Toothbrush
By designing inclined protrusions and fixing metal plates on the toothbrush head, the problem of incomplete cleaning by existing toothbrushes is solved, the cleaning effect on the tooth surface and hard-to-reach areas is improved, and the risk of tooth damage is reduced.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- ACUMEN CO LTD
- Filing Date
- 2024-12-04
- Publication Date
- 2026-06-11
AI Technical Summary
Existing toothbrushes can easily damage teeth when brushing and are difficult to thoroughly clean areas such as the junction of teeth and gums and gaps between teeth, leading to plaque buildup and potentially causing periodontal disease.
Design a toothbrush head structure that uses an inclined boss and a fixed metal plate to ensure that the central axis of the bristle tufts in the bristle implantation hole overlaps with the central axis of the fixed metal plate and maintains the same depth, thereby enhancing the fixing strength of the bristle tufts and improving the cleaning effect on hard-to-reach areas of the teeth by using inclined bristles.
It improves the fixation strength of the bristles, enhances the cleaning effect on the tooth surface and hard-to-reach areas, reduces the risk of tooth damage, and enhances the comprehensiveness and effectiveness of tooth cleaning.
Smart Images
Figure CN2024136713_11062026_PF_FP_ABST
Abstract
Description
toothbrush Technical Field
[0001] This invention relates to the technical field of oral hygiene products. Specifically, this invention relates to a toothbrush body assembly, and more particularly to a toothbrush with an inclined boss and a fixing metal plate, which can improve the problem of uneven bristle tension and increase the bristle fixing strength. Background Technology
[0002] Toothbrushes are an essential oral hygiene product used daily by modern people. Brushing your teeth correctly is key to maintaining oral health, protecting them from cavities and periodontal disease, and helping to keep your breath fresh.
[0003] Currently, toothbrush heads have bristles directly embedded in the brush head's flat surface. When brushing, the Bass brushing technique, recommended by the American Dental Association, is essential for effectively removing plaque near the gum line and in the gingival sulcus. This involves placing the toothbrush bristles between the teeth and gums at a 45-degree angle and gently brushing back and forth. This effectively cleans the gaps between the teeth and gums. Many people do not brush their teeth correctly, which can damage teeth over time. Furthermore, insufficient brushing time does not achieve the desired cleaning effect. Current toothbrushes are also ineffective at cleaning areas such as the lingual surfaces, the gum line, and interdental spaces. Experiments have shown that plaque accumulates in these areas in most people, eventually leading to periodontal disease and other dental problems.
[0004] However, there is another known toothbrush structure with inclined bristles, such as Chinese Patent Publication No. CN1346242A, which discloses a toothbrush including a handle, a head extending from the handle, and bristle tufts extending from the head, wherein the bristle tufts are inclinedly arranged on the head. The bristle structure formed by the inclined bristle tufts provides improved accessibility to hard-to-reach areas in the oral cavity (such as the lingual surface of the front teeth and the area behind the back molars), allowing more bristles to contact the outer surface of the front teeth.
[0005] As shown in Figures 1A and 1B, the hair tufts 60 are inclined at an acute angle relative to the hair-planting surface 5a of the head 5. These hair tufts 60 are fixed within pre-set holes 53 in the head 5 by fixing metal plates 62. The holes 53 are relatively inclined. The fixing metal plates 62 are disposed within the holes 53, with their opposite ends abutting against the inner wall surface and the bent sections of the hair tufts 60, thus fixing the hair tufts 60 within the holes 53. As shown in Figure 1A, the fixing metal plates 62 are also inclined relative to the inclined direction of the holes 53. 2. The hair grafting surface 5a of the head 5 will form different depths H1 and H2, resulting in uneven tension of the hair tufts 60; or as shown in Figure 1B, the fixing metal plate 62 is set in the hole 53 parallel to the hair grafting surface 5a of the head 5. Although the fixing metal plate 62 and the hair grafting surface 5a of the head 5 can form the same depths H3 and H4, the central axis A1 of the fixing metal plate 62 and the central axis A2 of the hole 14 are offset from each other. That is, the central axes A1 and A2 are not on the same straight line, which will also cause uneven tension of the hair tufts 60 and make them prone to detachment. Summary of the Invention
[0006] To meet the needs of the industry, the inventors of this case have developed a toothbrush with tilted protrusions to prevent residue buildup.
[0007] Therefore, this invention provides a toothbrush, including a brush body, which at least includes: a handle portion disposed along its long axis; a head extending from the front end of the handle portion, the front of the head having a bristle-implanting surface; a plurality of first inclined bosses protruding from the bristle-implanting surface to form a first inclined surface, the first inclined surface being inclined in a first inclined direction, and a first bristle-implanting hole recessed inward on the first inclined surface for implanting bristle bundles; and a plurality of fixing metal plates, which respectively fix the bristle bundles in the first bristle-implanting holes, the fixing metal plates being inclined inward on the first inclined surface, the central axis of the fixing metal plates overlapping with the central axis of the first bristle-implanting holes, and each part of the fixing metal plate having the same depth with the first inclined surface.
[0008] In a preferred embodiment, the angle between the first inclined surface and the hair-planting surface is between 0 and 30 degrees.
[0009] In a preferred embodiment, the first hair implantation hole is inclined relative to the normal direction of the first inclined surface.
[0010] In a preferred embodiment, the device further includes a plurality of second inclined protrusions, which are arranged parallel to each other and along the long axis of the plurality of first inclined protrusions, and protrude from the hair-planting surface to form a second inclined surface. The second inclined surface is inclined in a second inclined direction, and the first and second inclined directions are opposite to each other. A second hair-planting hole is recessed inward on the second inclined surface for planting hair bundles.
[0011] In a preferred embodiment, the opening of the first hair implantation hole faces the front end of the handle, and the hair tuft implanted in the first hair implantation hole is inclined toward the front end of the handle; or, the opening of the second hair implantation hole faces the rear end of the handle, and the hair tuft implanted in the second hair implantation hole is inclined toward the rear end of the handle.
[0012] In a preferred embodiment, the head further has a plurality of third inclined protrusions adjacent to the first inclined protrusion. The plurality of third inclined protrusions protrude from the hair implantation surface to form a third inclined surface. The third inclined surface is inclined toward the first inclined direction, and a third hair implantation hole is recessed inward on the third inclined surface for implanting hair bundles.
[0013] In a preferred embodiment, the head further has a flat plate portion adjacent to the first inclined boss, the flat plate portion having a plurality of fourth hair implantation holes for implanting hair tufts.
[0014] In a preferred embodiment, the fourth hair implantation hole is inclined relative to the normal direction of the first inclined surface.
[0015] In a preferred embodiment, the hair bundle has a plurality of hair clusters, each of which has a free end and a fixed end, the fixed end being opposite to and fixed to the hair-planting surface, the free end being planar.
[0016] In a preferred embodiment, the free end of the hair tuft implanted in the first hair follicle is formed as a continuous arc surface. Attached Figure Description
[0017] Figures 1A and 1B are enlarged sectional views of the head structure of a toothbrush.
[0018] Figure 2 is a perspective view of a toothbrush according to a first embodiment of the present invention;
[0019] Figure 3 is an enlarged perspective view of the head structure according to the first embodiment of the present invention, showing the state of the present invention without hair grafting.
[0020] Figure 4 is an enlarged sectional view of the head side structure according to the first embodiment of the present invention;
[0021] Figure 5 is an enlarged cross-sectional view of the structure of the hair implantation hole according to the first embodiment of the present invention;
[0022] Figure 6 is an enlarged schematic diagram of the frontal structure of the head according to the first embodiment of the present invention;
[0023] Figure 7 is a perspective view of a toothbrush according to a second embodiment of the present invention;
[0024] Figure 8 is an enlarged sectional view of the head side structure according to the second embodiment of the present invention;
[0025] Figure 9 is an enlarged schematic diagram of the structure of the head side according to the first embodiment of the present invention.
[0026] Symbol explanation:
[0027] Central axes A1, A2
[0028] Depths H1, H2, H3, H4, H5, H6
[0029] First virtual line L1
[0030] Second virtual line L2
[0031] Third virtual line L3
[0032] included angle θ
[0033] Refresh the base game 1
[0034] 2 brushes
[0035] Handle 3
[0036] Neck 4
[0037] Head 5
[0038] Hair transplanting surface 5a
[0039] First inclined surface 5b
[0040] Second inclined surface 5c
[0041] Third inclined plane 5d
[0042] First inclined protrusion 51
[0043] First hair follicle 511
[0044] Second inclined protrusion 52
[0045] Second hair follicle 521
[0046] Hole 53
[0047] Third inclined protrusion 54
[0048] Third hair follicle 541
[0049] Flat plate section 55
[0050] Fourth hair follicle 551
[0051] tufts 60
[0052] Hair bundle 61
[0053] Free End 611
[0054] Fixed end 612
[0055] Fix metal sheet 62. Detailed Implementation
[0056] Figure 2 shows a toothbrush according to a first embodiment of the present invention. The toothbrush of this embodiment includes a brush body 1 and a brush 2. The brush body 1 comprises a resin molded body that is integrally formed into an elongated shape. The brush body 1 has a handle 3, a neck 4 extending from the front end of the handle 3, and a head 5 disposed at the front end of the neck 4 along its long axis. The long axis refers to the direction in which the first virtual line L1 described later extends. Multiple bristle bundles 61 implanted on the bristle surface 5a of the head 5 constitute the brush 2, and the multiple bristle bundles 61 of the brush 2 are used to clean the oral cavity.
[0057] In the following description, the side of the head 5 with the bristle surface 5a (described later) will be considered the front of the toothbrush, and the side opposite to the bristle surface 5a will be considered the back side. Furthermore, the direction parallel to the bristle surface 5a and orthogonal to the length direction of the brush body 1 will be defined as the width direction of the toothbrush, and the direction orthogonal to the bristle surface 5a will be defined as the thickness direction. Additionally, the side with the head 5 will be defined as the front end, and the side with the handle 3 will be defined as the rear end.
[0058] The head 5 described above is the part that cleans the inside of the mouth by means of multiple hair bundles 61. It has a generally rectangular shape and rounded corners. In the first embodiment of Figures 3 to 5, the head 5 has a plurality of first inclined protrusions 51 and a plurality of second inclined protrusions 52. The plurality of first inclined protrusions 51 are arranged along the first virtual line L1 (i.e., the long axis direction) and protrude from the hair implantation surface 5a to form a first inclined surface 5b. The first inclined surface 5b is inclined in a first inclined direction, and the angle θ between the first inclined surface 5b and the hair implantation surface 5a is between 0 degrees and 30 degrees. A first hair implantation hole 511 is recessed inward on the first inclined surface 5b to implant hair bundles 61. The opening direction of the first hair implantation hole 511 faces the front end of the handle 3.
[0059] A plurality of second inclined protrusions 52 are arranged parallel to the plurality of first inclined protrusions 51, and the plurality of second inclined protrusions 52 protrude from the hair-planting surface 5a to form a second inclined surface 5c. The second inclined surface 5c is inclined in a second inclined direction, while the first and second inclined directions are opposite to each other. A second hair-planting hole 521 is recessed inward on the second inclined surface 5c to plant hair bundles 61. The opening direction of the second hair-planting hole 521 faces the rear end of the handle 3. The first inclined direction refers to the direction in which the second virtual line L2 extends, as described later, and the second inclined direction refers to the direction in which the third virtual line L3 extends, as described later.
[0060] Specifically, the first hair implantation hole 511 is inclined relative to the normal direction of the second virtual line L2 (i.e., the first inclination direction), while the second hair implantation hole 521 is inclined relative to the third virtual line L3. The normal direction (i.e., the second inclined direction) is inclined; and the hair bundle 61 has a plurality of hair clusters, each of which has a free end 611 and a fixed end 612. The fixed end 612 is opposite to the free end 611 and fixed to the hair implantation surface 5a. The free end 611 can be a plane, which can be parallel to the hair implantation surface 5a, or it can be inclined; in this embodiment, the hair clusters can be fixed to the first and second hair implantation holes 511 and 521 by fixing metal plates 62. In the embodiment shown in the figure, the fixing metal plate 62 is disposed in the first hair implantation hole 511, and its opposite ends abut against the inner wall surface. The fixing metal plate 62 is also inclined in the first inclined direction and abuts against the bent section of the hair clusters, fixing the hair clusters in the first hair implantation hole 511. The fixing metal plates 62 in the first hair implantation holes 511 have the same depth H5 and H6 between each part and the first inclined surface 5b, so that the hair clusters are subjected to more consistent and stable forces. In other embodiments, the fixing metal plate 62 can also be fixed in the first hair implantation hole 511 by other means, and the central axis A1 of the fixing metal plate 62 overlaps with the central axis A2 of the first hair implantation hole 511; and because of the tilting direction of the first and second hair implantation holes 511 and 521, the hair bundle 61 implanted in the first hair implantation hole 511 tilts towards the front end of the handle 3, that is, the free end 611 of the hair bundle 61 in the first hair implantation hole 511 tilts towards the front end (away from the handle 3); and the hair bundle 61 implanted in the second hair implantation hole 521 tilts towards the rear end of the handle 3, that is, the free end 611 of the hair bundle 61 in the second hair implantation hole 521 tilts towards the rear end (closer to the handle 3).
[0061] In this invention, the fixing metal plate within the hair implantation hole has the same depth between each point and the inclined surface of the boss, and the central axis of the fixing metal plate overlaps with the central axis of the hair implantation hole. This ensures that the hair tufts fixed within the hair implantation hole experience more consistent and stable force, improving the problem of uneven hair tuft tension and increasing the fixation strength of the hair tufts. Furthermore, the bristles with different inclination directions provide improved accessibility to hard-to-reach areas in the user's oral cavity (such as the lingual surface of the front teeth and the area behind the back molars), allowing more bristles to contact the outer surface of the teeth, improving the cleaning effect. The angle of the bristles also allows for gentle and controlled movements along the gum line.
[0062] The head 5 further has a plurality of third inclined protrusions 54, which are adjacent to the first inclined protrusion 51 or the second inclined protrusion 52. In the first embodiment shown in the figure, the plurality of third inclined protrusions 54 are disposed at the foremost side of the head 5. The plurality of third inclined protrusions 54 protrude from the hair implantation surface 5a to form a third inclined surface 5d, and the third inclined surface 5d is inclined toward the second inclined direction. A third hair implantation hole 541 is recessed inward in the third inclined surface 5d for implanting hair bundles 61. The opening of hole 541 faces the rear end of the handle 3, and the hair tuft 61 implanted in the third hair implantation hole 541 is inclined towards the rear end of the handle 3, that is, the free end 611 of the hair tuft 61 in the third hair implantation hole 541 is inclined towards the rear end (closer to the handle 3); of course, the plurality of third inclined surfaces can also be inclined towards the first inclined direction, and the opening of the third hair implantation hole faces the front end of the handle, so that the hair tuft implanted in the third hair implantation hole is inclined towards the front end of the handle, that is, the free end of the hair tuft in the third hair implantation hole is inclined towards the front end (away from the handle).
[0063] In the first embodiment of the present invention, the head 5 has three rows of first and second inclined protrusions 51 and 52 arranged in parallel with each other, wherein one row of second inclined protrusions 52 is located in the middle, and two rows of first inclined protrusions 51 are located on the two outer sides of the second inclined protrusions 52 respectively, and a plurality of third inclined protrusions 54 are arranged at the foremost side of the head 5 and cover each row of first and second inclined protrusions 51 and 52.
[0064] Furthermore, the first and second inclined protrusions of the present invention can also be arranged as shown in the second embodiment of FIG6 and FIG7. The head 5 further has a flat plate portion 55, which is adjacent to the first inclined protrusion 51 or the second inclined protrusion 52. In the embodiment shown in FIG, the head 5 has two flat plate portions 55, one of which is located inside the two rows of second inclined protrusions 52, and the other flat plate portion 55 is disposed at the foremost side of the head 5. The flat plate portion 55 has a plurality of fourth hair implantation holes 551 for implanting hair bundles 61. The fourth hair implantation holes 551 can be inclined relative to the normal direction of the first inclined surface or the second inclined surface. Of course, the fourth hair implantation holes 551 can also not be inclined.
[0065] Additionally, referring to the second embodiment in Figure 9, the free end 611 of the hair tuft 61 implanted in the first hair implantation hole 511 is formed as a continuous arc surface, while the free end 611 of the hair tuft 61 implanted in the second hair implantation hole 521 is a plane. The cleaning surface formed by the free ends of different shapes can increase the contact area with the teeth and clean the teeth more effectively. Of course, the free end of the hair tuft implanted in the second hair implantation hole can also be formed as a continuous arc surface.
Claims
1. A toothbrush, characterized in that, Including the brush body, which at least includes: A handle that is positioned along its long axis; The head extends from the front end of the handle, and the front of the head has a bristle-covered surface. A plurality of first inclined protrusions protrude from the hair-planting surface to form a first inclined surface, and the first inclined surface is inclined in a first inclined direction. A first hair-planting hole is recessed inward on the first inclined surface for planting hair bundles; and A plurality of fixed metal plates are used to fix the hair bundle into the first hair implantation hole. The fixed metal plates are inclined toward the first inclined surface, the central axis of the fixed metal plates overlaps with the central axis of the first hair implantation hole, and each part of the fixed metal plate has the same depth with the first inclined surface.
2. The toothbrush as described in claim 1, characterized in that, The angle between the first inclined surface and the hair-planting surface is between 0 and 30 degrees.
3. The toothbrush as described in claim 1, characterized in that, The first hair implantation hole is inclined relative to the normal direction of the first inclined surface.
4. The toothbrush as described in claim 1, characterized in that, It further has a plurality of second inclined protrusions, which are arranged parallel to each other and along the long axis direction, and protrude from the hair implantation surface to form a second inclined surface. The second inclined surface is inclined in a second inclined direction, and the first and second inclined directions are opposite to each other. A second hair implantation hole is recessed inward on the second inclined surface for implanting hair bundles.
5. The toothbrush as described in claim 4, characterized in that, The opening of the first hair implantation hole faces the front end of the handle, and the hair tuft implanted in the first hair implantation hole is inclined towards the front end of the handle; or, the opening of the second hair implantation hole faces the rear end of the handle, and the hair tuft implanted in the second hair implantation hole is inclined towards the rear end of the handle.
6. The toothbrush according to any one of claims 1 to 5, characterized in that, The head further has a plurality of third inclined protrusions adjacent to the first inclined protrusion. The plurality of third inclined protrusions protrude from the hair implantation surface to form a third inclined surface, and the third inclined surface faces the first inclined direction. A third hair implantation hole is recessed inward on the third inclined surface for implanting hair bundles.
7. The toothbrush according to any one of claims 1 to 5, characterized in that, The head further has a flat plate portion adjacent to the first inclined boss, the flat plate portion having a plurality of fourth hair implantation holes for implanting hair bundles.
8. The toothbrush as described in claim 7, characterized in that, The fourth hair implantation hole is inclined relative to the normal direction of the first inclined surface.
9. The toothbrush according to any one of claims 1 to 5, characterized in that, The hair bundle has a plurality of hair clusters, each of which has a free end and a fixed end. The fixed end is opposite to the free end and fixed to the hair implantation surface. The free end is planar.
10. The toothbrush as claimed in claim 9, characterized in that, The free end of the hair tuft implanted in the first hair follicle is formed as a continuous arc surface.