TW200936077A - Novel device - Google Patents

Abstract

Toothbrush heads with bristle tufts comprised of longer tapered bristles and shorter non-tapered bristles in respective embodiments comprising tufts which include both tapered and non-tapered bristles, and comprising an outer ring of tufts of non-tapered bristles round an inner region of tufts of longer tapered bristles.

Description

200936077 IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD OF THE INVENTION The present invention relates to the structure of a toothbrush', particularly to the bristles of a toothbrush. In particular, the present invention relates to an improved toothbrush bristle structure comprising a hybrid brush filament. [Prior Art] It is well known that a toothbrush includes a brush head for extending into a user's mouth, and a handle that can be held while the toothbrush is being used, usually between the brush © head and the handle With a neck area. The toothbrush head generally has a surface, the term "bristle surface", from which the bristles extend from the lower end of one of the bristle surfaces to the upper end of the bristle surface. Well-known, generally including bristle filaments, "made of a harder but more flexible material, a plurality of bristle filaments comprising tufts of bristles arranged in the form of tufts of bristles extending from the surface of the bristle. • The polyamide nylon is frequently used as a toothbrush bristle material. s sfc However, in most toothbrush tissues, the bristles have the same cross section along their entire length from the lower end to the upper end. It should be understood that the use of tapered bristles reduces the cross section toward the upper end thereof. Tapered bristles with a finer upper end and different bending and flexibility characteristics than non-tapered bristles. In particular, it is known that tapered bristles are very effective in the space between the teeth, the so-called "neck" space. For example, such bristles are disclosed in Em 234 525, EP-A-1 415 572 'US-A-6,546,586 'WO-A-97/42853 'WO-A-97/42854 'WO-A-01/32053, WO-A-8274 is included in the ΕΡ- -0 596 633. A particularly relevant configuration of tapered bristles on the surface of the bristles is also known. 131995.doc 200936077, for example, US-A-6,546,586 discloses a toothbrush head in which each tuft comprises more brush filaments made of polybutylene terephthalate in the form of short brush filaments, etc. The cross section 'long brush filaments taper to the upper end. It is known from the disclosure of other combinations of long and short bristles in a tuft of bristles, such as US-A-3,103,679, WO-A-96/16571 and DE-A-35 28 596. There are usually two ways to produce this tapered bristles. One is chemically rotted to the end of the 'hair brush'; the other is to mechanically wear it into a cone. It is difficult to accurately mechanically wear the brush wire in the original position on the toothbrush head. The toothbrush disclosed in WO-A-96/16571 is not commercially successful due to its poor mouth feel. SUMMARY OF THE INVENTION It is an object of the present invention to provide an improved toothbrush head that combines a tapered brush wire, such as to provide tooth cleaning, particularly in the collar space, the rim and the underarm entrance, and the toothbrush brush The head also has manufacturing advantages. Other objects and advantages of the present invention will become apparent from the following description. According to a first aspect of the present invention, a toothbrush head is provided having a bristle surface, and a plurality of bristle bundles including a plurality of bristles extend from the bristle surface in a bristle direction. Each tuft of bristles comprises short bristles having a cross-section that is not tapered from its end toward its upper end, and a long bristles that taper from its lower end toward its end, the conical bristles starting from the short bristles The upper end is V-, and wherein the length of the equal length bristles beyond the upper ends of the short bristles is 4 to 7 mm. Pi, · preparation - the length of the long tapered bristles of the toothbrush head exceeds the upper end of the short bristles to a distance of 7 mm to 'help to use mechanical wear to the upper end of the long bristles 131995.doc 200936077 to make the toothbrush brush s shell, In particular, when the bristle filament is made of a preferred polyamine, such as nylon, especially a material polyamide fiber (TynexTM) ^ This is a special case, since the end of the bristle filament can be worn into a cone The current state of optimisation of the machine available, as well as the nature of the material of the brush, such as polymethylamine fiber (TynexTM). Preferably, the length of the long bristles beyond the upper end of the short bristles is greater than 4 'mm up to 7 mm. Typically, the short bristles extend from the surface of the bristles by a length of 9 + 八 1 mm and the length of the short bristles extending from the surface of the bristles is ® 13 + / · 1 mm. Usually, the cross section of the bristle wire is round, generally 〇1_〇25 mm, such as a maximum of 0.15_〇.2〇 mm. This is a typical standard size for a toothbrush brush. Usually, the length of the long bristles which is more than the entire length of the upper end of the shorter bristles is tapered. In accordance with a second aspect of the present invention, a toothbrush head is provided having a bristled surface' a plurality of bristles comprising a plurality of bristles extending from the bristles in a 'J' Each tuft of bristles comprises short bristles having a cross-section that is not tapered from its lower end toward its upper end, and a long bristles that taper from its lower end toward its upper end. The taper of the elongate bristles begins with the short bristles Above the upper end, and wherein each tuft of bristles is mounted on an opposing tuft of bristles, the minimum cross-sectional dimension of the bristles of the bristles across the bristles is in the range of millimeters. The use of a bundle of bristles within the size range is generally circular and straight, in the range of which it is advantageous to combine the short bristles with the long bristles in the tuft of bristles. It is believed that the assembly has a packing density of 131995.doc 200936077. The degree makes the short bristles of the county resistant to "on the fork, the long bristles" is good for the cleaning effect of the teeth, when facing the same external force, The long brushed long bristles are more flexible than the short bristles. In particular, the above phenomenon can be found in combination with the first detaching spear of the present invention and the bristles of the toothbrush head. The toothbrush tuft hole has a standard depth of 3.4-3.8 mm. A: 3.6 mm brush bundle hole is suitable for the toothbrush bundle of the toothbrush head of the first aspect of the invention. In a third aspect, a toothbrush head is provided having a second bristle surface 'a plurality of bristle bundles comprising a plurality of bristles extending from the bristle surface in a direction of the bristles. Each bristle bundle comprises short bristles having a cross section not from the basin

The lower end tapers toward its upper end and a long bristles that taper from its lower end toward the upper end of A. The taper of the equal length bristles begins above the upper ends of the short bristles' each bristle bundle contains 2-12 long bristles. It preferably extends from the surface of the bristles, preferably 20-30 short bristles and 2-12 long bristles extending from the bristles surface. In the tuft of bristles, it is advantageous to provide a desired mouth feel in the range of the brush filaments and to allow the long bristles to enter between the teeth. The long bristles are too small, the user can't feel the comfort, and too much is not easy to get the bristles between the teeth. It has been found that 5-7 long bristles, preferably 26-28 short bristles and root long bristles, are in an appropriate amount to provide an optimum effect. Therefore, in the aspect of the present invention, the first and third aspects are combined with the brush head, and a toothbrush head is provided having a brush surface 'a plurality of bristles including a plurality of bristles The bundle of bristles from the bristles of the bristles 131995.doc 200936077 " extending bristles comprises short bristles having a cross-section that is not tapered from its lower end toward its upper end, and a long bristles that taper from its lower end toward its upper end, The taper of the elongate bristles begins with the length of the long bristles beyond the length of the short end at a length of 4 mm to between and wherein each tuft of bristles comprises 2-12 long filaments extending from the bristles. In the fourth aspect, preferably, there are 2 〇 3 〇 short bristles and 2 12 long bristles extending from the surface of the bristles. In a fifth aspect of the invention, the above three aspects are incorporated into the toothbrush. Thus, in the fourth aspect, a toothbrush head is provided having a bristle surface, and a plurality of bristle bundles including a plurality of bristles extend from the bristle surface in a bristle direction. Each tuft of bristles comprises short bristles having a cross-section that is not tapered from its lower end toward the upper two ends, and a long bristles that are formed from its lower end toward its upper end, shaped such that the taper of the long bristles begins with the short bristles Above the upper end, and t the length of the long bristles beyond the upper end of the short bristles is * mm to 7 mm, wherein each tuft of bristles is mounted in the bristles, the minimum size of the hole is between (1) and 4 mm 'And each of the tufts comprises 20-30 short bristles and 2-12 long bristles extending from the bristle surface. In the tufts of bristles, the short and long bristles can be woven in a variety of ways. For example, the long tufts may be randomly arranged in the short tufts' or the long bristles may be arranged relative to the central upper and lower axes of the bristle bundles, e.g., the central region includes primary or all of the long tufts. - In the toothbrush head of the present invention, the tufts of bristles may be arranged on the surface of the bristles in a pattern which is different from the conventional pattern. I31995.doc 200936077 However, in the preferred embodiment, the tufts of bristles comprise short bristles having a cross-section that is not filament-shaped from its lower end toward its upper end, and a long bristles that are filament shaped from its lower end toward its upper end. The taper of the long bristles begins above the upper ends of the short bristles. 'The bristles may be arranged on the surface of the bristles according to the pattern'. The pattern comprises the tufts of bristles - the internal bristle bundles and only such shorts The longitudinal side of the brush bundle of the brush is flanked. Moreover, in the pattern, the inner tufts of the tufts of bristles are completely surrounded by a bundle of bristles comprising only the short bristles.

❹ On the surface of the bristles of the toothbrush head of the present invention, there are other known types of bristles, such as common materials made of known materials such as nylon, such as the general type of polyamine fibers. It also has a dental _ or _ silver silver cosmetic component that extends from the bristles surface, such as a known type of synthetic rubber component. A sixth aspect of the present invention provides a tapered and non-tapered 4a dkl aj_L4* step relative structure. A sixth aspect of the invention according to the present invention, a toothbrush head is provided, and the basin has: a plurality of bristle surfaces A bundle of bristles comprising a plurality of bristles extends from the bristles of the bristles: in the direction of the bristles. The tuft of bristles is arranged in a pattern on the bristles of the bristles. The figure comprises: a pair of inner tufts of bristles having a plurality of tufts (four) bundles containing relatively long bristles, which vary from a lower end to a second and a plurality of relative An outer tuft of bristles consisting of relatively short bristles. The bristles of the bristles are arranged by the entire relatively long bristles of the plurality of relatively outer tufts as the outer peripheral tufts, 131995.doc 200936077 along the bristles of the pattern of two or more Outside. For example, the plurality of opposing outer tufts can be arranged as the outer bristles along the laterally opposite side of the tuft pattern. For example, the outer tuft of bristles can be arranged as a peripheral bundle of bristles depending on the full side of the inner tuft of bristles. The upper end of the bristle bundle pattern tuft farthest from the toothbrush handle may be at the end of a surface, the "tip""the outer brush, e.g., a plane, along with the handle away from The longitudinal distance 'increased the distance from the bristle surface. For example, in the brush Ο

The tip of the head has an outer tuft of tufts, such as a polygon of the outer bristle bundle, whose upper end is on the surface. The plurality of opposing outer tufts of bristles may comprise bristles that are non-tapered in cross-section along their lower length. The plurality of relatively outer tufts of bristles may comprise a bundle of bristles having a uniform cross section of the upper and lower lengths of the tufts. The distance between the relatively long bristles and the relatively short bristles extending from the surface of the bristles to the length of the bristles is 2-7 mm, typically 2_4 mm. Typically, the short outer tufts are 9-U mm long. All of the bristle filaments on the toothbrush head in the fifth aspect of the invention may be made of polyamide, such as nylon, especially the material polyamide fibers. The handle and other parts of the toothbrush having the brush head of the present invention are different from the conventional tooth (four), and can be made of a material such as a polypropylene material. The brush head is completely associated with the toothbrush handle, for example, by an intermediate full neck region or alternatively associated with the toothbrush handle. The toothbrush head of the present invention can be used in a manual or electric toothbrush. 131995.doc 200936077 The toothbrush head of the present invention can be made by a process in which: 1" the long bristles are inserted into the brush head in the non-conical state = the bristle beam hole And the upper end of the long bristles extending beyond the length of the short bristles of the long bristles is mechanically worn into a tapered shape. Machines for making such mechanical wear are well known in the art of making the toothbrush. The filament can be first treated as a cone-shaped form of this commercially available tapered bristles.

The ends of the same shape of the brush filament are tapered at both ends, and are generally mounted on the surface of a toothbrush bristles, by removing it from the middle into a compact, and using a traditional "tin firmware" Knee, ΤΤ, Λ 细 细 中间 中间 | | ” ” 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间 中间The brush filaments can include this double-ended homomorphic brush, traditionally splicing it into a -"U" type and inserting the curved portion of the "U" into it: by means of a conventional metal anchor Keep it in it. In this configuration 各 'the length of the U'-type bristles provides two bristles extending from the bristles. The single-ended brush filament is tapered only at the end, and the "W-toothbrush brush surface" is moved into a shape by approaching the non-tapered end and utilizing a conventional "anchor" The closed area of the J-shape is mounted in one of the holes of the bristle surface. Or, using the well-known " error-free firmware, or " Unsafe Mu invented the bristle bundle of the toothbrush head (4) (4) M H Arts' part will be installed in the brush head Human-injection mold, and the plastic material of the brush head is injected into the mold so that the 131995.doc -13-200936077 brush filament is embedded in the brush head. The tapered tuft of bristles can be mounted in the dental brush head of the present invention in a conventional manner. In the toothbrush head of the sixth aspect of the invention, the single-ended brush filament is preferred when a preferred bristle density is provided in the long tuft. [Embodiment] Referring to Figures 1, 2 and 3, a toothbrush head 1〇 is integrally shown, which has a ❹

The bristle surface tufts 12 (-) include a plurality of bristle filaments extending from the bristle surface in a bristle direction "B" which is generally perpendicular to the bristle surface. The brush filament is made of the nylon material 枓 polyamide fiber. The lower end of each brush 2 is adjacent to the bristle surface; the opposite upper end is away from the bristle surface. Each tuft of bristles 12 includes short bristles 13 having a cross-section that does not taper from its lower end toward its upper end, and a long bristles that taper from its lower end toward its upper end. (4) 2, the long bristles are tapered toward the upper end by a conical shape, and the taper of the long bristles 14 starts above the upper end of the short bristles 13. The length "d, in Fig. 2, that is, the long bristles μ extend beyond the length of the upper end of the short bristles 13 by a large (four) millimeter. The short bristles 13 extend from the surface of the bristles to a length of about 9 mm, and the long bristles extend the surface of the bristles to a length of about 13 mm. The short bristles, the bristles of the long bristles 14 and the length of the upper end of the short bristles, the cross section of which is circular, the diameter is (3) 仙米", a typical standard size of the toothbrush brush . Each of the bristles 2 is mounted in a corresponding tuft of bristles having a minimum dimension in the length direction of the bristles perpendicular to 131995.doc -14 - 200936077, in the range of 174 mm. The bristle beam aperture 15 has a total depth of 36 mm and a cylindrical portion depth of 3.3 mm, which is shallow conical. It is a standard depth and contour. Each bristle bundle 12 includes a double-ended, identically shaped bristle filament, the ends of which are folded into a "U" shape, the closed "U" inserted into the bristle beam aperture 15 by a metal "wrong firmware" 16 The bundle of bristles is secured in aperture 15, which is typically used in toothbrush construction. In this configuration, each of the bristle filaments is brought into this "u" shape, thus providing two types of bristle filaments 3, 14 extending from the bristle surface n. Each tuft of bristles 12 comprises 20-30 short bristles and 2-12 long bristles which are extended from the bristle surface U. In the tuft of bristles 12 as shown in Fig. 3, the equal length bristles 14 are arranged around the central axis of the bristle bundle 12, such as 'random arrangement' or the main bristles are mounted as shown in FIG. The long brush has a region, and the short bristles 13 surround it as a sheath. The toothbrush head 10 of the present invention is integrally formed with a neck region 7 by which the head is completely joined to a handle (not shown). Between the neck (4) and the head 10 is a flexible link 18 of known construction comprising a finely divided region of the neck 17 surrounded by a resilient spherical surface. A toothbrush according to one of Figures 1 to 3 above was experimentally evaluated and compared to the other two commercially available toothbrushes without tapered bristles as described below. Test 1: Adjacent entrance effect, IAE method: Two toothbrush products, one toothbrush has a toothbrush head as shown in Figures i to 3 'commercial brand is "Dr Best zwischenzahnTM" toothbrush (herein referred to as test 5 Toothbrush ")' and S outside the two toothbrushes, respectively, Oral-B Cross Action 131995.doc 200936077 〇 toothbrush (here called "toothbrush A"), and 〇ra丨_B Indicat〇r 35] toothbrush (herein referred to as "toothbrush"), both of which are medium-sized textured bristles that will be evaluated in this study. All test toothbrushes are supplied by Dexlin GlaxoSmithKline Personal Care Limited. Each product group provides six toothbrushes. For example, the test toothbrush and the toothbrush, each toothbrush needs to be tested 4 times, and each toothbrush set a total of 24 tests. Prior to testing, the brushes were placed in a laboratory at a temperature of 67_7 超过 for more than 48 hours. The laboratory instruments used were designed and manufactured in accordance with Nygaard Ostby, Edvardsen and Spydevold. The brushing technique independently evaluates each toothbrush in a vertical and horizontal brushing motion, the tooth shape simulates the anterior and posterior teeth, and the brush weight of 250 grams. The brushing device was set to brush for 15 seconds at a frequency of 2 strokes per second with a stroke of 5 mm. Use the vernier caliper to record the maximum width of the artificial spots removed in the early centimeters (adjacent entrance effect, ΙΑΕ). The same examiner performs all evaluations. An analysis of variance (ANOVA) was performed for the average score of each toothbrush product. A two-sample test will be used to identify significant differences between toothbrushes. Objective During the brushing procedure, a primary method was used in the laboratory to assess the ability of the bristles to penetrate between simulated teeth and remove artificial spots, ie, the adjacent entrance effect (IAE). Both vertical and horizontal brushing patterns were evaluated on the tooth profile of the front and back teeth before the simulation. The results are then combined to determine the overall effect of the toothbrush products evaluated. The overall effect in the IAE assay was compared to clinical removal of spots. The purpose of this study was to evaluate the effectiveness of the test toothbrush and brushes A and B in the IAE assay procedure. 131995.doc -16· 200936077 The effect of the adjacent entrance on the front or back teeth before shaping, as shown in Table 1 below. The average IAE of the test toothbrush is significantly (p<0.001) higher than the toothbrushes A or B. Table 1 Tooth shape test toothbrush toothbrush A toothbrush B mean (standard deviation) anterior teeth 1.21 (0.06) 0.89 (0.06) 0.67 (0.07) posterior teeth 1.29 (0.10) 0.99 (0.10) 1.03 (0.10) results in shaping The effect of the adjacent entrance on the front or back teeth, as shown in Table 2 below. The brushing of the anterior and posterior teeth was vertical and the average IAE of the test toothbrush was significantly (p<0.001) higher than the toothbrushes A or B. Table 2 Toothbrush shape Test toothbrush Toothbrush A Toothbrush B Average (standard deviation) Front teeth 1.35 (0.05) 0.84 (0.08) 0.78 (0.06) Back teeth 1.50 (0.02) 0.99 (0.04) 1.03 (0.04)

The overall performance average combined with all brushing patterns and tooth shapes, as shown in Table 3, the overall IAE average (p<0.001) of the test toothbrush was calculated to be higher than the overall IAE average of the toothbrush A or B. Table 3 Test toothbrush Toothbrush A Toothbrush B Average (standard deviation) 1.34 (0.12) 0.89 (0.10) 0.82 (0.16)

The test toothbrush was very significantly high (p < 0.001) to the toothbrushes A and B in all of the IAE experiments performed. This test toothbrush is expected to be more effective for clinical removal of adjacent spots than toothbrushes A and B 131995.doc -17- 200936077. Test 2: Purification of the rim Two laboratory methods have been developed to measure the rim and underarm of the toothbrush in these anatomical regions. The edge cleaning method (GMC) uses a wet spot to cover the pressure sensitive paper placed on the simulated back tooth to compare the ability of the toothbrush product to remove artificial spots at the junction of the analog gum tissue. The second method, Silver Under Entrance Effect (SAE), utilizes an artificial spot to cover the pressure sensitive substrate to evaluate the toothbrush bristles under wet brushing conditions, penetrating the lower portion of the dental silver tissue surrounding the posterior tooth outer shell and removing The ability to make artificial spots. The maximum depth of the removed deposited spot is defined as the underarm entry effect (SAe). The purpose of these studies was to evaluate the silver edge cleaning and underarm entrance effects of the test toothbrush and toothbrushes A and B. Methods and Materials The products tested in this experiment were test brushes consistent with the above, with toothbrushes A and B. Each product group provides six toothbrushes, for example, the test toothbrush and toothbrushes A and B. Each toothbrush is tested four times and a total of 24 tests are performed for each toothbrush design. This laboratory instrument helps KNygaard_

The design of Ostby, Edvardsen and Spydevold. The simulated gums are made from self-setting tooth powder. The guidelines for dental textbooks developed the marginal anatomy between the gums made of dentifrice and the outer shell of the tooth. According to the method of brushing, the brushing method is a horizontal brushing mode, analogous to the resulting posterior teeth and an application. 〇g brushing tooth weight. Silver Edge Cleaning This brushing method is an independent evaluation of each toothbrush, in a horizontal brushing die 131995.doc 200936077, the tooth shape is analogous to the back teeth, and a 500 gram brushing weight. The toothbrush to be tested was aligned with the small projection of the silver edge, and the brushing device was set to brush for 6 seconds at a frequency of 2 times per second with a stroke of 15 mm. To clean the gingival margin (GMC), the length of the removed precipitated artificial spot is recorded at the junction of the analog gingiva and the pressure sensitive paper. An observer measured in units of millimeters and observed at a magnification of 3 inches. Assuming unequal variance, the data was analyzed using a test to measure the significance between the three groups. Under the entrance

各 Each toothbrush to be tested is protruded from the silver edge, and the brushing device is set to brush for 3 seconds at a frequency of 2 times per second with a stroke length of -15 mm. The most severe degree of the removed (four) spot is recorded on an artificial spot covering, the substrate is placed under the mold (iv) silver, and the back teeth are obtained around the shape. An observer observes the record at a single rate. Calculate the description statistics (the comparison of the flat planting with the 3 Χ 放 对该 与 与 与 与 与 ( 与 描述 描述 描述 描述 描述 描述 描述 描述 描述 描述 描述 描述 描述 描述 描述 描述 描述 描述 描述 描述 描述 描述 描述 描述 描述 描述 描述 描述 描述 描述 描述 描述 描述 描述;〇.〇〇1), toothbrush Α compared with Β

The GMC of the test toothbrush is shown in Tables 4 and 5 below.

131995.d〇c •19· 200936077

Conclusion These laboratory studies are between the toothbrush of the present invention and the three toothbrush products.

Performed to assess the degree of ice on the edge of the cleaning effect (GMC) and the removed artificial spot ® . In laboratory studies, the Dr Best ZwischenzahnTM brand toothbrush was found to be significantly more effective (p<>) than the toothbrushes A and B in terms of the effectiveness of the gingival margin cleaning and the under-silver gap. Referring to Figures 4, 5 and 6, another toothbrush head 2 is shown in its entirety with a bristle surface 21 which, in the direction of the bristle "B", extends from the bristle surface. The head 20 extends longitudinally integrally to define a neck region 23 that connects the brush to a handle 24. The head 2, the neck region 23 and the handle 24 are made of a plastic material, and also have a rubber handle pad 25. The toothbrush shown in Figures 4, 5 and ® 6 is a manual toothbrush. The tufts 22 are arranged in a pattern comprising a relatively inner portion. A bundle of tufts of bristles having a plurality of bristle tufts 26, each bundle of tufts comprising relatively long bristles that taper from a lower end to an upper end thereof, and a plurality of opposing outer tufts of bristles, which are comprised of relatively short bristles 27. The tuft of bristles 26 consists of solid relatively long bristles which taper. The plurality of outer bristle bundles 27 can be worn by the female row, and a bundle of bristles forming an outer peripheral ring surrounds the entire sides of the opposing inner tufts 26. The plurality of opposing outer tufts 27 are comprised of the entire tuft set 131995. doc -20- 200936077 u The tufts are composed of bristles having a uniform cross-section along their upper and lower lengths. • The short outer bristles 27 are approximately 丨〇 mm and the long internal bristles 26 are approximately 13 mm long. The tufts of the bristle bundles 26, 27 are made of the polyamide material nylon which is generally sold under the name Polyamide Fiber and which is typically 0.1-0.25 mm in diameter. The long tapered brush wire 26 is a single-ended tapered brush wire. Figure 5 illustrates a toothbrush head 'in this figure the end of the tuft pattern is remote from the 4 toothbrush handle 24 "tip", the outer bristle bundle 28 is at the upper end in a plane - The longitudinal distance of the handle 24 increases the distance from the bristle surface 2!. The tufts 28 are arranged with as much of the outer bristles (4). [Simple description of the drawing] This is described by way of example ' and reference is made to the following: 〇 Figure 丨 is a perspective view of one of the toothbrush heads of the present invention. Figure 2 is a cross-sectional view of a portion of the toothbrush head of the present invention. Fig. 3 is a cross-sectional view of the bristle bundle passing through the brush head of Fig. 2, taken along the A-A direction of Fig. 2, and seen in the direction of the arrow. - Figure 4 is a side view of another toothbrush head of the present invention. Figure 5 is a side elevational view of another toothbrush head of the present invention. Figure 6 is a plan view of the bristle surface of the toothbrush head of Figure 5. [Description of main component symbols] 10 Brush head J31995.doc -21 - 200936077 11 12 13 14 15 ' 16 . 17 18 Ο 20 21 22 23 24 25 26 ❹ 27 28

A B surface bristles short bristles long bristles holes metal" anchors neck area flexible connecting rod brush head surface bristle bundle neck area handle handle pad long bristles short bristles bristles arrow arrow 131995.doc -22

Claims (1)

200936077 X. Patent application scope: I A toothbrush brush head having a brush brushing surface, a plurality of surfaces including a plurality of bristles, J hair bundles extending from the brush surface along a brush. ^ ^ ^ hair direction, each The bristle bundle comprises a right short short bristles, the cross section of which is not shaped, and the lower end is tapered toward the upper end thereof toward the upper end thereof, and the taper of the equal length bristles starts above the upper ends of the short bristles. It is characterized by the length of the bristles beyond the short bristles 'm to 7 mm. The length of the upper end of the hair is 4 millimeters. 2. The toothbrush head of claim 1 is characterized in that the short hairs are 9 +/- 丨 mm extending from the surface of the bristles. And the length of the 4 short bristles extending from the surface of the bristles is 13 +/- 1 mm. 3. A toothbrush head having a (four) hair surface, a plurality of bristles comprising a plurality of bristles extending from the surface of the bristles along a sneaker a, and a plurality of bristles comprising a plurality of bristles Short bristles whose cross-sections are not tapered from their lower ends toward their upper ends. 4. Shapes and a number of long bristles that taper from their lower ends toward their upper ends, the cones of the equal lengths begin at these Above the upper end of the short bristles, wherein each tuft of bristles is mounted in a tuft of bristles that traverses the longitudinal-minimum dimension of the bristles within a range of 17-24 mm. a toothbrush head having a bristle surface, a plurality of bristle bundles comprising a plurality of bristles extending from a bristle surface in a bristle direction, each bristle bundle comprising a plurality of short bristles having a cross section that is not formed from a lower end thereof toward an upper end thereof a tapered 'and a plurality of long bristles tapered from a lower end thereof toward an upper end thereof, the conical bristles starting from above the upper ends of the short bristles, each bristle bundle comprising 2-12 extending from the bristles surface Long brush hair. 131995.doc 200936077 Wire 5: The toothbrush head of claim 4, characterized in that it has 20-30 short bristles of long brush filament extending from the surface of the bristles. 6. The toothbrush head of claim 4 or 5, characterized in that it has a crepe 0. 7. a toothbrush head, and has a brush surface, the plurality of bristles including a plurality of bristles from the bristles surface along a bristle direction Extendingly, each bristle bundle comprises a right-drying bristles having a cross-section that does not have a chirped long bristles from its lower end toward its upper end, which tapers from its lower end toward its upper end, the taper of the equal length bristles starting from such Above the upper end of the short bristles, characterized in that the length of the bristles exceeds the length of the short bristles, and the length of the upper end of the η a hans, which is 7 mm, is 4 m θ - each bristle bundle contains 2-12 from the bristles Long brush filaments extending from the surface. A toothbrush head of the invention, characterized in that it has W short brush filaments 9. and 2·12 long brush filaments extending from the surface of the bristle. :=Γ, which has a bristle surface, a plurality of bristles comprising a plurality of bristles extending from a bristle surface in the direction of a bristle, each bristle bundle = two bristles, the cross section of which is not tapered from its lower end toward its upper end: etc. IT The long bristles are tapered from their lower ends toward their upper ends, = the taper of the long bristles starts above the upper ends of the short bristles, and " I millilength: j: the length of the upper ends of the short bristles is 4 The smallest dimension of millimeters is in the range of gamma millimeters, and two: contains 2 () braided " Μ bristles of the bristles from the surface of the bristles. Stretching 2〇-30 new brush filaments and 2-U root long brush 131995.doc 200936077 1〇. A toothbrush head having a brushed surface, a plurality of bristle bundles comprising a plurality of bristles from the bristle surface along the bristles Extending in direction, the tuft of bristles is arranged in a pattern on the surface of the bristles, the dome comprising a plurality of tufts of opposing inner tufts having a plurality of tufts of bristles each having a tapered shape from a lower end thereof toward an upper end thereof Long bristles, and a pair of relatively outer tufts composed of a plurality of relatively short bristles. 11. The toothbrush head of claim H), characterized in that the tufts of bristles in the relatively inner tufts of tufts are all composed of a plurality of relatively long bristles which are tapered. 12. A toothbrush head according to claim low!, characterized in that the plurality of opposing outer tufts are arranged as an outer peripheral tuft along the two or more outer sides of the pattern of the tufts. 13. The toothbrush head of claim 12, wherein the plurality of opposing outer bristle bundles are configured to surround the entire side of the pair of opposing inner tufts as a peripheral tuft.牙刷 The toothbrush head of claim 1 (1) to 13 wherein the relatively long bristles and the relatively short bristles extend from the surface of the bristles to a length of 2-7, respectively. Millimeter. The toothbrush head of claim 14, wherein the length of the relatively long bristles and the relatively short brushes 4* respectively extending from the surface of the brush is 2-4 mm. 131995.doc 200936077 VII. Designation of representatives: (1) The representative representative of the case is: (1). (2) Brief description of the symbol of the representative figure: 10 Brush head 11 Surface 12 Bristle bundle 13 Short bristles 14 Long bristles 17 Neck region 18 Flexible link B Direction 8. If there is a chemical formula in this case, please reveal the best indication of invention Characteristic chemical formula: (none) ❹ 131995.doc