JP2006055180A - Toothbrush - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a toothbrush capable of acting the long bristle part on a distal end side sufficiently without unnecessarily vertically moving the long bristle part on the distal end side by the influence of the ruggedness of short bristle bundles excluding the distal end side at the time of brushing, and thereby facilitating the brushing even thou there are places on which the bristles hardly abut to reduce the ability of removing plaque at the time of brushing a relatively flat surface conventionally when using a toothbrush with the long bristles at a distal end part. <P>SOLUTION: In the toothbrush, all the bristle bundles on a rear end side are constituted of the mixed bristle bundles of the long bristles and short bristles at the time of viewing a head part 1 from the side face, lines connecting the bristle distal ends of the long bristles and the short bristles respectively are roughly parallel with a linear flocked surface on the rear end side, and the effective height 1A of the main bristles on the distal end side of the head part 1 is higher than the line 2B connecting the bristle distal ends of the short bristles on the rear end side by 1mm or more and is higher than the line connecting the bristle distal ends 2A of the long bristles. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a toothbrush with long bristles on the tip side that is easy to use and can efficiently remove plaque and the like.

  Basically, toothbrushes all have the same bristle length, and the line connecting the bristles of the hair bundle when the toothbrush head is viewed from the side is a straight line. Conventionally, in order to adapt the tip of the toothbrush to the complex shape of the dentition, for example, the length of the hair is changed to make the hair bundle conical, or when viewed from the side, the hair bundle is united into a mountain shape (for example, In addition, many toothbrushes with long bristles on the tip side of the head are also used (see, for example, Patent Documents 2 and 3). In any case, toothbrushes with conical bristles or ridges with several bristles as a unit often have a convex tip at the tip of the head, which is the back of the molar teeth. This is because it is important that the hair on the tip side of the head is long in order to polish the surface firmly.

  However, a toothbrush with long bristles on the tip side of the head has a problem in that when a relatively flat surface such as an anterior tooth is polished, a place where the bristles are difficult to touch is formed and the ability to remove plaque is reduced. In order to solve this problem, a toothbrush has been proposed in which the bristles gradually shorten as the grip portion is approached (see, for example, Patent Document 4). However, as a matter of course, with this toothbrush, the effect of long bristles on the tip side is reduced.

  Further, the head is tilted or deformed (for example, refer to Patent Documents 5 and 6), and hairs in the direction of the gripping portion are cut in units of hair bundles from the front end side of the head (for example, refer to Patent Document 7). There is also a toothbrush that lengthens the hair on the end side again as it goes to the rear end (see, for example, Patent Documents 8 and 9). However, these toothbrushes have only a long bristle portion on the tip side protruding, or the hair bundle of the portion excluding the tip side is a mountain shape, so that the bristles on the tip side and the rear end side during brushing The entire head will move up and down unnecessarily due to the mountain shape. As a result, there is a problem that the long hair portion on the tip side cannot sufficiently act and the effect of removing plaque is reduced. The fact that the entire head moves up and down unnecessarily due to the unevenness of the hair bundle is also a drawback that brushing is difficult.

Japanese Utility Model Publication No. 62-37478 FIG. Japanese Utility Model Publication No. 63-10930 JP-A-5-168528 Japanese Utility Model Publication No. 4-27829 JP 2000-287753 A Japanese Utility Model Publication No. 6-36425 JP 2002-355120 A JP-A-9-234114 JP 2002-325632 A

  Therefore, the present invention provides a toothbrush with long bristles on the tip side that can polish the back of the molar firmly, and places where it is difficult for the hair to touch when polishing a relatively flat surface as in the past, reducing the ability to remove plaque. The long hair part on the tip side is not affected by the long hair part on the tip side during brushing, or it is affected by the peak shape of the hair excluding the tip side and does not move up and down unnecessarily. It is an object of the present invention to provide a toothbrush that can sufficiently act and can be easily brushed.

  As a result of intensive studies to solve the above-described problems, the inventors of the present invention have a long toothbrush with long hair on the front end that can polish the back of the molars firmly, and all the hair bundles on the rear end side are composed of long hair and short hair. The present invention has been completed by finding that the mixed hair bundle can be provided with an action of appropriately absorbing the vertical movement of the back end side hair bundle.

  That is, the present invention relates to a toothbrush having a head portion in which a plurality of hair bundles configured by bundling a plurality of hairs are planted on a flocking surface, and a neck portion and a gripping portion following the head portion, when the head portion is viewed from the side. In addition, all of the hair bundles on the rear end side are composed of mixed hair bundles of long hairs and short hairs, and the line connecting the hair ends of the long hairs and short hairs is linear with respect to the flocked surface on the rear end side. It is substantially parallel, and the effective height of the main hair on the front end side of the head portion is at least 1 mm higher than the line connecting the short hair ends on the rear end side and is equal to or more than the line connecting the long hair ends. It is a toothbrush, and it is preferable that the difference in the height of the line connecting the hair ends of the long and short hairs on the rear end side is 1 to 5 mm.

  The present invention is a toothbrush having a long tip-side bristles that can polish the back of the molar teeth firmly, and the back-end side bristles are formed by mixing all the back-end side hair bundles with long hairs and short hairs. The bundle can be given an action of appropriately absorbing vertical movement. With this action, the toothbrush with a long tip at the tip side, or only the tip side bristles projecting or brushing the back end side of the toothbrush, etc. Thus, it is a toothbrush which can give the effect of the plaque removal more than before by the long hair part on the front end side acting reliably without the head part of the toothbrush moving up and down unnecessarily. And since it does not move up and down unnecessarily by being influenced by the mountain shape of the hair bundle on the rear end side, it is an excellent toothbrush that is easy to brush.

Hereinafter, the toothbrush according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is an explanatory view of a toothbrush according to an embodiment of the present invention as viewed from the side from the head portion to the neck portion. FIG. 2 is an explanatory view showing a line connecting the leading ends of long hairs and short hairs and an extension line of a flocked surface of a hair bundle planted on the rear end side in the toothbrush of FIG. 1. FIG. 3 is an explanatory view of the toothbrush of FIG. 1 viewed from the neck direction. FIG. 4 is an explanatory view of the toothbrush according to another embodiment of the present invention as viewed from the side from the head portion to the neck portion.

  In the drawings, reference numeral 1 denotes a head portion in which a plurality of hair bundles constituted by bundling a plurality of hairs are implanted on the flocked surface. The shape of the head portion of a conventional so-called general toothbrush can be used as it is as the head portion. Basically, the flocked surface 3 is rectangular when viewed from above in the case of FIG. Of course, this shape can be a head portion formed of an ellipse or a combination thereof. Moreover, when the head part 1 of the toothbrush which concerns on this invention is seen from a side surface, the height of the hair | bristle tip currently planted by the front end side 1a and the rear end side 1b differs. Here, the front end side 1a indicates the front side of the center portion of the head portion of the toothbrush when the head portion 1 is viewed from the side surface, and preferably 0.5 to 1 from the front end of the head portion when the head portion is viewed from the side surface. A site of about 5 cm is shown. The rear end side is a portion excluding the front end side of the head portion.

  The toothbrush which concerns on this invention is a toothbrush provided with the neck part following the above-mentioned head part 1, and also the holding part following a neck part. The neck part and the grip part can also be used without any particular restrictions on the shape used in conventional general toothbrushes (the grip part is omitted in the drawings).

  In the toothbrush according to the present invention, when the head portion 1 is viewed from the side, all of the hair bundles on the rear end side 1b are composed of mixed hair bundles of long hairs 2a and short hairs 2b. Because the hairs of different lengths are present irregularly (in practice, even if the long hairs and short hairs are regularly arranged, such as alternating) It is possible to moderate the movement of moving up and down unnecessarily by being influenced by the long hair portion on the front end side (expressed as irregular in comparison) or by the peak shape of the hair bundle on the rear end side.

  In the toothbrush according to the present invention, when the head portion 1 is viewed from the side, the lines 2A and 2B connecting the leading ends of the long hairs 2a and short hairs 2b on the rear end side 1b are linear on the rear end side 1b. It is necessary to be substantially parallel to the flocked surface 3B. Further, as shown in FIG. 3, the lines 2A and 2B connecting the hair tips are parallel to the straight flocked surface 3B on the rear end side 1b when the head portion is seen from the neck direction in FIG. This is also preferable with conventional toothbrushes with long bristles only on the front end side of the head, and toothbrushes such as the bristles on the rear end side becoming longer as they go to the chevron or rear end. The long hair part moves up and down unnecessarily due to the chevron shape of the hair bundle other than the tip side, and as a result, the long hair part on the tip side cannot work sufficiently, especially the back of the molar. This is to avoid the problem that the effect of removing plaque is reduced.

  It is preferable that the difference in height between lines 2A and 2B connecting the ends of the long and short hairs on the rear end side 1b is 1 to 5 mm. If it is less than 1 mm or more than 5 mm, the effect of relieving the movement of moving up and down unnecessarily is affected by the long hair portion on the front end side or the peak shape of the hair bundle on the rear end side. More preferably, it is 1-3 mm.

  In the toothbrush according to the present invention, when the head is viewed from the side, the effective height 1A of the main hair planted on the distal end side 1a of the head portion 1 connects the leading ends of the short hairs 2b on the rear end side 1b. It is important that it is 1 mm or more higher than 2B and the same or higher than the hair tip 2A of the long hair 2a. The effective height 1A is the height from the line 2B connecting the hair tips of the short hairs 2b of the hair bundle planted on the rear end side 1b to the tip of the hair planted on the tip side 1a of the head portion 1 in the vertical direction. That's it. Of course, this is to make use of the effect of the toothbrush in which the distal end side 1a of the head portion 1 which is excellent in the effect of removing plaque at the back of the molar, which is the origin of the present invention, is a long bristle. In addition, even when the flocked surface 3A on the front end side 1a as shown in FIG. 4 has an angle with respect to the flocked surface 3B having a linear shape on the rear end side 1b, the effective height 1A of the bristles on the front end side is It is the height in the vertical direction from the line 2B connecting the hair tips of the short hairs 2b on the rear end side 1b to the tips of the hairs planted on the tip side, and this is the hair bundle planted on the tip side 1a This is the same even if is planted at an angle with respect to the flocked surface 3A.

  If the effective height 1A of the main hair planted on the tip side 1a satisfies the above-mentioned conditions, the shape of the hair bundle on the tip side or the set of hair bundles is not limited, but preferably one convex shape A shape having a portion is preferable. For example, in the example shown in FIG. 3, the hair bundle planted on the distal end side 1a has a mountain shape when viewed from the neck direction of FIG.

Explanatory drawing which looked from the head part of one Example of the toothbrush which concerns on this invention to the neck part from the side surface. In the toothbrush of FIG. 1, the explanatory drawing which showed the extension line of the flocked surface of the hair | bristle bundle planted by the line | wire which connects each hair tip of long hair and short hair, and the rear end side. FIG. 3 is an explanatory view of the toothbrush of FIG. 1 viewed from the neck direction. FIG. 4 is an explanatory view of the toothbrush according to another embodiment of the present invention as viewed from the side from the head portion to the neck portion.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Head part 1a Tip side 1b Back end side 1A Effective height of the hair on the tip side 2 Hair 2a Long hair 2b Short hair 2A Line connecting long hair tips 2B Line connecting short hair tips 3 Hair transplantation surface 3A Tip hair implantation surface 3B Rear Flocked surface with straight end

Claims (2)

  In a toothbrush provided with a head portion (1) in which a plurality of hair bundles configured by bundling a plurality of hairs are planted on the flocked surface, and a neck portion and a gripping portion following the head portion (1), the head portion (1) is viewed from the side. Occasionally, all of the hair bundles on the rear end side (1b) are composed of mixed hair bundles of long hairs (2a) and short hairs (2b), and tie the tips of the long hairs (2a) and short hairs (2b). The line (2A, 2B) is substantially parallel to the straight flocked surface (3B) on the rear end side (1b), and the effective height of the main hair on the front end side (1a) of the head portion (1) The length (1A) is 1 mm or more higher than the line (2B) connecting the hair ends of the short hairs (2b) on the rear end side (1b) and is equal to or more than the line (2A) connecting the hair ends of the long hair (2a). Toothbrush. The toothbrush according to claim 1, wherein a difference in height between lines (2A, 2B) connecting the hair ends of the long hair (2a) and the short hair (2b) on the rear end side (1b) is 1 to 5 mm.

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