Toothbrush bristle structure and toothbrush head
The toothbrush bristle structure with varying lengths and slopes addresses the challenge of cleaning uneven tooth surfaces by effectively reaching and cleaning occlusal, inner, and outer tooth surfaces, including interdental gaps.
Patent Information
- Application Number
- JP2026000025U
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2026-01-06
- Publication Date
- 2026-03-06
- Estimated Expiration
- 2036-01-06
AI Technical Summary
Conventional toothbrushes with flat bristles struggle to effectively clean uneven or hard-to-reach areas such as interdental gaps and non-protruding tooth surfaces, especially in cases of irregular dentition or large interdental spaces.
A toothbrush bristle structure with three distinct regions: a first, intermediate, and second bristle region, each with varying bristle lengths and slopes, allowing for enhanced cleaning of occlusal, inner, and outer tooth surfaces, including difficult-to-reach areas like the back ends of molars and gingival sulci.
The structured bristles enable simultaneous cleaning of occlusal surfaces, inner and outer tooth surfaces, and interdental gaps, providing improved cleaning efficacy, especially in irregular dentition.
Smart Images
Figure 0003254993000001_ABST
Abstract
Description
[Technical Field]
[0001] The present invention relates to a toothbrush and its bristle structure. [Background technology]
[0002] In conventional toothbrushes, the top surfaces of the bristles are generally flat. However, such flat structures can only clean relatively protruding tooth surfaces and cannot adequately contact areas that are difficult to clean, such as uneven areas in the dentition or between the teeth. In particular, when the dentition is irregular, there are missing teeth, or the interdental spaces are excessively large, conventional brush structures have difficulty adequately and completely cleaning the interdental gaps and non-protruding tooth surfaces. For this reason, there is room for improvement in the bristles of conventional toothbrushes. Summary of the Invention [Problem to be solved by the invention]
[0003] In view of the drawbacks of the prior art, the present invention aims to provide a toothbrush bristle structure that can clean uneven areas of the teeth or areas of the teeth that are difficult to reach with conventional bristle structures. [Means for solving the problem]
[0004] To solve the above problems, the present invention provides a toothbrush bristle structure provided on a toothbrush head body, the toothbrush having a brush head and a brush head body, the brush head body having a length direction and a width direction and extending along the length direction. The toothbrush bristle structure includes a first bristle-implanted region, an intermediate bristle-implanted region, and a second bristle-implanted region, which are flat and coplanar with one another and arranged sequentially along the length direction, the first bristle body including a plurality of bristles extending upward from the first bristle-implanted region, the intermediate bristle body including a plurality of bristles extending upward from the intermediate bristle-implanted region, the second bristle body including a plurality of bristles extending upward from the second bristle-implanted region, the bristles of the first bristle body gradually increasing in height toward the intermediate bristle body to form a first slope, the bristles of the second bristle body gradually increasing in height toward the intermediate bristle body to form a second slope, and the maximum bristles of the intermediate bristle body are smaller than the maximum bristles of the first bristle body and the maximum bristles of the second bristle body.
[0005] When using the toothbrush bristle structure of this invention, the intermediate brush body cleans the occlusal surfaces of the teeth, and at the same time, because the first and second brush bodies are longer than the intermediate brush body, when the intermediate brush body cleans the occlusal surfaces, the bristles of the first and second brush bodies on the intermediate brush body side come into close contact with the inner and outer surfaces of the teeth, allowing for simultaneous cleaning. Furthermore, the first and second slopes allow the bristles to reach areas that are difficult to clean, such as the back ends of molars and gingival sulci, and enable close cleaning even at the corners of the teeth.
[0006] Furthermore, by configuring the first brush body, intermediate brush body, and second brush body to have different bristle lengths, it is possible to simultaneously clean the occlusal surfaces and inner and outer surfaces of the teeth, and it is also possible to effectively clean gaps and recesses between teeth that are difficult to reach with a regular toothbrush. [Brief explanation of the drawings]
[0007] [Figure 1] FIG. 2 is a perspective view showing the device attached to a toothbrush. [Figure 2]1 is a perspective view of a toothbrush bristle structure according to the present invention; [Figure 3] 1 is a side view of the toothbrush bristle structure of the present invention; [Figure 4] 1 is a plan view of a toothbrush bristle structure according to the present invention; [Figure 5] 1 is a front view of a toothbrush bristle structure according to the present invention; [Figure 6] FIG. 2 is a front cross-sectional view of the intermediate brush body in the toothbrush bristle structure of the present invention. [Figure 7] 1 is an explanatory diagram showing the toothbrush bristle structure of the present invention in use. [Figure 8] 1 is an explanatory diagram showing the toothbrush bristle structure of the present invention in use. [Figure 9] 1 is an explanatory diagram showing the toothbrush bristle structure of the present invention in use. DETAILED DESCRIPTION OF THE INVENTION
[0008] 1 and 2, the toothbrush head of the present invention is mounted on a toothbrush and includes a brush head body 10 and a toothbrush bristle structure 20. The brush head body 10 has a length direction and a width direction, and extends along the length direction.
[0009] Referring to Figures 2 to 4, the toothbrush bristle structure 20 is provided on the brush head body 10 and has a first bristle planting region 21, an intermediate bristle planting region 22, a second bristle planting region 23, a first brush body 24, a second brush body 25 and an intermediate brush body 26.
[0010] The first bristle-implanted region 21, the intermediate bristle-implanted region 22, and the second bristle-implanted region 23 are flat and formed on one surface of the brush head body 10, and are arranged sequentially along the length direction. In this embodiment, these bristle-implanted regions are arranged at intervals from one another, and the interval between adjacent bristle-implanted regions is 1 mm or more and 3 mm or less, and preferably 2 mm. In this embodiment, the first bristle-implanted region 21, the intermediate bristle-implanted region 22, and the second bristle-implanted region 23 are all elliptical.
[0011] The first brush body 24, the second brush body 25 and the intermediate brush body 26 are provided on the brush head body 10 and each include a plurality of bristles extending upward from the first bristle-implanted region 21, the second bristle-implanted region 23 and the intermediate bristle-implanted region 22. As a result, the cross-sectional shapes of the first brush body 24, the second brush body 25 and the intermediate brush body 26 are all generally elliptical.
[0012] The maximum extension height of the bristles of the intermediate brush body 26 is smaller than the maximum extension height of the bristles of the first brush body 24 and the second brush body 25. In this embodiment, the difference D1 in extension height between the bristles of the first brush body 24 and the bristles of the intermediate brush body 26 is 1 mm or more and 3 mm or less, and preferably 2 mm. This forms recesses between the first brush body 24, the intermediate brush body 26, and the second brush body 25.
[0013] The extension height of the bristles of the first brush body 24 gradually increases toward the intermediate brush body 26, forming a first inclined surface 241. The first inclined surface 241 makes it easier for the bristles to penetrate into areas of the tooth row where the teeth are not aligned. In this embodiment, the angle θ1 between the first inclined surface 241 and the first bristle-implanted region 21 is between 40 degrees and 50 degrees, and preferably 45 degrees. Furthermore, because the first bristle-implanted region 21 is elliptical, an outwardly convex arc-shaped edge is formed at the top of the first inclined surface 241, which fits tightly into the gingival sulcus and can clean the gap between the teeth and gums.
[0014] The bristles of the first brush body 24 adjacent to the intermediate brush body 26 are arranged at an angle toward the intermediate brush body 26. In this embodiment, the angle θ2 between the extension direction of these bristles and the first bristle-implanted region 21 is 81 degrees or more and 83 degrees or less, and preferably 82 degrees. This allows the bristles to come into close contact with the side of the teeth when cleaning the occlusal surface, improving cleaning performance.
[0015] The second brush body 25 has a configuration substantially similar to that of the first brush body 24, and is arranged symmetrically around the intermediate brush body 26. The extension height of the bristles of the second brush body 25 gradually increases toward the intermediate brush body 26, forming a second inclined surface 251. The angle θ3 between the second inclined surface 251 and the second bristle-implanted region 23 is between 40 degrees and 50 degrees, and preferably 45 degrees. An outwardly convex arc-shaped edge is also formed at the top of the second inclined surface 251, allowing it to fit closely into the gingival sulcus for cleaning.
[0016] The bristles of the second brush body 25 adjacent to the intermediate brush body 26 are arranged at an angle toward the intermediate brush body 26. In this embodiment, the angle θ4 between the extension direction of these bristles and the second bristle planting region 23 is 81 degrees or more and 83 degrees or less, and preferably 82 degrees.
[0017] The extension height of the bristles of the intermediate brush body 26 gradually decreases from both sides in the width direction toward the center, and the top of the bristles has an inward concave arc shape. Also, the extension height gradually increases from both sides in the length direction toward the center. This forms sharp corners on both sides in the width direction of the intermediate brush body 26, allowing it to penetrate into the cavities and grooves on the occlusal surfaces of molars and perform effective cleaning by reciprocating.
[0018] When using the toothbrush head of this invention, the occlusal surfaces of the teeth are cleaned by the intermediate brush body 26, while the first brush body 24 and the second brush body 25 closely contact the inner and outer surfaces of the teeth, cleaning them simultaneously. In addition, the first inclined surface 241 and the second inclined surface 251 enable effective cleaning of difficult-to-clean areas and corners of the teeth.
[0019] As described above, according to the present invention, the configuration of the first brush body 24, intermediate brush body 26 and second brush body 25, which have different bristle lengths, allows the occlusal surfaces and inner and outer surfaces of the teeth to be cleaned simultaneously, and also provides excellent cleaning effects on gaps and recesses between the teeth. [Explanation of symbols]
[0020] 10 Print head body 20 Toothbrush bristle structure 21 First Hair Transplant Area 22 Intermediate hair transplant area 23 Second Hair Transplant Area 24 First brush body 241 First slope 25 Second brush body 251 Second Slope 26 Intermediate brush body θ1, θ2, θ3, θ4 angles D1 Height difference
Claims
1. A toothbrush bristle structure provided on a toothbrush head body, The brush head body has a length direction and a width direction and extends along the length direction, The toothbrush bristle structure includes a first bristle-implanted region, an intermediate bristle-implanted region, and a second bristle-implanted region, which are flat and formed on the same plane, and which are sequentially arranged on the brush head body along the length direction; a first brush body including a plurality of brushes extending upward from the first bristle planting region; an intermediate brush body including a plurality of brushes extending upward from the intermediate bristle planting region; a second brush body including a plurality of brushes extending upward from the second bristle planting area; The extension height of the bristles of the first brush body gradually increases toward the intermediate brush body to form a first slope, The extension height of the bristles of the second brush body gradually increases toward the intermediate brush body to form a second inclined surface, A toothbrush bristle structure characterized in that the maximum extension height of the bristles of the intermediate brush body is smaller than the maximum extension height of the bristles of the first brush body and the maximum extension height of the bristles of the second brush body.
2. The toothbrush bristle structure according to claim 1, wherein the first bristle-implanted region, the intermediate bristle-implanted region and the second bristle-implanted region are all elliptical.
3. 3. A toothbrush bristle structure according to claim 1 or 2, wherein the extension height of the bristles of the intermediate brush body gradually decreases from both sides in the width direction toward the center, and the top of the intermediate brush body has a concave arc shape.
4. 3. The toothbrush bristle structure according to claim 1, wherein the extension height of the bristles of the intermediate brush body gradually increases from both sides of the intermediate brush body in the length direction toward the center.
5. 3. The toothbrush bristle structure according to claim 1, wherein the angle formed between the first inclined surface and the first bristle implantation region is between 40 degrees and 50 degrees.
6. 3. The toothbrush bristle structure according to claim 1, wherein the angle formed between the second inclined surface and the second bristle planting region is between 40 degrees and 50 degrees.
7. A toothbrush brush structure as described in claim 1 or 2, wherein the brushes adjacent to the intermediate brush body of the first brush body and the brushes adjacent to the intermediate brush body of the second brush body are both arranged at an angle toward the intermediate brush body.
8. 8. The toothbrush brush structure according to claim 7, wherein an angle formed between the extending direction of the bristles of the first bristle body adjacent to the intermediate brush body and the first bristle planting region is 81 degrees or more and 83 degrees or less.
9. 3. The toothbrush bristle structure according to claim 1, wherein the difference in extension height between the bristles of the first brush body and the bristles of the intermediate brush body is 1 mm or more and 3 mm or less.
10. A toothbrush head having a length direction and a width direction and extending along the length direction, and a toothbrush bristle structure provided on the brush head body, The toothbrush bristle structure includes a first bristle implantation region, an intermediate bristle implantation region, and a second bristle implantation region, which are flat and formed on one surface of the brush head body, and are arranged sequentially along the length direction; a first brush body including a plurality of brushes extending upward from the first bristle planting region; an intermediate brush body including a plurality of brushes extending upward from the intermediate bristle planting region; a second brush body including a plurality of brushes extending upward from the second bristle planting area; The extension height of the bristles of the first brush body gradually increases toward the intermediate brush body to form a first slope, The extension height of the bristles of the second brush body gradually increases toward the intermediate brush body to form a second inclined surface, A toothbrush head, characterized in that the maximum extension height of the bristles of the intermediate brush body is smaller than the maximum extension height of the bristles of the first brush body and the maximum extension height of the bristles of the second brush body.