A child toothbrush head and a child toothbrush

By dividing the bristle structure of the children's toothbrush into multiple parts and using different bristle characteristics and designs, the problem of existing children's toothbrushes being unable to effectively clean the pits, fissures, gaps, and triangular areas of the six-year molars has been solved, resulting in better teeth cleaning and comfort.

CN224522623UActive Publication Date: 2026-07-21SHANGHAI YICHI TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI YICHI TECHNOLOGY CO LTD
Filing Date
2025-09-05
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing children's toothbrushes cannot effectively clean the pits, gaps, and triangular areas of the six-year molars, making it difficult to simultaneously meet the needs for cleaning power and comfort.

Method used

The bristle structure is divided into four parts: bottom end, top end, inner circle, and dosage guide. It uses pointed bristles, rounded bristles, and rounded antibacterial bristles with different diameters and heights, and designs inclined surfaces and V-shaped bearing surfaces to optimize the bristle pore size and meet the cleaning needs of different tooth areas.

Benefits of technology

It improves the cleaning depth of the pits and fissures of the six-year molars, reduces the caries rate, expands the coverage of the bristles, reduces cleaning blind spots, improves the cleaning efficiency of the interdental and triangular areas, and takes into account both gum protection and antibacterial functions.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a child toothbrush head and child toothbrush relate to child toothbrush technical field, and this child toothbrush head includes: brush head body, bristle structure is installed on the brush head body, and the bristle structure is divided into: bottom end part, top end part, and the top end part and bottom end part combination form the outer ring bristle area, the inner ring part is located in the outer ring bristle area, and the dosage guide part is located in the outer ring bristle area, and the dosage guide part and inner ring part are along the length direction interval distribution of brush head body. Also disclose a child toothbrush, including preceding child toothbrush head. The utility model solves the technical problem that the child toothbrush of prior art cannot satisfy six age teeth cleaning demand.
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Description

Technical Field

[0001] This utility model relates to the field of children's toothbrush technology, and in particular to a children's toothbrush head and a children's toothbrush. Background Technology

[0002] Between the ages of 5 and 7, children enter the transition from deciduous to permanent teeth, during which the six-year molars (first permanent molars) begin to erupt. Located at the innermost part of the mouth, the six-year molars have prominent pits and fissures on their surface and are the most susceptible to decay among the permanent teeth in childhood, often referred to as "critical permanent teeth." Once the six-year molars decay, it will severely affect the alignment and occlusal function of subsequent permanent teeth.

[0003] Although children's toothbrushes exist on the market, they have the following problems: (1) the bristles are not high enough to reach the pits and grooves of the six-year molars; (2) the bristle diameter is not properly selected, and the cleaning power and comfort cannot be balanced; (3) there is a lack of structural design for the gaps between teeth and the triangular area, resulting in many blind spots. Therefore, existing toothbrushes cannot meet the comprehensive needs of cleaning the pits and grooves of the six-year molars, deep cleaning of the gaps between teeth, and cleaning of the triangular area at the same time. Utility Model Content

[0004] The purpose of this utility model is to provide a children's toothbrush head and a children's toothbrush, which solves the technical problem that existing children's toothbrushes cannot meet the cleaning needs of six-year molars.

[0005] This application discloses a children's toothbrush head, comprising: Brush head body; A bristle structure is mounted on the brush head body, and the bristle structure is divided into: bottom end; The top end portion, together with the bottom end portion, forms an outer ring bristle area; The inner ring is located within the outer ring bristle area; The dosage guide is located within the outer ring bristle area, and the dosage guide and the inner ring are spaced apart along the length of the brush head body.

[0006] This application divides the bristle structure into multiple parts to achieve cleaning of different areas of the toothbrush, thereby improving the cleaning effect on children's teeth.

[0007] Based on the above technical solution, the present application can be further improved as follows: Furthermore, the bottom end is composed of several bundles of tapered bristles, the top end is composed of several bundles of rounded bristles, and the inner ring and dosage guide are both composed of several bundles of rounded antibacterial bristles. The beneficial effect of this step is that different bristles are used in different areas, which can better and more comfortably complete the cleaning of teeth.

[0008] Furthermore, the bristles of the dosage guide are provided with an indicator color layer, which makes it easier for children to use.

[0009] Furthermore, the diameter of the bristle root at the bottom end is d1, the diameter of the bristle root at the top end is d2, the diameter of the bristle root at the inner ring is d3, and the diameter of the bristle root at the dosage guide is d4; d1=d2; d3=d4; d1>d3. The beneficial effect of this step is that the cleaning of the six-year molars can be better completed by using bristles with sufficient diameter.

[0010] Furthermore, the top surfaces of the bristle bundles in the dosage guide, the top part, and the inner ring are all inclined surfaces. The beneficial effect of this step is that the inclined bristles can better conform to the teeth and complete the cleaning of the gaps between the teeth.

[0011] Furthermore, the dosage guide includes at least two rows of rounded antibacterial bristle bundles, and the top surfaces of the bristle bundles of the dosage guide are combined to form a V-shaped bearing surface. The beneficial effect of this step is that the V-shaped surface can better support the toothbrush.

[0012] Furthermore, the inner ring includes at least two rows of rounded antibacterial bristle bundles. The maximum height of any row of rounded antibacterial bristle bundles is different from the maximum height of the remaining rows of rounded antibacterial bristle bundles. The beneficial effect of this step is that the bristles of different heights can better clean the gaps between teeth and the triangular area.

[0013] Furthermore, the maximum height of the bristles at the tip is H1, where H1 ≥ 10 mm. The beneficial effect of this step is that the higher bristle height allows for better cleaning of the teeth.

[0014] Furthermore, the brush head body has bristle holes, and the bristle structure is installed inside the bristle holes; The diameter of the brush bristle hole is D, 1.3mm≤D≤1.4mm. The beneficial effect of this step is that by designing the brush bristle hole, the subsequently installed bristles can better clean the teeth.

[0015] This application also discloses a children's toothbrush, including the aforementioned children's toothbrush head.

[0016] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: 1. This application divides the bristle structure into four parts, and the different bristle structures and bristle heights can better clean teeth.

[0017] 2. This application designs the diameter of the brush bristle holes to meet the requirements of brush bristle assembly while also enabling the bristles to have better deflection elasticity, thereby improving the cleaning effect on teeth.

[0018] 3. The toothbrush head of this application can improve the depth of pit and fissure cleaning, reduce the caries rate of six-year molars, and expand the coverage of the bristles to reduce blind spots in cleaning misaligned teeth. It can improve the cleaning efficiency of interdental spaces and triangular areas, and can protect gums and provide antibacterial functions while ensuring cleaning power. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a children's toothbrush head according to a specific embodiment of the present utility model; Figure 2 for Figure 1 The main view after removing the brush bristle structure; Figure 3 for Figure 1 The left view; Figure 4 for Figure 3 A diagram showing the removal of the bottom end; The attached figures are labeled as follows: 1-Brush head body; 2-Bristle structure; 3-Bristle holes; 201 - Bottom end; 202 - Top end; 203 - Inner ring; 204 - Dosage guide. Detailed Implementation

[0021] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention. It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0022] In the description of this application, it should be understood that the terms "upper", "lower", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] In this application, unless otherwise expressly specified and limited, the terms "installation," "setup," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] To better understand the above technical solutions, the following will provide a detailed description of the technical solutions in conjunction with the accompanying drawings and specific embodiments.

[0025] Example: like Figure 1-4 As shown in the figure, this application discloses a children's toothbrush head, which is mainly suitable for children aged 5-7 years old. At this time, children are in the stage of transition between deciduous teeth and permanent teeth. This application can better meet the comprehensive needs of cleaning the pits and fissures of the six-year molars, deep cleaning of the interdental spaces, and cleaning of the triangular area.

[0026] like Figure 1 As shown, the specific structure of this application is as follows, including: Brush head body 1, which is an existing structure, is used to support the subsequent bristle structure; The bristle structure 2 is installed on the brush head body 1. During installation, the bristle structure 2 is fixed to the brush head body 1 with copper sheets to ensure stability.

[0027] This application divides the bristle structure 2 into multiple sections to improve the cleaning effect. Specifically, the bristle structure 2 is divided into: The bottom end 201 is specifically located at a position slightly below the brush head body 1, as shown in the figure; The top part 202, together with the bottom part 201, forms an outer ring bristle area. Specifically, the top part 202 is located at a position slightly above the brush head body. Preferably, the outer ring bristle area is elliptical. The inner ring 203 is located within the outer ring brush area; The dosage guide 204 is located within the outer ring bristle area, and the dosage guide 204 and the inner ring 203 are spaced apart along the length of the brush head body 1. The dosage guide 204 is for the convenience of providing toothpaste when children use it.

[0028] This application designs the bristle structure 2 into four parts. Specifically, the bottom end 201 is composed of several tapered bristle bundles, the top end 202 is composed of several rounded bristle bundles, and the inner ring 203 and the dosage guide 204 are both composed of several rounded antibacterial bristle bundles (the antibacterial bristles in this application refer to silver ion antibacterial bristles).

[0029] To further explain this application, the bristle structure 2 in this application is divided into four parts (meaning the bristles are divided into four areas). The bottom end 201 needs to reach into the narrow gaps between the teeth of children during the tooth replacement period to remove food debris between the deciduous teeth and permanent teeth. Because at this stage, the loss of deciduous teeth and the eruption of permanent teeth often cause changes in the gaps between the teeth, if cleaning is not thorough, it is very easy to form cavities. Therefore, the pointed bristle bundles can better complete the cleaning of this area. like Figure 2 , 3 As shown, the top part 202 is the highest point of the bristle structure 2, which focuses on the six-year molars and the pits and fissures of the molars. These teeth are located at the back and have deep pits and fissures on the surface, making them the permanent teeth most prone to decay in children's mouths. The design of rounded bristle bundles can improve the cleaning effect while protecting the delicate gums. The inner ring 203 is located in the middle of the brush head body 1. It can gently clean the surface of baby teeth and gums, and at the same time, it uses antibacterial properties to reduce the growth of oral bacteria. Because the teeth are often uneven during the tooth replacement period, the soft bristles in the middle of the brush head can better fit the irregular tooth surface and triangular area, reduce blind spots, and prevent children from resisting brushing due to discomfort.

[0030] When children use the product of this application, they usually need to squeeze out the toothpaste themselves. Therefore, in order to avoid using too much toothpaste, the bristles of the dosage guide 204 in this application are provided with an indicator color layer. The indicator color layer can be used to indicate the amount used, that is, just cover the dosage guide 204 to avoid waste.

[0031] For cleaning teeth in different areas, brush bristles of different diameters need to be designed to ensure cleaning effectiveness. Specifically, the root diameter of the bristles at the bottom end 201 is d1, the root diameter of the bristles at the top end 202 is d2, the root diameter of the bristles at the inner ring 203 is d3, and the root diameter of the bristles at the dosage guide 204 is d4; d1=d2; d3=d4; d1>d3; The bristle diameter disclosed in this application refers to the root diameter of the bristles.

[0032] Specifically, the bottom end 201 of this application uses a 0.12mm diameter tapered filament (the tip is ground to 0.01–0.03mm), which is more flexible and can better clean teeth; the top end 202 uses a 0.12mm diameter rounded filament, and the tip height is set to the highest point of the entire brush bristle, so that the cleaning action can be completed better; the inner ring 203 uses a 0.1mm diameter rounded antibacterial filament, which at the same time reduces the growth of oral bacteria by utilizing antibacterial properties.

[0033] To better clean teeth, the top surfaces of the bristle bundles in the dosage guide 204, the tip 202, and the inner ring 203 are all inclined, which allows them to better conform to the teeth.

[0034] In conjunction with the foregoing, the dosage guide 204 in this application includes at least two rows of rounded antibacterial bristle bundles, and the top surfaces of the bristle bundles of the dosage guide 204 are combined to form a V-shaped bearing surface. Specifically, the rounded antibacterial bristle bundles of the dosage guide 204 are in two rows with a bristle diameter of 0.1 mm. The two rows of rounded antibacterial bristle bundles are inclined in opposite directions, tilting inward and converging to form a V-shape, which makes it easy for the toothbrush to be stably placed in it when squeezed, thus avoiding waste.

[0035] Similarly, the inner ring portion 203 in this application includes at least two rows of rounded antibacterial bristle bundles, and the maximum height of any row of rounded antibacterial bristle bundles is different from the maximum height of the remaining rows of rounded antibacterial bristle bundles. The inner ring portion 203 in this application has a stepped height design. Because the height of teeth varies and their arrangement is irregular, complex triangular blind spots are formed (gaps between deciduous teeth and permanent teeth, and between the gum and the crown). By designing different heights, the bristles can sequentially cover the surface of the high permanent teeth, the low deciduous teeth, and the irregular triangular areas during brushing, thereby improving the cleaning coverage.

[0036] Specifically, the inner ring 203 in this application consists of three rows of bristle bundles, with the maximum height of each row of bristle bundles designed in a gradient manner. For example, the maximum height of one row of bristle bundles is 10mm-9mm, the maximum height of the remaining row of bristle bundles is 8mm-9mm, and the maximum height of the last row of bristle bundles is 7mm-8mm, thus forming a bristle area with different heights to ensure the cleaning effect.

[0037] The maximum height of the bristles at the tip 202 is H1, where H1 ≥ 10mm. This is because the six-year molars begin to erupt between 5 and 7 years of age, are located posteriorly, and have deep pits and fissures on their surface, making them a high-risk area for cavities. Conventional brush bristles are not high enough to effectively reach the bottom of these pits and fissures; sufficiently tall bristles allow for better cleaning.

[0038] like Figure 4As shown, the brush head body 1 has a bristle hole 3, and the bristle structure 2 is installed inside the bristle hole 3; The diameter of the brush pore 3 is D, where 1.3mm≤D≤1.4mm.

[0039] This application also discloses a children's toothbrush, including the aforementioned children's toothbrush head.

[0040] Further explanation is provided regarding this application: Because the top of the bristle bundle in this application is an inclined surface, the maximum height in this application refers to the maximum height at which the top of the bristle bundle is located.

[0041] To achieve the above objectives, this application provides the following technical solutions, which are described in stages according to their order of use: This application divides the bristle structure 2 into four parts, each used to perform different functions. Each part consists of several bundles of bristles, and improvements are also made in terms of bristle structure, bristle height, and aperture.

[0042] Regarding the bristles: The bottom tip 201 is located in a lower part of the brush head body 1, forming a semi-circular area. Specifically, it uses tapered bristles with a diameter of 0.12mm-0.13mm (the tips are ground to 0.01-0.03mm). Because these tapered bristles are highly flexible, they can reach deep into the narrow gaps between children's teeth during the teething period while maintaining a gentle touch, removing food debris between deciduous and permanent teeth. This design is particularly suitable for children aged 5-7, as the shedding of deciduous teeth and the eruption of permanent teeth often cause changes in the gaps between teeth during this stage. If cleaning is not thorough, cavities can easily form. The bristles at the bottom tip 201 can reach deep into this area to complete the cleaning.

[0043] The tip 202 is located in the upper part of the brush head body 1, forming a semi-circular area that works in conjunction with the bottom end to form the outer bristle area. Specifically, it uses rounded bristles with a diameter of 0.12mm-0.13mm, with the tip height set as the highest point of the entire bristle, for targeted action on the six-year molars and the pits and fissures of the molars. The six-year molars (first permanent molars) erupt around the age of 6. Located posteriorly with deep pits and fissures, they are the most susceptible to decay among permanent teeth in children's mouths. This design, through the use of thickened and rounded bristles, improves cleaning power while protecting delicate gums, particularly meeting the care needs of children aged 5-7 during the early eruption of their six-year molars.

[0044] The inner bristle section 203, located within the outer bristle area and in the center of the brush head, uses rounded antibacterial bristles with a diameter of 0.09mm-0.10mm. This gently cleans the surfaces of baby teeth and gums while reducing oral bacterial growth through its antibacterial properties. During the teething period, the teeth are often uneven; the soft bristles in the center of the brush head better conform to irregular tooth surfaces and triangular areas, reducing blind spots and preventing children from resisting brushing due to discomfort.

[0045] Regarding bristle height: The top part 202 features a raised front end design. As mentioned earlier, the top of the top part 202 is an inclined surface, specifically, it slopes downwards from front to back to ensure that the front end is the highest. This provides sufficient height to clean areas prone to cavities. Specifically, the maximum height of the bristles in this area is designed to be 10mm, which not only allows for deep cleaning of the bottom of the six-year molars' fissures but also provides stronger elastic support to prevent the bristles from bending excessively and weakening the cleaning effect. At the same time, it provides stronger "vertical entry capability" to meet the cleaning needs of the fissures during the eruption period of the six-year molars.

[0046] The inner ring features bristle bundles of varying heights (specifically, a gradient decrease in height) to effectively clean areas of varying tooth heights and improve cleaning results.

[0047] Regarding the aperture: This application provides bristle holes on the brush head body 1. The diameter of the bristle holes is 1.3mm-1.4mm, which is larger than the existing hole diameters. This hole diameter can accommodate thicker bristles. At the same time, if the hole diameter is too small, it is difficult to stabilize the thicker bristles. A hole diameter larger than 1.4mm will result in a brush head that is too sparse, which is not conducive to the coverage of children's small mouths. The larger hole diameter can support multi-diameter composite bristle implantation. At the same time, the slightly larger distance between the bristle roots can obtain greater deflection elasticity, making it easier to enter narrow gaps between teeth for cleaning. Moreover, the bristle bundles installed in this hole diameter can "spread" better in the oral cavity, increasing the coverage area.

[0048] Furthermore, this application further designs the brush head, wherein the size of the brush head body is smaller, for example, it can be 17.52mm high × 11.49mm wide, which is better suited for children's oral cavity, and the bristle implantation holes are 34 holes, which can better complete the partitioning of the bristle structure.

[0049] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification. In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A children's toothbrush head, characterized in that, include: Brush head body (1); The bristle structure (2) is installed on the brush head body (1), and the bristle structure (2) is divided into: Bottom end (201); The top part (202) and the bottom part (201) combine to form an outer ring brush area; The inner ring (203) is located within the outer ring brush area; The dosage guide (204) is located within the outer ring bristle area, and the dosage guide (204) and the inner ring (203) are distributed at intervals along the length direction of the brush head body (1).

2. The children's toothbrush head according to claim 1, characterized in that, The bottom end (201) is composed of several tapered bristle bundles, the top end (202) is composed of several rounded bristle bundles, and the inner ring (203) and dosage guide (204) are both composed of several rounded antibacterial bristle bundles.

3. The children's toothbrush head according to claim 2, characterized in that, The dosage guide (204) has an indicator color layer on its bristles.

4. The children's toothbrush head according to claim 2, characterized in that, The diameter of the bristle root of the bottom end (201) is d1, the diameter of the bristle root of the top end (202) is d2, the diameter of the bristle root of the inner ring (203) is d3, and the diameter of the bristle root of the dosage guide (204) is d4; d1=d2; d3=d4; d1>d3.

5. The children's toothbrush head according to claim 2, characterized in that, The top surfaces of the bristle bundles of the dosage guide (204), the top end (202), and the inner ring (203) are all inclined surfaces.

6. The children's toothbrush head according to claim 5, characterized in that, The dosage guide (204) includes at least two rows of rounded antibacterial bristle bundles, and the top surfaces of the bristle bundles of the dosage guide (204) are combined to form a V-shaped bearing surface.

7. The children's toothbrush head according to claim 5, characterized in that, The inner ring (203) includes at least two rows of rounded antibacterial filament bristles, the maximum height of any row of rounded antibacterial filament bristles being different from the maximum height of the remaining rows of rounded antibacterial filament bristles.

8. The children's toothbrush head according to claim 7, characterized in that, The maximum height of the bristles at the top part (202) is H1, where H1 ≥ 10 mm.

9. The children's toothbrush head according to any one of claims 1-8, characterized in that, The brush head body (1) has a bristle hole (3), and the bristle structure (2) is installed inside the bristle hole (3). The diameter of the brush pore (3) is D, 1.3mm≤D≤1.4mm.

10. A children's toothbrush, characterized in that, Includes the children's toothbrush head as described in any one of claims 1-9.