected to the first surface of the hair implantation portion and the second surface of the hair implantation portion, the deformation portion wraps the second surface of the hair implantation portion and at least a portion of the peripheral side surface of the hair implantation portion, and the top of the hair implantation portion protrudes from the deformation portion; the deformation portion is also used to fill the gap between adjacent hair implantation portions.

[0037] In the above-mentioned electric toothbrush head, during the use of the electric toothbrush head, the bristles will be subjected to pressure from the part to be cared for (i.e., structures in the oral cavity such as teeth). At this time, the bristles will transmit external force to the hair-planting part, so that the connecting part connected to the hair-planting part is deformed by force. When the connecting part is deformed by force, adjacent hair-planting parts will move away from or approach each other, so that the distance between adjacent hair-planting parts changes. At this time, the bristles provided on the hair-planting part will fit on the surface of the teeth in contact with it and in the gaps between the teeth. Therefore, when the electric toothbrush head vibrates, the vibrating bristles clean the surface of the teeth and the gaps between the teeth more fully, and the cleaning effect is better.

[0038] The electric toothbrush of the embodiment of the present application includes the electric toothbrush head and the brush handle described in any one of the above embodiments, and the electric toothbrush head is installed on the brush handle.

[0039] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0041] FIG1 is a perspective schematic diagram of an electric toothbrush head according to certain embodiments of the present application;

[0042] FIG2 is a perspective schematic diagram of a partial structure of the electric toothbrush head shown in FIG1 ;

[0043] FIG3 is an exploded schematic diagram of a partial structure of an electric toothbrush head according to certain embodiments of the present application;

[0044] FIG4 is a schematic plan view of a partial structure of an electric toothbrush head according to some embodiments of the present application;

[0045] FIG5 is a schematic cross-sectional view of a partial structure of an electric toothbrush head according to certain embodiments of the present application;

[0046] FIG6 is a schematic cross-sectional view of a partial structure of an electric toothbrush head according to other embodiments of the present application;

[0047] FIG7 is a cross-sectional schematic diagram of a partial structure of an electric toothbrush head according to some other embodiments of the present application;

[0048] FIG8 is a schematic plan view of a partial structure of an electric toothbrush head according to some embodiments of the present application;

[0049] FIG9 is a schematic plan view of a partial structure of an electric toothbrush head according to certain embodiments of the present application;

[0050] FIG10 is a perspective schematic diagram of an electric toothbrush according to certain embodiments of the present application.

[0051] Explanation of the main component symbols: Electric toothbrush 1000; electric toothbrush head 100; brush handle 300; brush body 10; rod body 30; length direction X; width direction Y; thickness direction Z; center axis A; depth H1 of the hair transplantation hole; distance H2 between the bottom wall of the hair transplantation hole and the second surface of the brush plate; wall thickness H3 of the hair transplantation hole; thickness H4 of the connecting part; thickness H5 of the hair transplantation part; width D1 of the support part; width D2 of the mounting part; width D3 of the brush plate; distance L1 of the sub-side surface compared to the center axis; width of the deformation part filled in the gap L2; width L3 of the deformation portion wrapped around the sub-side surface; brush plate 11; bristles 1101; first surface 101; second surface 102; peripheral side surface 103; first area 105; second area 106; inclined section 1031; sub-side surface 1033; gap 104; hair implantation portion 111; first hair implantation portion 1111; second hair implantation portion 1113; connecting portion 113; hair implantation hole 115; deformation portion 13; first side 131; second side 133; arc surface 135; support portion 15; mounting portion 17. DETAILED DESCRIPTION

[0052] An electric toothbrush is an electronic device that can clean the oral cavity. During operation, the brush handle drives the electric toothbrush head to vibrate to clean the surface and gaps of the teeth. Current electric toothbrush heads are often coated with a soft rubber structure to prevent the electric toothbrush head from colliding with the teeth. However, the soft rubber structure is usually coated on the surface of the brush plate and is easily detached from the brush plate. To address this issue, an embodiment of the present application provides an electric toothbrush head 100 (shown in FIG. 1 ) and an electric toothbrush 1000 (shown in FIG. 10 ).

[0053] Please refer to Figures 1 to 3. The electric toothbrush head 100 of the present application includes bristles 1101, a brush plate 11 and a deformation portion 13. The brush plate 11 includes a first surface 101 and a second surface 102 opposite to each other in the thickness direction Z, and a peripheral side surface 103 respectively connected to the first surface 101 and the second surface 102. The brush plate 11 is provided with a bristle planting hole 115, and the bristles 1101 are arranged in the bristle planting hole 115 and extend from the first surface 101. In conjunction with Figure 5, the brush plate 11 also includes a plurality of bristle planting portions 111 and a connecting portion 113. A gap 104 is formed between adjacent bristle planting portions 111. At least part of the connecting portion 113 is arranged in the gap 104 and is used to connect adjacent bristle planting portions 111. The deformation portion 13 is covered on the second surface 102 and the peripheral side surface 103. The deformation portion 13 also fills the gap 104 and wraps the connecting portion 113.

[0054] The bristles 1101 are a structure for cleaning and / or caring for the teeth, gums or inner walls of the oral cavity. Each bristle 1101 may include a plurality of brush filaments. The material of the bristles 1101 includes, but is not limited to, nylon, polyamide or silicone. When the material of the bristles 1101 is a hard material such as nylon or polyamide, the free end of the bristles 1101 can contact the tooth surface and clean the teeth and the gaps between the teeth. When the material of the bristles 1101 is a flexible material such as silicone, the free end of the bristles 1101 can contact the tooth surface to perform polishing-like care on the tooth surface, and the free end of the bristles 1101 can also be used to clean parts that are easily damaged, such as the gums or inner walls of the oral cavity, so that the cleaning effect of the electric toothbrush head 100 is better without causing damage to the user.

[0055] In the electric toothbrush head 100 of the present application, the deformable portion 13 is a soft rubber structure formed on the brush plate 11. The deformable portion 13 can fill the gap 104 between the bristle-planted portion 111 of the brush plate 11 and cover at least part of the second surface 102 and the peripheral side surface 103 of the brush plate 11, thereby preventing collisions between the bristle-planted portion 111 and the area to be cared for. Furthermore, the deformable portion 13 is not easily detached from the brush plate 11, and there is no clear boundary between the deformable portion 13 and the brush plate 11, so it is not easy to accumulate dirt.

[0056] In addition, the brush plates of current electric toothbrushes are mostly integral without gaps, so the brush plates have the same effect on transmitting vibrations to the bristles mounted thereon. Since the tooth surface to be cleaned has many irregularities, the entire brush plate cannot transmit different vibration amplitudes to the different contact positions of the bristles, resulting in poor cleaning effect. To solve this problem, the present application provides an electric toothbrush head 100 (shown in FIG1 ) and an electric toothbrush 1000 (shown in FIG10 ).

[0057] Please refer to Figures 1 to 3 again. The electric toothbrush head 100 of the present application includes bristles 1101, multiple hair-planting parts 111, a connecting part 113 and a supporting part 15. The multiple hair-planting parts 111 are spaced apart from each other. The hair-planting parts 111 include a first surface 101 and a second surface 102 opposite to each other in the thickness direction Z of the electric toothbrush head 100. The hair-planting parts 111 are also provided with hair-planting holes 115. The bristles 1101 are provided in the hair-planting holes 115 and extend from the first surface 101 of the hair-planting parts 111. The connecting part 113 is provided between adjacent hair-planting parts 111 and is used to connect adjacent hair-planting parts 111. The supporting part 15 is provided on the second surface 102 of the hair-planting part 111. The supporting part 15 is connected to at least the hair-planting part 111; when the hair-planting part 111 is subjected to force, the connecting part 113 is deformed.

[0058] In the electric toothbrush head 100 of the present application, the bristles 1101 will be subjected to pressure from the part to be cared for (i.e., structures in the oral cavity such as teeth). At this time, the bristles 1101 will transmit external force to the hair-planting part 111, so that the connecting part 113 connected to the hair-planting part 111 is deformed by force. When the connecting part 113 is deformed by force, adjacent hair-planting parts 111 will move away from or approach each other, so that the distance between adjacent hair-planting parts 111 changes. At this time, the bristles 1101 provided on the hair-planting part 111 will fit on the surface of the teeth in contact therewith and in the gaps between the teeth. Therefore, when the electric toothbrush head 100 vibrates, the vibrating bristles 1101 clean the surface of the teeth and the gaps between the teeth more fully, and the cleaning effect is better.

[0059] The electric toothbrush head 100 will be further described below with reference to the accompanying drawings.

[0060] Please refer to Figures 1 to 3. In some embodiments, the electric toothbrush head 100 includes a brush body 10 and a rod body 30 connected to each other. The bristles 1101, the brush plate 11 and the deformation part 13 are all partial structures of the brush body 10. The brush plate 11 is roughly a plate-shaped structure, and the rod body 30 is roughly a cylindrical structure. The shape of the cross section of the rod body 30 includes but is not limited to a perfect circle, an ellipse or a polygon. The rod body 30 is connected to the brush plate 11. In some embodiments, the rod body 30 and the brush plate 11 are integrally formed. The materials of the rod body 30 and the brush plate 11 can be the same or different, which is not limited here. In other embodiments, the rod body 30 and the brush plate 11 are separately formed, and the rod body 30 and the brush plate 11 can be connected by a non-detachable method such as gluing, hot melt connection or interference connection, or by a detachable method such as snap connection, threaded connection or bolt connection, which is not limited here. The length direction X of the electric toothbrush head 100 can be either the direction from the brush plate 11 to the rod 30 or the direction from the rod 30 to the brush plate 11. Along the length direction X of the electric toothbrush head 100, the brush plate 11 includes opposing first and second ends. The first end of the brush plate 11 is distal from the rod 30, while the second end of the brush plate 11 is proximal to the rod 30. The width direction Y of the electric toothbrush head 100 is perpendicular to the length direction X of the electric toothbrush head 100. Along the width direction Y of the electric toothbrush head 100, the brush plate 11 includes opposing first and second sides, both of which are part of the peripheral side surface 103 of the brush plate 11. The thickness direction Z of the electric toothbrush head 100 is perpendicular to both the length direction X and the width direction Y of the electric toothbrush head 100. The thickness direction Z of the electric toothbrush head 100 can be either the direction from the first surface 101 of the brush plate 11 to the second surface 102 of the brush plate 11, or the direction from the second surface 102 of the brush plate 11 to the first surface 101 of the brush plate 11. The brush plate 11 has a central axis A passing through the geometric center of the brush plate 11, and the direction of the central axis A of the brush plate 11 is parallel to the length direction X of the electric toothbrush head 100.

[0061] Please refer to Figure 4. The hair-planting portion 111, the connecting portion 113, and the supporting portion 15 are all partial structures of the brush body 10. Furthermore, in some embodiments, the hair-planting portion 111, the connecting portion 113, and the supporting portion 15 are separately molded structures. The hair-planting portion 111, the connecting portion 113, and the supporting portion 15 can be fixed to each other by non-detachable means such as gluing, hot-melt connection, or interference connection, or can be connected to each other by detachable means such as snap connection, threaded connection, or bolt connection, which is not limited here. In other embodiments, the hair-planting portion 111, the connecting portion 113, and the supporting portion 15 are an integrally molded structure. The integrally formed hair-planting portion 111, the connecting portion 113 and the supporting portion 15 can form a stable connection. On the one hand, it can avoid the presence of gaps at the connections between the hair-planting portion 111, the connecting portion 113 and the supporting portion 15, which may cause dirt deposition. On the other hand, it can also avoid the separation of the connections between the hair-planting portion 111, the connecting portion 113 and the supporting portion 15 when subjected to force, which may cause damage to the electric toothbrush head 100, thereby extending the service life of the electric toothbrush head 100.

[0062] Please refer to Figures 2 to 4. In some embodiments, the bristle portion 111 is a structure connected to the bristles 1101. In some embodiments, the bristle portion 111 and the bristles 1101 are integrally formed. In other embodiments, the bristle portion 111 and the bristles 1101 are separately formed. One end of the bristle 1101 extends into the bristle portion 111 and is installed on the bristle portion 111, and the other end of the bristle 1101 is a free end located on the side where the first surface 101 of the brush plate 11 is located. The extension direction of the bristles 1101 can be parallel to the thickness direction Z of the electric toothbrush head 100, or can be inclined relative to the thickness direction Z of the electric toothbrush head 100, and there is no limitation here.

[0063] Specifically, please refer to Figures 5 and 9. Each hair-planting portion 111 is roughly a block-shaped structure. On a certain cross-section formed along the width direction Y of the electric toothbrush head 100, the outer contour shape of the cross-section of each hair-planting portion 111 can be the same or different, and there is no limitation here. Each hair-planting portion 111 is provided with a hair-planting hole 115, and each hair-planting hole 115 is provided with bristles 1101. The hair-planting hole 115 is an opening on the hair-planting portion 111 for installing the bristles 1101. The hair-planting hole 115 can be formed by passing through the hair-planting portion 111, or it can be formed by being recessed from the first surface 101 of the hair-planting portion 111 to the second surface 102 of the hair-planting portion 111. A gap 104 is formed between adjacent hair-planting portions 111, and the connecting portion 113 can also connect adjacent hair-planting portions 111. When the hair-planting portion 111 is subjected to force, the connecting portion 113 is bent under the force, so that the spacing between each adjacent hair-planting portion 111 will also change. The deformable portion 13 can fill the gap 104 between adjacent hair-planting portions 111 and support the connecting portion 113 between each hair-planting portion 111 and adjacent hair-planting portions 111. Each hair-planting portion 111 can be connected to the deformable portion 13, and when the deformable portion 13 wraps around the bottom and sidewall of each hair-planting portion 111 and fills the gap 104 between adjacent hair-planting portions 111, it can prevent the surface of the electric toothbrush head 100 from being uneven, and can also prevent dirt from remaining on the electric toothbrush head 100 and affecting the normal use of the electric toothbrush head 100.

[0064] More specifically, in some embodiments, in the thickness direction Z of the electric toothbrush head 100, the depth H1 of the bristle hole 115 is greater than or equal to 3.5 mm. For example, it can be 3.5 mm, 4.0 mm, 4.5 mm or others. The bristle hole 115 can be used for injection molding to form the bristles 1101 or to connect the formed bristles 1101. When the depth H1 of the bristle hole 115 is less than 3.5 mm, the contact area at the connection between the bristles 1101 and the brush plate 11 is too small. On the one hand, the bristles 1101 are difficult to be injection molded into the bristle hole 115. On the other hand, the bristles 1101 are also easy to fall off from the bristle hole 115. When the depth H1 of the bristle hole 115 is greater than or equal to 3.5 mm, the connection between the bristles 1101 and the brush plate 11 is relatively stable and not easy to fall off.

[0065] More specifically, referring to FIG6 , in some embodiments, the distance H2 between the bottom wall of the bristle hole 115 and the second surface 102 of the brush plate 11 is greater than or equal to 0.8 mm, and illustratively, it can be 0.8 mm, 0.9 mm, 1.0 mm, 1.2 mm, 1.5 mm, etc. The distance H2 between the bottom wall of the bristle hole 115 and the second surface 102 of the brush plate 11 is the thickness of the brush plate 11 at the position corresponding to the bristle hole 115. When the distance H2 between the bottom wall of the bristle hole 115 and the second surface 102 of the brush plate 11 is less than 0.8 mm, the thickness of the brush plate 11 at the position corresponding to the bristle hole 115 is too thin, the bristles 1101 are difficult to fix on the brush plate 11, and the brush plate 11 is prone to breakage during processing. When the distance H2 between the bottom wall of the implanting hole 115 and the second surface 102 of the brush plate 11 is greater than or equal to 0.8 mm, the connection depth between the brush plate 11 and the bristles 1101 is moderate, the bristles 1101 will not fall off the brush plate 11, and the brush plate 11 will not be damaged.

[0066] More specifically, in some embodiments, the wall thickness H3 of the bristle hole 115 is greater than or equal to 0.8 mm, and can be, for example, 0.8 mm, 0.9 mm, 1.0 mm, 1.2 mm, 1.5 mm, etc. When the wall thickness H3 of the bristle hole 115 is greater than or equal to 0.8 mm, the sidewall thickness of the bristle hole 115 is moderate, and it is not easy to form holes or grooves during the manufacturing process. The bristles 1101 are easily formed or installed in the bristle hole 115.

[0067] More specifically, referring to FIG9 , in some embodiments, the electric toothbrush head 100 may further include a first region 105 and a second region 106 arranged around the first region 105. The support portion 15 is a structure capable of supporting the hair-planting portion 111. The first region 105 refers to a partial region where the hair-planting portion 111 is directly connected to the support portion 15. The hair-planting portion 111 in the first region 105 is connected to the support portion 15 to form a rigid support. When the hair-planting portion 111 in the first region 105 is subjected to force, the support portion 15 connected to the hair-planting portion 111 can support the hair-planting portion 111, so that the hair-planting portion 111 in the first region 105 will not shake or swing relative to the support portion 15 after being subjected to force, and the connection between the hair-planting portion 111 and the support portion 15 is more stable. The second area 106 refers to a partial area where the hair-planting portion 111 is not directly connected to the support portion 15. The hair-planting portion 111 in the second area 106 is connected to the hair-planting portion 111 in the first area 105 via the connecting portion 113 to form a soft support. The hair-planting portion 111 in the second area 106 can only be connected to the hair-planting portion 111 in the first area 105 via the connecting portion 113. Therefore, when the hair-planting portion 111 in the second area 106 is subjected to force, the connecting portion 113 is deformed by the force, and the hair-planting portion 111 in the second area 106 will tilt, shake or swing relative to the hair-planting portion 111 in the first area 105, causing the electric toothbrush head 100 to partially deform.

[0068] Furthermore, referring to FIG. 5 , in some embodiments, the hair implantation portion 111 may include a first hair implantation portion 1111 and a second hair implantation portion 1113. The first hair implantation portion 1111 can be connected to the support portion 15, and the second hair implantation portion 1113 can be spaced apart from the support portion 15. Specifically, the hair implantation portion 111 disposed within the first region 105 is the first hair implantation portion 1111, and the hair implantation portion 111 disposed within the second region 106 is the second hair implantation portion 1113. A gap 104 is defined between the first hair implantation portion 1111 and the second hair implantation portion 1113, and the first hair implantation portion 1111 and the second hair implantation portion 1113 are connected via a connection portion 113. When the bristles 1101 are subjected to force and the connecting part 113 is deformed, the second bristle part 1113 can move relative to the first bristle part 1111 to increase the distance between the first bristle part 1111 and the second bristle part 1113. At this time, the electric toothbrush head 100 will be deformed, and the bristles 1101 provided on the first bristle part 1111 and the second bristle part 1113 will be offset to contact different positions of the part to be cared for, so as to achieve cleaning of various positions of the part to be cared for.

[0069] Specifically, referring to Figure 5 , in some embodiments, along the length direction X of the electric toothbrush head 100, the second bristle-planted portions 1113 include at least two, and the first bristle-planted portion 1111 is disposed between the at least two second bristle-planted portions 1113. When the first bristle-planted portion 1111 is disposed between the at least two second bristle-planted portions 1113, the at least two second bristle-planted portions 1113 may be arranged along the length direction X of the electric toothbrush head 100. The first bristle-planted portion 1111 is located in the middle of the electric toothbrush head 100 along the length direction X of the electric toothbrush head 100 and is connected to the support portion 15. In other embodiments, along the width direction Y of the electric toothbrush head 100, the second bristle-planted portions 1113 include at least two, and the first bristle-planted portion 1111 is disposed between the at least two second bristle-planted portions 1113. When the first bristle-planted portion 1111 is disposed between the at least two second bristle-planted portions 1113, the at least two second bristle-planted portions 1113 may be arranged along the width direction Y of the electric toothbrush head 100. The first bristle-planting portion 1111 is located in the middle of the electric toothbrush head 100 along the width direction Y of the electric toothbrush head 100 and is connected to the support portion 15. When the bristles 1101 are subjected to force and the connecting portion 113 is deformed, the at least two second bristle-planting portions 1113 can move in various directions away from the first bristle-planting portion 1111 with the first bristle-planting portion 1111 as the center, so that the bristles 1101 provided on the first bristle-planting portion 1111 and the at least two second bristle-planting portions 1113 can contact different positions of the part to be cared for.

[0070] More specifically, referring to Figure 6, in some embodiments, in the length direction X of the electric toothbrush head 100, the first bristle-planting portion 1111 includes at least two, and the support portion 15 includes at least two. The at least two support portions 15 are respectively connected to the at least two first bristle-planting portions 1111, and the second bristle-planting portion 1113 is provided on either side of the line connecting the centers of the at least two support portions 15 in the width direction Y of the electric toothbrush head 100. The first bristle-planting portion 1111 can correspond to the support portion 15. When the first bristle-planting portion 1111 includes at least two, each first bristle-planting portion 1111 can be connected to the support portion 15. In this case, the at least two first bristle-planting portions 1111 can be arranged along the length direction X of the electric toothbrush head 100, and there is still at least one first bristle-planting portion 1111 provided in the middle of the electric toothbrush head 100 in the length direction X and / or in the width direction Y of the electric toothbrush head 100. The center line of at least two supporting parts 15 passes through the first bristle-planted part 1111 provided in the middle of the electric toothbrush head 100. In this case, the second bristle-planted part 1113 can be provided on either side of the center line of at least two supporting parts 15 along the width direction Y of the electric toothbrush head 100. When there are two second bristle-planted parts 1113, the two second bristle-planted parts 1113 can be provided on either side of the center line of at least two supporting parts 15 along the width direction Y of the electric toothbrush head 100.

[0071] More specifically, in some embodiments, the support portion 15 is also at least partially connected to the connecting portion 113 connected to the second hair-planting portion 1113. When the support portion 15 is connected to the connecting portion 113, when the connecting portion 113 is deformed, the support portion 15 can support the side of the connecting portion 113 away from the bristles 1101 to increase the strength of the connecting portion 113 and avoid the connecting portion 113 from breaking. Moreover, when the support portion 15 is connected to the connecting portion 113 and the hair-planting portion 111 at the same time, the contact area between the support portion 15 and the connecting portion 113 and the hair-planting portion 111 is large, the connection between the three is stable, and the electric toothbrush head 100 is not easily damaged.

[0072] Please refer to Figures 3 and 5. In some embodiments, the connecting portion 113 is a structure located in the gap 104 and can connect at least two mutually spaced bristle portions 111. The connecting portion 113 is generally a plate-like structure with a small thickness and easily bent and deformed by force. When a user uses the electric toothbrush head 100, the user will apply external force to the bristles 1101. On the one hand, the bristles 1101 will be compressed and bent, and on the other hand, the external force will be transmitted to the bristle portion 111 connected to the bristles 1101. Since adjacent bristle portions 111 are only connected to each other by the connecting portion 113, when the bristle portions 111 are subjected to force, the connecting portion 113 will bend and deform along the thickness direction Z of the electric toothbrush head 100 under the action of the external force. At this time, the size of the gap 104 between adjacent bristle portions 111 will change, causing the brush plate 11 to deform. When the deformation part 13 fills the gap 104 between adjacent hair-planting parts 111 and wraps the connecting part 113, the hair-planting part 111 and the connecting part 113 will squeeze the deformation part 13 to partially deform the deformation part 13, and the squeezed deformation part 13 can also provide support for the hair-planting part 111 and the connecting part 113 to reduce damage to the hair-planting part 111 and the connecting part 113 during use, so that the electric toothbrush head 100 can be more durable.

[0073] Please refer to Figure 7. Along the thickness direction Z of the electric toothbrush head 100, the thickness H4 of the connecting portion 113 is smaller than the thickness H5 of the hair-planting portion 111, so that the deformation portion 13 fills between adjacent hair-planting portions 111 and covers the connecting portion 113. The thickness of the connecting portion 113 refers to the distance between the two opposite sides of the connecting portion 113 along the thickness direction Z of the electric toothbrush head 100. The thickness of the hair-planting portion 111 refers to the distance between the two opposite sides of the hair-planting portion 111 along the thickness direction Z of the electric toothbrush head 100 (that is, the distance between the first surface 101 of the brush plate 11 and the second surface 102 of the brush plate 11 along the thickness direction Z of the electric toothbrush head 100). When the thickness H4 of the connecting portion 113 is smaller than the thickness H5 of the hair-planting portion 111, the connecting portion 113 is more likely to deform when subjected to force than the hair-planting portion 111. When adjacent hair-planting portions 111 are spaced apart from each other, the hair-planting portions 111 can move closer to and / or farther away from each other when the connecting portion 113 is deformed by force, so that the bristles 1101 on the hair-planting portions 111 move to different positions, thereby improving the cleaning effect of the electric toothbrush head 100. The two opposite sides of the connecting portion 113 along the thickness direction Z of the electric toothbrush head 100 will face the gap 104 between the hair-planting portions 111. The deformable portion 13 can fill the gap 104 between the hair-planting portions 111 and wrap the opposite sides of the connecting portion 113 to protect the connecting portion 113 and prevent it from breaking.

[0074] Please refer to Figure 6. In some embodiments, in the thickness direction Z of the electric toothbrush head 100, the surface of the connecting portion 113 away from the bristles 1101 is flush with the second surface 102. The thickness H4 of the connecting portion 113 is greater than or equal to 1 mm. When the surface of the connecting portion 113 facing the support portion 15 is flush with the surface where the second side 133 of the bristle-planting portion 111 is located, the side of the connecting portion 113 facing the bristles 1101 is located in the gap 104 between adjacent bristle-planting portions 111. When the bristles 1101 are subjected to force, the bristles 1101 transfer the force to the bristle-planting portion 111. At this time, the bristle-planting portion 111 can only push the connecting portion 113 to bend toward the side away from the bristles 1101, but cannot bend toward the side close to the bristles 1101. The bristles 1101 have better wrapping properties for the care portion and a better cleaning effect. When the thickness H4 of the connecting portion 113 is less than 1 mm, the connecting portion 113 is too thin and is prone to breakage when subjected to force. When the thickness H4 of the connection portion 113 is greater than or equal to 1 mm, the thickness H4 of the connection portion 113 is moderate and can be deformed when subjected to force.

[0075] In conjunction with Figure 9, in certain embodiments, the brush plate 11 has a central axis A along the length direction X of the electric toothbrush head 100, and the peripheral side surface 103 includes a plurality of discontinuous sub-side surfaces 1033. The sub-side surfaces 1033 are the sides of each bristle-planted portion 111 that are not opposite to other bristle-planted portions 111. The peripheral side surface 103 formed by the plurality of discontinuous sub-side surfaces 1033 has a plurality of recesses and a plurality of protrusions, each protrusion corresponding to a sub-side surface 1033, and each recess corresponding to a gap 104 between adjacent bristle-planted portions 111. Since each bristle-planted portion 111 is disposed at a different position, the distance L1 of the plurality of sub-side surfaces 1033 from the central axis A is at least partially different. When the deformation portion 13 covers the peripheral side surface 103, the deformation portion 13 can fill the plurality of recesses and cover the surfaces of the plurality of protrusions. Along the width direction Y of the electric toothbrush head 100, when the outer contour edge of the deformation part 13 is smooth, in the width direction Y of the electric toothbrush head 100, the width L2 of the deformation part 13 filled in the gap 104 is greater than the width L3 of the deformation part 13 wrapped in the sub-side surface 1033, that is: in the width direction Y of the electric toothbrush head 100, the thickness between the outer contour of the deformation part 13 and the multiple sub-side surfaces 1033 will be smaller than the thickness between the outer contour of the deformation part 13 and the depression. Therefore, when the brush plate 11 vibrates, the part with a larger thickness of the deformation part 13 can more effectively buffer the vibration.

[0076] Please refer to Figures 3 and 4. In some embodiments, the deformable portion 13 is generally a flexible structure that can cover the brush plate 11. The material of the deformable portion 13 includes but is not limited to silicone, rubber or soft plastic. Along the thickness direction Z of the electric toothbrush head 100, the deformable portion 13 includes a first side 131 and a second side 133 opposite to each other. The first side 131 faces the first side 101 of the brush plate 11, and the second side 133 faces the second side 102 of the brush plate 11. The deformable portion 13 can cover the second side 102 of the brush plate 11 and the peripheral side wall of the brush plate 11 so that the position where the electric toothbrush head 100 contacts the part to be cared is provided with a flexible structure to avoid collision between the brush plate 11 and the part to be cared. The deformable portion 13 can also wrap the connecting portion 113 and fill the gap 104 formed between adjacent hair-planting portions 111, so that the adjacent hair-planting portions 111 and the connecting portion 113 have flexible support, thereby improving the overall shock-absorbing effect.

[0077] Furthermore, referring to Figures 1 and 5 , in some embodiments, the first surface 101 of the brush plate 11 (the top of the bristle-planting portion 111) protrudes relative to the deformable portion 13, that is, along the thickness direction Z of the electric toothbrush head 100, the first side 131 of the deformable portion 13 is lower than the first surface 101 of the brush plate 11. Since the deformable portion 13 can be formed on the surface of the brush plate 11 by hot-melting the soft rubber material and then solidifying it again, when the first surface 101 protrudes relative to the deformable portion 13, the soft rubber material in a fluid state will not enter the bristle-planting holes 115 provided on the first surface 101 of the brush plate 11, thereby preventing the bristles 1101 from being difficult to install in the bristle-planting holes 115.

[0078] In some embodiments, the peripheral side surface 103 includes a sloped section 1031 located outside the deformable portion 13. During the process of wrapping the deformable portion 13 around the brush plate 11, the brush plate 11 needs to be placed within the mold to contact the fluid soft rubber material. The sloped section 1031 on the peripheral side surface 103 prevents collision between the brush plate 11 and the mold, making it easier to remove the brush plate 11 from the mold.

[0079] Specifically, in some embodiments, the angle between the bevel section 1031 and the thickness direction Z of the electric toothbrush head 100 is in the range of [20°, 30°]. When the angle between the bevel section 1031 and the thickness direction Z of the electric toothbrush head 100 is less than 20°, the inclination angle formed by the bevel section 1031 is too small, and there is still a risk of collision with the mold when the brush plate 11 is placed into the mold. When the angle between the bevel section 1031 and the thickness direction Z of the electric toothbrush head 100 is greater than 30°, the inclination angle formed by the bevel section 1031 is too large, so that the surface area of ​​the first surface 101 of the brush plate 11 differs too much from the surface area of ​​the second surface 102 of the brush plate 11, which affects the formation and / or installation of the bristles 1101 on the one hand, and the aesthetics of the electric toothbrush head 100 on the other hand. Therefore, when the angle between the inclined section 1031 and the thickness direction Z of the electric toothbrush head 100 is in the range of [20°, 30°], no collision will occur between the brush plate 11 and the mold, and the bristles 1101 can be smoothly formed and / or installed on the first surface 101 of the brush plate 11.

[0080] In some embodiments, the first side 131 of the deformable portion 13 is provided with a curved surface 135, which is connected to the inclined surface section 1031. In this case, the curved surface 135 of the deformable portion 13 can contact the part to be cared for (i.e., structures in the oral cavity such as teeth), thereby preventing the deformable portion 13 from falling off the brush plate 11 due to friction between the edge of the deformable portion 13 that contacts the peripheral side wall of the brush plate 11 and the part to be cared for.

[0081] Please refer to Figures 2 to 4. In some embodiments, the electric toothbrush head 100 may further include a mounting portion 17. The support portion 15 is a partial structure for connecting the brush plate 11 and the mounting portion 17. The support portion 15 is provided on the second surface 102 of the brush plate 11. One end of the support portion 15 is connected to the bristle portion 111 and / or the connecting portion 113, and the other end of the support portion 15 is connected to the mounting portion 17. When the support portion 15 is connected to the connecting portion 113, when the connecting portion 113 is deformed, the support portion 15 can support the side of the connecting portion 113 away from the bristles 1101 to increase the strength of the connecting portion 113 and prevent the connecting portion 113 from breaking. When the support portion 15 is connected to the connecting portion 113 and the bristle portion 111 at the same time, the contact area between the support portion 15 and the connecting portion 113 and the bristle portion 111 is large, the connection between the three is stable, and the electric toothbrush head 100 is not easily damaged. The mounting portion 17 is a structure that can be connected to the brush handle 300 of the electric toothbrush 1000 and transmit vibrations. The mounting portion 17 can be used to connect the brush body 10 and the rod body 30. When a gap is provided between the mounting portion 17 and the hair-planting portion 111, when the connecting portion 113 is deformed and the size of the gap 104 between adjacent hair-planting portions 111 changes, the gap between the mounting portion 17 and the hair-planting portion 111 can provide space for the hair-planting portion 111 to move, so that the bristles 1101 on the hair-planting portion 111 can move relative to the mounting portion 17. The deformable portion 13 used for protection and filling can fill the gap between the mounting portion 17 and the hair-planting portion 111 and support the connecting portion 113 to prevent the hair-planting portion 111 from being subjected to excessive force and causing the connecting portion 113 to break.

[0082] Furthermore, in certain embodiments, the support portion 15 can support the brush plate 11 and form a gap between the second surface 102 of the brush plate 11 and the mounting portion 17, and the deformable portion 13 is combined with at least one of the bristle portion 111, the connecting portion 113, the support portion 15 and the mounting portion 17 to support and / or protect the structure connected to the deformable portion 13. In some embodiments, the deformable portion 13 can wrap the bottom and side of the bristle portion 111 to avoid collision between the bristle portion 111 and the portion to be cared for. In other embodiments, the two opposite sides of the connecting portion 113 along the thickness direction Z of the electric toothbrush head 100 will face the gap 104 between the bristle portions 111, and the deformable portion 13 can contact and wrap the opposite sides of the connecting portion 113 through the gap 104 between the bristle portions 111 and the side where the second surface 102 of the brush plate 11 is located to protect the connecting portion 113 and prevent the connecting portion 113 from breaking. The deformable portion 13 covers the mounting portion 17 , fills the gap between the mounting portion 17 and the hair-planting portion 111 , fills the gap 104 between adjacent hair-planting portions 111 , and wraps the bottom and side of the connecting portion 113 .

[0083] Specifically, in some embodiments, the support portion 15 includes one, and the support portion 15 is located at the center of the brush plate 11 along the length direction X and the width direction Y of the electric toothbrush head 100 and is located on the second surface 102 of the brush plate 11. When the mounting portion 17 is connected to the support portion 15, the support portion 15 can be used to support the portion of the bristle portion 111 located at the center of the brush plate 11 and connected to or corresponding to the support portion 15. In this case, the portion of the bristle portion 111 in the center corresponding to the support portion 15 is a hard portion that is difficult to deform, and the portion of the bristle portion 111 located at other positions that is not connected to the support portion 15 is a soft portion that is easy to deform. In other embodiments, the support portion 15 includes multiple, and the multiple support portions 15 are arranged in sequence in the length direction X of the electric toothbrush head 100. In the length direction X of the electric toothbrush head 100, the brush plate 11 includes a first end and a second end opposite each other, and one end of the mounting portion 17 is located near the first end or the second end of the brush plate 11 and is connected to at least the support portion 15 closest to the side edge of the brush plate 11. Each support portion 15 can be connected to at least one bristle-planted portion 111 and / or connecting portion 113 to support the bristle-planted portion 111 and / or connecting portion 113. When the mounting portion 17 is connected to the support portion 15 at the side edge closest to the brush plate 11, the brush plate 11 can be partially offset from the mounting portion 17 along the length direction X of the electric toothbrush head 100, and the brush plate 11 partially offset from the mounting portion 17 can be used to contact an external support structure to support the brush plate 11 during the installation or formation of the bristles 1101. For example: the support portion 15 includes two, along the length direction X of the electric toothbrush head 100, one of the support portions 15 is closer to the first end of the brush plate 11 relative to the center of the brush plate 11, and the other support portion 15 is closer to the second end of the brush plate 11 relative to the center of the brush plate 11. The mounting portion 17 can be connected to at least one of the support portions 15. In this case, the two support portions 15 can be used to support a portion of the bristle-planted portion 111 located on the side where the first end of the brush plate 11 is located and connected to one of the support portions 15, and a portion of the bristle-planted portion 111 located on the side where the second end of the brush plate 11 is located and connected to the other support portion 15. In this case, the portion of the bristle-planted portion 111 located at the edge corresponding to the support portion 15 is a hard portion that is difficult to deform, and the portion of the bristle-planted portion 111 located in the center that is not connected to the support portion 15 is a soft portion that is easily deformed.

[0084] Furthermore, referring to FIG8 , in some embodiments, in the width direction Y of the electric toothbrush head 100, the width D1 of the support portion 15 is smaller than the width D3 of the brush plate 11. In other embodiments, in the width direction Y of the electric toothbrush head 100, the width D2 of the mounting portion 17 is smaller than the width D3 of the brush plate 11. In still other embodiments, both the width D1 of the support portion 15 and the width D2 of the mounting portion 17 are smaller than the width D3 of the brush plate 11. In the width direction Y of the electric toothbrush head 100, the deformation part 13 can cover the second surface 102 and the peripheral side surface 103 of the supporting part 15, the mounting part 17, the connecting part 113 and the hair-planting part 111, and when the width D1 of the supporting part 15 and / or the width D2 of the mounting part 17 are smaller than the width D3 of the brush plate 11, if the outer contour of the deformation part 13 is relatively smooth, then in the width direction Y of the electric toothbrush head 100, the thickness of the deformation part 13 corresponding to and contacting the supporting part 15 and / or the mounting part 17 will be smaller than the thickness of the deformation part 13 corresponding to and directly contacting the bottom of the hair-planting part 111. At this time, the thickness of the deformation part 13 directly contacting the hair-planting part 111 is larger, and the thickness of the deformation part 13 corresponding to and contacting the corners of the peripheral side surface 103 of the brush plate 11 is also larger, and the deformation part 13 has a better shock-absorbing effect on the brush plate 11.

[0085] Furthermore, referring to FIG8 , in certain embodiments, in the width direction Y of the electric toothbrush head 100, the width D1 of the support portion 15 is less than or equal to the width D2 of the mounting portion 17. When the width D1 of the support portion 15 is less than or equal to the width D2 of the mounting portion 17, the projection of the support portion 15 onto the brush plate 11 along the width direction Y of the electric toothbrush head 100 is completely within the projection of the mounting portion 17 onto the brush plate 11. At this time, in a cross-section formed along the width direction Y of the electric toothbrush head 100, the outer contour width of the support portion 15 is less than or equal to the outer contour width of the mounting portion 17. Along the width direction Y of the electric toothbrush head 100, the part of the mounting portion 17 directly corresponding to the brush plate 11 can be filled with the deformable portion 13. The thickness of the deformable portion 13 corresponding to the part of the mounting portion 17 directly corresponding to the brush plate 11 is greater than the thickness of the deformable portion 13 corresponding to the part of the support portion 15 directly corresponding to the brush plate 11. Compared with the solution in which the width D1 of the support portion 15 is greater than the width D2 of the mounting portion 17, the contact area between the deformable portion 13 and the brush plate 11, the support portion 15 and the mounting portion 17 is larger and the combination is tighter, so the deformable portion 13 is less likely to fall off the brush plate 11.

[0086] Please refer to FIG. 1 and FIG. 10 . The electric toothbrush 1000 of the present application includes the electric toothbrush head 100 and the brush handle 300 described in any of the above embodiments. The electric toothbrush head 100 is mounted on the brush handle 300 .

[0087] In the electric toothbrush 1000 of the present application, the deformable portion 13 is a soft rubber structure formed on the brush plate 11. The deformable portion 13 can fill the gap 104 between the bristle portions 111 and cover at least a portion of the second surface 102 and the peripheral side surface 103 of the brush plate 11, thereby preventing collisions between the bristle portions 111 and the area to be cared for. Furthermore, the deformable portion 13 is not easily detached from the brush plate 11, and there is no clear boundary between the deformable portion 13 and the brush plate 11, making it difficult for dirt to form.

[0088] Furthermore, in the electric toothbrush 1000 of the present application, the brush handle 300 is capable of vibrating and transmitting the vibrations to the bristles 1101 on the electric toothbrush head 100. When the brush body 10 is subjected to force, the connecting portion 113 is deformed by the force, causing the distance between adjacent bristle portions 111 to change. At this point, the bristles 1101 disposed on the bristle portions 111 adhere to the surfaces of the teeth in contact with them and to the gaps between the teeth. Therefore, when the electric toothbrush head 100 vibrates, the vibrating bristles 1101 more thoroughly clean the surfaces of the teeth and the gaps between the teeth, achieving a better cleaning effect.

[0089] The technical features of the above-described embodiments may be combined in any manner. To simplify the description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there are no conflicts in the combination of these technical features, they should be considered to be within the scope of this specification. Furthermore, other implementations can be derived from the above-described embodiments, allowing for structural and logical substitutions and changes without departing from the scope of this disclosure.

Claims

1. An electric toothbrush head, wherein: include: Brush bristles; A brush plate, comprising a first surface and a second surface opposite to each other in the thickness direction, and peripheral side surfaces respectively connected to the first surface and the second surface, the brush plate being provided with a hair-planting hole, the bristles being arranged in the hair-planting hole and extending from the first surface; the brush plate further comprising a plurality of hair-planting portions and connecting portions, adjacent hair-planting portions being spaced apart to form gaps, at least a portion of the connecting portions being arranged in the gaps and being used to connect adjacent hair-planting portions; and The deformable portion is covered on the second surface and the peripheral side surface, and the deformable portion is also filled in the gap and wraps the connecting portion.

2. The electric toothbrush head according to claim 1, wherein: The first surface is more convex than the deformation portion.

3. The electric toothbrush head according to claim 2, wherein: The peripheral side surface includes an inclined surface segment located outside the deformation portion; the angle between the inclined surface segment and the thickness direction of the electric toothbrush head is in the range of [20°, 30°].

4. The electric toothbrush head according to claim 3, wherein: The deformable portion includes a first side and a second side opposite to each other, the first side faces the first surface, and the first side of the deformable portion is provided with a curved surface, which is connected to the inclined surface segment.

5. The electric toothbrush head according to claim 1, wherein In the thickness direction of the electric toothbrush head, the depth of the hair planting hole is greater than or equal to 3.5 mm; the distance between the bottom wall of the hair planting hole and the second surface of the brush plate is greater than or equal to 0.8 mm.

6. The electric toothbrush head according to claim 1, wherein: The wall thickness of the hair implantation pore is greater than or equal to 0.8 mm.

7. The electric toothbrush head according to claim 1, wherein: Each of the hair-implanting portions is provided with the hair-implanting hole, and the deformation portion is configured to wrap the bottom and sidewall of each of the hair-implanting portions and fill the gaps between adjacent hair-implanting portions.

8. The electric toothbrush head according to claim 1, wherein: Along the thickness direction of the electric toothbrush head, the thickness of the connecting portion is smaller than the thickness of the hair-planting portion, so that the deformation portion fills between adjacent hair-planting portions and covers the connecting portion.

9. The electric toothbrush head according to claim 1, wherein: In the thickness direction of the electric toothbrush head, the surface of the connecting portion away from the bristles is flush with the second surface; and the thickness of the connecting portion is greater than or equal to 1 mm.

10. The electric toothbrush head according to claim 1, wherein: The electric toothbrush head also includes: a supporting portion, the supporting portion being disposed on the second surface; and The mounting portion, one end of the supporting portion is connected to the hair implanting portion and / or the connecting portion, and the other end of the supporting portion is connected to the mounting portion.

11. The electric toothbrush head according to claim 10, wherein: A gap is provided between the mounting portion and the hair-implanting portion; the deformable portion is combined with at least one of the hair-implanting portion, the connecting portion, the supporting portion, and the mounting portion to form at least one of the following connections: The deformable portion wraps around the bottom and side of the hair-implanting portion; The deformation portion covers the mounting portion; The deformable portion fills the gap between the mounting portion and the hair implantation portion; and The deformation portion fills the gap between adjacent hair-implanting portions and wraps the bottom and side portions of the connecting portion.

12. The electric toothbrush head according to claim 10, wherein: In the width direction of the electric toothbrush head, the width of the supporting portion and / or the mounting portion is smaller than the width of the brush plate.

13. The electric toothbrush head according to claim 10, wherein: In the width direction of the electric toothbrush head, the width of the supporting portion is smaller than or equal to the width of the mounting portion.

14. The electric toothbrush head according to claim 10, wherein: The supporting parts include multiple parts, and the multiple supporting parts are arranged in sequence in the length direction of the electric toothbrush head; in the length direction of the electric toothbrush head, the mounting part is connected to at least the supporting part closest to the side edge of the brush plate.

15. The electric toothbrush head according to claim 1, wherein The brush plate has a central axis along the length direction of the electric toothbrush head, and the peripheral side surface includes a plurality of discontinuous sub-side surfaces, and the distances of the plurality of sub-side surfaces from the central axis are at least partially different. In the width direction of the electric toothbrush head, the width of the deformation portion filled in the gap is greater than the width of the deformation portion wrapped in the sub-side surface.

16. An electric toothbrush head, wherein: include: Brush bristles; A plurality of hair-planting portions, the plurality of hair-planting portions being spaced apart from each other, the hair-planting portions comprising a first surface and a second surface opposite to each other in the thickness direction of the electric toothbrush head, the hair-planting portions further comprising hair-planting holes, the bristles being arranged in the hair-planting holes and extending from the first surface of the hair-planting portion; a connecting portion, the connecting portion being provided between adjacent hair-planting portions and used for connecting adjacent hair-planting portions; and The supporting portion is provided on the second surface of the hair-implanting portion and is connected to at least the hair-implanting portion; when the hair-implanting portion is subjected to force, the connecting portion is deformed.

17. The electric toothbrush head according to claim 16, wherein: The hair implantation portion includes a first hair implantation portion and a second hair implantation portion, the first hair implantation portion is connected to the support portion, the second hair implantation portion is spaced apart from the support portion, and the first hair implantation portion and the second hair implantation portion are connected via the connection portion.

18. The electric toothbrush head according to claim 17, wherein: In the length direction of the electric toothbrush head, the second hair-planting portion includes at least two, and the first hair-planting portion is arranged between the at least two second hair-planting portions.

19. The electric toothbrush head according to claim 17, wherein: In the length direction of the electric toothbrush head, the first hair-planting parts include at least two, and the support parts include at least two; at least two of the support parts are respectively connected to at least two of the first hair-planting parts, and the second hair-planting part is arranged on any side of the center line of at least two of the support parts in the width direction of the electric toothbrush head.

20. The electric toothbrush head according to claim 18 or 19, wherein: The supporting portion is also at least partially connected to the connecting portion connected to the second hair-implanting portion.

21. The electric toothbrush head according to claim 16, wherein: The electric toothbrush head includes a first area and a second area arranged around the first area. The hair-planting part in the first area is connected to the supporting part to form a hard support, and the hair-planting part in the second area is connected to the hair-planting part in the first area via the connecting part to form a soft support.

22. The electric toothbrush head according to claim 16, wherein: Along the thickness direction of the electric toothbrush head, adjacent hair-planting portions are arranged at intervals, and the thickness of the connecting portion is smaller than the thickness of the hair-planting portion.

23. The electric toothbrush head according to claim 22, wherein: Along the thickness direction of the electric toothbrush head, the surface of the connecting portion facing the supporting portion is flush with the second surface of the hair-planting portion.

24. The electric toothbrush head according to claim 16, wherein The hair implanting portion, the connecting portion and the supporting portion are an integrally formed structure.

25. The electric toothbrush head according to claim 16, wherein The electric toothbrush head also includes: A deformable portion that is deformable under force, the deformable portion is combined with at least one of the hair-implanting portion, the connecting portion and the supporting portion to support and / or protect the portion combined with the deformable portion.

26. The electric toothbrush head according to claim 25, wherein The hair-implanting portion also includes a peripheral side surface respectively connected to the first surface of the hair-implanting portion and the second surface of the hair-implanting portion, the deformation portion wraps the second surface of the hair-implanting portion and at least a portion of the peripheral side surface of the hair-implanting portion, and the top of the hair-implanting portion protrudes from the deformation portion; the deformation portion is also used to fill the gap between adjacent hair-implanting portions.

27. An electric toothbrush, wherein: include: The electric toothbrush head according to any one of claims 1 to 26; and A brush handle is provided, and the electric toothbrush head is mounted on the brush handle.

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