JP3239107U - interdental brush - Google Patents

Abstract

An object of the present invention is to provide an interdental brush capable of enhancing the cleaning effect. An interdental brush includes a brush head and a handle, the brush head having a central shaft and a joint, and a plurality of first bristles and a plurality of second bristles on the surface of the central shaft. The first bristle group has two first bristles, the second bristle group has two second bristles, and each of the first bristles and the adjacent second bristles are arranged in an axially staggered manner. connect to form a scraper. The handle is connected to the joint and through the scraper can increase the contact area with the teeth to enhance the cleaning effect. [Selection drawing] Fig. 1

Description

The present invention relates to brushes, and more particularly to interdental brushes.

Prior art

Conventional interdental brushes are roughly divided into two types, a thin type and a soft rubber type, depending on the bristles.

Thin type interdental brushes have low cleaning power because the bristles are thin and soft. Another thin type of interdental brush uses metal bristles that, when used, can bleed and damage gums if the slightest force is applied.

The soft rubber type usually has bristles made of silicone or rubber and has a larger contact area than the thin type. For example, as shown in U.S. Patent Publication No. US20180263741A1, comprising a base and a cleaning member, the base having a shank and a handle, and the surface of the shank being radially provided with tapered bristles of the cleaning member. An interdental cleansing device is disclosed. US Patent Publication No. US2008/0149134A1 is of a similar design.

The above prior art uses many tapered bristles to clean between the teeth, but the individual tapered bristles are pushed and bent when brushing the tooth surface. Therefore, in the prior art, when passing over the tooth surface, the tapered bristles only have line contact with the tooth, and the contact area is too small, resulting in poor cleaning effect. Also, the individual tapered hairs stand alone without support and are of insufficient strength.

Other prior art, such as US Patent Publication No. US2020/0260853A1, add flat brushes to increase the contact area, but these flat brushes still stand free from support and are therefore strong. Inadequate.

In addition, the prior art has problems such as relatively large operating resistance, which may damage the user's gums. Therefore, the prior art needs further improvement.

SUMMARY OF THE INVENTION To solve the above and other problems, an object of the present invention is to provide an interdental brush that can enhance the cleaning effect.

Another object of the present invention is to provide an interdental brush with a two-in-one effect in combination with dental floss.

Yet another object of the present invention is to provide an interdental brush with lower resistance to motion and less trauma to the gums.

Yet another object of the present invention is to provide an interdental brush in which the bristles and scrapers are connected to each other and have a relatively stable supporting effect.

Yet another object of the present invention is to provide an interdental brush, the scraper of which has a special distribution and slope design, which can have less resistance to movement.

To achieve the foregoing and other creative objectives, the interdental brush of the present invention includes a brush head and a handle, the brush head having a central shaft and a joint, and a plurality of nodules on the surface of the central shaft. One bristle group and a plurality of second bristle groups are arranged in an axial staggered manner, the first bristle group has two first bristles, the second bristle group has two second bristles, and these a first group of bristles and a second group of bristles are arranged perpendicular to each other, each of the first bristles connecting with the adjacent second bristles to form a scraper, the scrapers being arranged on both sides of the central axis; The ratio of the circumference of the central shaft with the scraper and the circumference without the scraper is 50%, and the handle is connected to the joint.

In one embodiment, the connection length between the scraper and the first bristles is 40-60% of the height of the first bristles.

In one embodiment, the handle is provided with a handle extension shaft and the central shaft covers the handle extension shaft.

In one embodiment, the handle is a plastic material and the brush head is silicone or rubber covering the handle extension shaft.

In one embodiment, the junction is hemispherical.

In one embodiment, the width of these first groups of bristles and these second groups of bristles narrows from one end of the junction to the other.

In one embodiment, the width of these first bristles and these second bristles narrows from 3 mm to 2 mm.

In one embodiment, the spacing between the adjacent first group of bristles and/or the adjacent second group of bristles is 1 mm, in particular between the adjacent first group of bristles and the adjacent second group of bristles. is 1 mm.

In one embodiment, the handle is connected to dental floss.

In one embodiment, the dental floss includes a first support rod, a second support rod and a floss connected between the first and second support rods.

In one embodiment, the handle extends from the first support rod of the dental floss, and the handle and the dental floss are the same integral material.

In one embodiment, each of the first bristles and the adjacent second bristles arranged perpendicularly to each other are arranged in a staggered manner so as to have height differences along the axial direction of the central axis.

In one embodiment, the scraper has a slope with respect to a radial cross-section of the central axis.

In one embodiment, the handle is provided with folds having recessed structures on both edges or sides.

In one embodiment, the handle is provided with a tongue scraper projecting from the surface of the handle to form a blade.

In one embodiment, the handle is provided in front of the blade with a recess below the surface of the handle.

1 is a perspective view of an interdental brush according to one embodiment of the present invention; FIG. 2 is a side view of an interdental brush according to one embodiment of the present invention; FIG. 3 is a cross-sectional view along line AA of FIG. 2 of an interdental brush according to one embodiment of the present invention; FIG. FIG. 4 is a partial enlarged view of the brush head of the interdental brush according to one embodiment of the present invention; FIG. 5 is a partially enlarged perspective view of an interdental brush according to one embodiment of the present invention; 6 is a partially enlarged view of the brush head of FIG. 2 of an interdental brush according to one embodiment of the present invention; FIG. 7 is a side view of an interdental brush according to another embodiment of the present invention; FIG. 8 is a partial perspective view of an interdental brush according to another embodiment of the present invention; FIG. FIG. 9 is an interdental brush according to another embodiment of the present invention;

1 is a perspective view of an interdental brush according to an embodiment of the present invention, FIG. 2 is a side view of an interdental brush according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention. FIG. 4 is a partial enlarged view of the brush head of the interdental brush according to one embodiment of the present invention; FIG. 6 is a partially enlarged perspective view of the interdental brush according to one embodiment of the present invention, and FIG. 6 is a partially enlarged view of the brush head of FIG. 2 of the interdental brush according to one embodiment of the present invention. With simultaneous reference to FIGS. 1 to 6, the present invention can be clearly understood from different angles and cross-sectional views. An interdental brush according to one preferred embodiment of the present invention includes at least a brush head (10) and a handle (20).

The brush head (10) has a central axis (11) and a junction (12). A plurality of first bristles (13) and a plurality of second bristles (14) are arranged in a zigzag pattern in the axial direction on the surface of the central shaft (11). The first bristle group (13) has two first bristles (131), and the two first bristles (131) are provided on the same extension line. The second bristle group (14) has two second bristles (141), and the two second bristles (141) are provided on the same extension line. The first group of bristles (13) and the second group of bristles (14) are arranged perpendicular to each other.

Each first bristle (131) and the adjacent second bristle (141) are connected to form a scraper (15). Preferably, each first bristle (131) is connected to an adjacent second bristle (141) to form the scraper (15) and is not connected to another second bristle (141). In this way, the interdental brush according to embodiments of the present invention can be combined with stability and support to reduce resistance when the user moves in and out between the teeth.

The placement of the scraper (15) allows the scraper (15) to be in contact with the teeth to increase the cleaning area and enhance the cleaning effect.

The placement of the scraper (15) allows the scraper (15) to help support the first (131) and second (141) bristles so that the first (131) and second (141) bristles (141) becomes straighter, is less likely to collapse when pressed, and can increase the frictional force with the teeth to enhance the cleaning effect.

The handle (20) is connected to the joint (12) and the interdental brush can be easily used by gripping the handle (20) with fingers. The handle (20) is preferably molded flat for easy grip.

Preferably, said joint (12) is hemispherical so that when joint (12) hits the gum, it does not injure the gum.

Preferably, the handle (20) can also be connected with dental floss (30), and the interdental brush combined with dental floss (30) has a two-in-one effect.

The dental floss (30) comprises a first support rod (31), a second support rod (32) and a floss (33) connected between the first support rod (31) and the second support rod (32). including.

A handle (20) extends from a first support rod (31) of the dental floss (30), the handle (20) and the dental floss (30) being one and the same material.

Referring to FIG. 3, preferably, the handle (20) may be provided with a handle extension shaft (21), and the central shaft (11) covers the handle extension shaft (21), thereby , so that the brush head (10) has better stiffness. The handle extension shaft (21) and the handle (20) are integrally injection molded of the same material, preferably plastic such as polystyrene, polyethylene. The brush head (10) is preferably a material softer than plastic such as Silicone or TPE (Thermoplastic Elastomer) or TPR (Thermoplastic Rubber).

Preferably, the handle (20) is a plastic material, and the brush head (10) is a silicone or rubber material covering the handle extension shaft (21), so that the brush head (10) has a soft surface material. It has excellent rigidity.

As shown in FIG. 3, these first bristles (13) and second bristles (14) are arranged perpendicular to each other and visually form an X-shape in the axial direction. Here, the first bristles (131) and the second bristles (141) are staggered in the axial direction on the surface of the central shaft (11). That is, as shown in the radial section of FIG. 3, said first bristles (131) and said second bristles (141) are not arranged in the same horizontal plane.

Also, please refer to Figures 3, 4 and 6 at the same time. The scraper (15) has a slope with respect to the radial cross-section of the central axis (11). That is, as shown in FIG. 6, visually, the scraper (15) rotates intermittently and obliquely downward. Thereby, the scrapers (15) are arranged symmetrically and evenly on both sides of the central axis (11), as shown in FIG. 3, so that the scrapers (15) of the central axis (11) are arranged The ratio of circumference to circumference without scraper (15) is 50% each. Therefore, when using the interdental brush, the teeth on both sides of the gap can be cleaned simultaneously. In addition, the non-placed portion has a resilient cushioning space, allowing the user to move up and down between the teeth with little force.

In addition, since the scraper (15) is provided obliquely with a slope, the frictional force of operation can be reduced, and the user can operate it more easily.

Preferably, the connecting length (C) of said scraper (15) and said first bristles (311) is 40-60% of the height (B) of said first bristles, whereby scraper (15) contacts the tooth surface to enhance scraping ability, and the ends of the first bristles (131) and second bristles (141) also protrude from the scraper (15) to reach deep into the gingival sulcus to clean the deep roots. can do.

In principle, the lengths of the first bristles (131) and the second bristles (141) of the same group are the same, so that the connecting length of the scraper (15) and the second bristles (141) is also the second It can be seen that it is 40-60% of the height of the hair (141).

More preferably, the width of these first groups of bristles (13) and these second groups of bristles (14) narrows from one end to the other end (terminal end) of said junction (12), whereby The interdental brush can easily enter the interdental spaces.

Continuing to refer to FIG. 3, the tuft width (C) in the figure is the distance between the ends of the two first bristles (131) of the first bristle group (13) closest to the junction (12). is shown. Referring to Figures 4 and 5, the width of these first group of bristles (13) and these second group of bristles (14) narrows from one end to the other of the junction (12). . As a result, the tip of the interdental brush is narrow and can easily enter the interdental spaces. Depending on the size of the gap between the teeth, the first (13) and second (14) bristles of appropriate length can clean the teeth on both sides of the gap. In addition, the scraper (15) can scrape the tooth surface in a surface contact manner, and the ends of the primary bristles (311) and the secondary bristles (141) are also used to scrape the crevices of the gums for deep cleaning. can go deep into

Referring to Figure 6, preferably the maximum width (E) of these first group of bristles (13) and these second group of bristles (14) narrows from 3 mm to a minimum width (F) of 2 mm, which This allows it to be suitable for most inter-tooth gap widths.

The spacing (G) between adjacent bristles is preferably 1 mm. For example, the distance between two adjacent first bristle groups (13) is 1 mm, and the distance between two adjacent second bristle groups (14) is also 1 mm, this size setting provides a good cleaning effect. have.

7 is a side view of an interdental brush according to another embodiment of the present invention; FIG. 8 is a partial perspective view of an interdental brush according to another embodiment of the present invention; FIG. FIG. 9 is an interdental brush according to another embodiment of the present invention; Another embodiment of the present invention will now be described with reference to FIGS. 7-9.

Preferably, the handle (20) may be provided with a fold (40). The folding part (40) has concave structures on both edges or both sides, which can be easily folded by the user. After being folded, the brush head (10) and dental floss rod (30) of this example can be used independently as shown in FIGS.

Also, the handle (20) may be provided with a tongue cleaning portion (50). The tongue scraping portion (50) may be structured to protrude from the surface of the handle (20) to form a blade (51), which a user can use to remove tongue coating. In addition, in front of the protruding blade (51) of the tongue cleaning part (50), a recess (52) may be provided in advance, thereby increasing the height of the blade (51) and reducing the thickness of the tongue coating. It can improve the removal effect.

Finally, the handle (20) may be provided with a logo portion (60). The logo portion (60) may be a structure recessed into the surface of the handle (20) where the user can print and highlight a trademark.

10 brush head 11 central shaft 12 junction 13 first bristle group 131 first bristle group 14 second bristle group 141 second bristle group 15 scraper 20 handle 21 handle extension shaft 30 dental floss 31 first support rod 32 second support rod 33 floss 40 Folded portion 50 Tongue polishing portion 51 Blade 52 Recess 60 Logo portion B Height of first bristle C Connection length D Width of bristle group E Maximum width F Minimum width G bristle group spacing

Claims (13)

A brush head (10) having a central axis (11) and a junction (12), a plurality of first bristles (13) and a plurality of second bristles ( 14) are staggered in the axial direction, the first bristle group (13) has two first bristles (131) and the second bristle group (14) has two second bristles (141) The first bristles (13) and the second bristles (14) are arranged perpendicular to each other, and each of the first bristles (131) is connected to the adjacent second bristles (141). form a scraper (15), the scrapers (15) are arranged on both sides of the central shaft (11), the circumference of the central shaft (11) with the scrapers (15) and the circumference without the scrapers (15) a brush head (10) having a circumference of 50% each;
a handle (20) connected to said joint (12). Interdental brush according to claim 1, wherein the connecting length between the scraper (15) and the primary bristles (131) is 40-60% of the height of the primary bristles (131). An interdental brush according to claim 1, wherein the handle (20) is provided with a handle extension shaft (21) and the central shaft (11) covers the handle extension shaft (21). Interdental brush according to claim 3, wherein the handle (20) is plastic material and the brush (10) is silicone or rubber covering the handle extension shaft (21). Interdental according to claim 1, wherein the width of these first groups of bristles (13) and these second groups of bristles (14) narrows from one end to the other of the joint (12). brush. Interdental brush according to claim 1, wherein the handle (20) is connected to dental floss (30). The dental floss (30) comprises a first support rod (31), a second support rod (32) and a floss (33) connected between the first support rod (31) and the second support rod (32). 7. The interdental brush of claim 6, comprising: The handle (20) extends from the first support rod (31) of the dental floss (30), the handle (20) and the dental floss (30) being the same integral material. An interdental brush according to claim 7. The first bristles (131) and the adjacent second bristles (141) arranged perpendicularly to each other are arranged in a staggered manner so as to have a height difference along the axial direction of the central axis (11). The interdental brush of claim 1, wherein the interdental brush is Interdental brush according to claim 1 or 9, wherein the scraper (15) has a slope with respect to a radial cross-section of the central axis (11). Interdental brush according to claim 1, wherein the handle (20) is provided with folds (40) having recessed structures on both edges or both sides. Interdental brush according to claim 1, wherein the handle (20) is provided with a tongue scraping portion (50) projecting from the surface of the handle (20) and forming a blade (51). 13. Interdental brush according to claim 12, wherein the handle (20) is provided in front of the blade (51) with a recess (52) below the surface of the handle (20).

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