JP6472956B2 - toothbrush - Google Patents

Description

  The present invention relates to a toothbrush.

  Generally, the toothbrush is provided with the flocking table, the several hair | bristle bundle planted by the flocking table, and the handle | steering-wheel part connected to the flocking table so that patent document 1 may see. In such a toothbrush, a plurality of hair bundle rows having a plurality of hair bundles provided along the axial direction connecting the flocking table and the handle portion are arranged along the width direction orthogonal to the axial direction. For example, in Patent Document 1, four rows of the hair bundle rows are arranged along the width direction. The hair bundle is composed of a plurality of hair materials.

JP 2012-100806 A

  In the toothbrush as described in Patent Document 1, it is difficult to achieve both a large cleaning area and a back tooth cleaning property. Specifically, in the above toothbrush, since the width direction of the flocking table is set to be relatively small, it is easy to perform a cleaning operation (rear tooth cleaning operation) in a relatively small space in the oral cavity, while the width of the flocking table Since the area capable of cleaning the tooth surface with a small direction dimension is small, it takes a lot of time to clean the tooth surface. Therefore, in order to ensure a large cleaning area, the width direction dimension of the flocking table is set to be large, and the number of rows of hair bundles arranged along the width direction on the flocking table is increased, that is, a so-called wide type. However, when this wide type is used, the operability in the oral cavity is reduced due to the larger dimension in the width direction of the flocking table, and thus it is particularly difficult to clean the back teeth.

  The objective of this invention is providing the toothbrush which can also ensure the cleaning property of a back tooth, ensuring a large cleaning area.

As means for solving the above-mentioned problems, the present invention provides a flocking table, a bristle group planted on the flocking table and having a plurality of bristle materials, and connected to the flocking table and gripped by a person. A toothbrush comprising a handle portion, wherein the flocking table is located at the center in the width direction orthogonal to the axial direction connecting the flocking table and the handle portion, and the center portion in the width direction. And a second outer portion located on the other side of the central portion in the width direction, and the hair material group is a plurality of planted in the central portion. A central hair material group having a plurality of hair materials, a first outer hair material group having a plurality of hair materials planted on the first outer portion, and a plurality of hair materials planted on the second outer portion. A second outer bristle group having the outermost bristle group in the width direction of the first outer bristle group The dimension between the hair material planted on the outermost side and the hair material planted on the outermost side in the width direction among the second outer hair material group is the central hair material group and the first outer hair material group. And the average length of all the hair materials included in the second outer hair material group is set, and the center hair material group is the shaft of the center portion in the axial direction of the center portion. A plurality of bristle materials planted in a distal end side region having a size of one third from the central distal end opposite to the end on the handle portion side toward the handle portion with respect to the entire dimension in the direction A distal-side bristle group having a plurality of bristle materials planted in a proximal-side region other than the distal-side region in the central portion, and the distal-side bristle Average hair length of all hair materials included in the material group is average hair length of all hair materials included in the proximal-side hair material group A top, both the first outer hair material group and the second outer bristles group has a smaller hardness than the proximal side bristles group, to provide a toothbrush.

  In the present invention, the dimension between the hair material planted on the outermost side in the width direction among the first outer hair material group and the hair material planted on the outermost side in the width direction among the second outer hair material group. However, the hair length of all the hair materials contained in the central hair material group, the first outer hair material group, and the second outer hair material group (perpendicular to both the axial direction and the width direction from the flocking table) Since it is set to be larger than the average of the amount of protrusion in the height direction), that is, it is configured as a so-called wide type, it can efficiently clean a wide area of teeth, and further, within the narrow oral cavity of the flocking table The average hair length of all the hair materials contained in the distal-side hair material group planted in the distal-side region, which is an area that is relatively easy to operate even in the space, of all the hair materials contained in the proximal-side hair material group Since it is above average hair length, it is so-called wide type, so it can be operated in the oral cavity. Back teeth can be effectively cleaned by utilizing the bristles with a large bristle height of limited which is easily despite the distal-side bristle groups. In addition, since the hardness of each outer hair material group is smaller than that of the proximal hair material group (each outer hair material group is softer than the proximal hair material group), A massage effect is also obtained.

  The “hardness” is represented by the magnitude of the buckling load of each bristle material group.

  In this case, the average length of all the hair materials included in the first outer hair material group and the average hair length of all the hair materials included in the second outer hair material group are both the base ends. It is preferable that the hair length of all the hair materials included in the side hair material group is larger than the average.

  If it does in this way, effective cleaning of a tooth surface and effective massage of a gum can be made compatible. Specifically, since the average bristle length included in each outer bristle group is greater than the average bristle length contained in the proximal bristle group, either one of the outer bristle materials when cleaning the tooth surface The group can easily touch the gums, which effectively massages the gums. Further, if the average length of a plurality of bristle materials included in each outer bristle group is larger than the average bristle length contained in the base side bristle material group with a conventional toothbrush, the teeth of the proximal side bristle material group Although contact with the surface is limited or it becomes difficult to rotate the toothbrush around the axis, in the present invention, the hardness of each outer hair material group is smaller than that of the proximal hair material group. The base-side hair material group having a hardness greater than that of the outer hair material group is surely brought into contact with the tooth surface by bending each hair material included in the outer hair material group during cleaning of the tooth surface. The tooth surface can be effectively cleaned by the proximal-side bristle material group, and the toothbrush can be easily rotated around the axis.

  Furthermore, in this case, the first outer bristle group and the second outer bristle group each have an average bristle length greater than the average bristle length of the plural bristle materials included in the proximal end side bristle group. Low length including a plurality of bristle materials having an average bristle length smaller than an average bristle length of plural bristle materials included in the proximal end side bristle material group It is preferable to have a hair material group.

  If it does in this way, the cleaning effect of a tooth surface and the massage effect of a gum can further be heightened. Specifically, each outer hair material group has a high hair material group and a low hair material group, so that the hair length of all hair materials contained in each outer hair material group is uniformly the proximal hair material. Compared to the case where the hair length is larger than the average of the hair lengths of the plurality of hair materials included in the group, the density of the high hair material group decreases and the hardness of the high hair material group decreases, while the hair material group of low hair length Hardness increases. Therefore, when the high hair material group comes into contact with the gums, the stimulation that the high hair material group gives to the gums is reduced, so that the gums can be massaged effectively, and the relatively high hardness The tooth surface can be effectively polished by the low-length bristle material group. In addition, since the hardness of the high bristle material group becomes small, the high bristle material group is easily bent when the toothbrush is rotated around the axis, so that cleaning by the rotating operation is facilitated. .

  In the present invention, each of the diameters of the hair materials included in the first outer hair material group and the diameters of the hair materials included in the second outer hair material group are included in the central hair material group. It is preferably smaller than the diameter of the hair material.

  Even if it does in this way, the cleaning effect of a tooth surface and the massage effect of a gum can be heightened. Specifically, since the diameter of each bristle material included in each outer bristle material group is smaller than the diameter of each bristle material contained in the central bristle material group, the hardness of the outer bristle material group becomes the proximal hair material group Because it becomes smaller than that, the stimulation when the outer hair group contacts the gum is softened, the massage effect is enhanced, and each hair material contained in the outer hair group is easily bent when cleaning the tooth surface, The proximal-side bristle material group reliably contacts the tooth surface.

  Moreover, in this invention, it is preferable that the said front end side hair material group has the highest length hair material which has the largest hair length in the hair material contained in the said front end side hair material group.

  If it does in this way, it will also become possible to perform cleaning between teeth effectively with the toothbrush concerned. Specifically, the interdental space can be effectively cleaned by the maximum length hair material.

  In the present invention, the highest-length bristle material is planted in the axially intermediate portion of the tip-side region, and the tip-side bristle material group extends from the highest-length bristle material in the axial direction. It is preferable to have a plurality of bristle materials planted so that the bristle length gradually decreases toward the outside.

  If it does in this way, when inserting the toothbrush toward the back teeth, it becomes easy to insert, and it becomes possible to effectively perform cleaning between teeth. Specifically, the front-side bristle material group has a plurality of bristle materials planted so that the bristle length gradually decreases from the highest-length bristle material toward the outside in the axial direction. Thus, when the toothbrush is inserted toward the back teeth, each bristle material is guided along the tooth surface, and between the teeth can be effectively cleaned by the maximum length bristle material.

  In the present invention, the total number of hair materials included in the first outer hair material group and the total number of hair materials included in the second outer hair material group are both hairs included in the central hair material group. It is preferable that there are more than the total number of materials.

  If it does in this way, effective cleaning between teeth and effective massage of a gum can be made compatible. Specifically, since the total number of bristle materials included in each outer bristle material group is relatively large, the area where these outer bristle material groups contact the gums increases, which not only softens the stimulation to the gums. The gums are effectively massaged, and the total number of hair materials contained in the central hair material group is relatively reduced, so that the insertion property between the teeth of the central hair material group, that is, the cleaning property between the teeth is improved. . In addition, in the case of a conventional toothbrush, when the total number of bristle materials included in each outer bristle material group increases, each outer bristle group is less likely to bend, so contact with the tooth surface of the proximal bristle material group However, in the present invention, the hardness of each outer bristle material group is set smaller than that of the proximal bristle material group. Therefore, the base end side bristle material group sufficiently contacts the tooth surface, and the toothbrush can be easily rotated around the axis.

  Moreover, in this invention, the said front end side hair material group is located in the said center front end part side most among the 1st outer side front end parts located in the same side as the said center front end part about the said axial direction in a said 1st outer side part. A part located closest to the central tip part among second outer tip parts located on the same side as the central tip part in the axial direction of the second outer part, located closer to the central tip part than the part. It is preferable to have a protruding bristle material group having a plurality of bristle materials planted in the projecting region located on the central tip side.

  In this way, the back teeth can be more effectively cleaned. Specifically, the protruding bristle group has a relatively large bristle length among the bristle materials included in the central bristle group, and projects to the center tip part side from each outer bristle group, The back teeth can be more effectively cleaned. More specifically, since there is no outer bristle group on both sides in the width direction of the protruding bristle group, the toothbrush in particular, although the operation in the oral cavity is likely to be limited due to the so-called wide type. The back teeth can be effectively cleaned by the protruding bristle material group when it is rotated around the axis.

  In this case, the flocking table is the outermost part of the first outer front end portion of the flocking table in the width direction and the most outer part of the second outer front end portion. It is preferable to have a shape in which the dimension in the width direction gradually decreases from the outer part of the part located on the center tip part side toward the center tip part.

  In this way, the operability of the distal side region that is relatively easy to operate even in a narrow intraoral space of the flocking table is further enhanced, so that the back teeth can be further cleaned.

  As described above, according to the present invention, it is possible to provide a toothbrush that can ensure the cleanability of the back teeth while ensuring a large cleaning area.

It is a perspective view of the toothbrush of one Embodiment of this invention. It is the figure which looked at the toothbrush shown in FIG. 1 from the front end side. It is sectional drawing in the III-III line | wire shown in FIG. It is a top view of a flocking table.

  A toothbrush according to an embodiment of the present invention will be described with reference to FIGS.

  As shown in FIG. 1, the toothbrush of the present embodiment is connected to the hair transplant table 10, the hair material group 50 that is planted on the hair transplant table 10 and has a plurality of hair materials, and is connected to the hair transplant table 10. And a handle portion 90 gripped by the In this embodiment, the bristle material is formed of PBT resin (polybutylene terephthalate resin).

  As shown in FIG. 4, the flocking table 10 is a table for planting the bristle material group 50, and the axial dimension connecting the flocking table 10 and the handle portion 90 is a width orthogonal to the axial direction. It has a shape larger than the dimension in the direction (left-right direction in FIG. 4). The flocking table 10 includes a central portion 20 located in the center in the width direction, a first outer portion 30 located on one side (right side in FIG. 4) of the central portion 20 in the width direction, and a central portion in the width direction. 20 and a second outer portion 40 located on the other side (left side in FIG. 4). In this embodiment, the flocking table 10 has a shape that is symmetrical in the width direction with respect to an axis of symmetry that passes through the center in the width direction and is parallel to the axial direction. For this reason, the description of the second outer portion 40 is omitted.

The center part 20 has a shape that extends long in the axial direction at the center in the width direction of the flocking table 10. A plurality (20 in this embodiment) of central hair bundle holes 20a are formed in the central portion 20. A hair bundle made of a plurality of hair materials is implanted in each central hair bundle hole 20a. In the present embodiment, the central hair bundle hole 20a is circular, and the diameter φ1 at the opening surface is set to 1.400 mm (the cross-sectional area is 1.539 mm ² ).

The first outer portion 30 has a shape that extends long in the axial direction on one side in the width direction of the flocking table 10. The first outer portion 30 is formed with an outer bristle hole group 34 having a plurality (ten in this embodiment) of outer bristle holes 30a. In each outer hair bundle hole 30a, a hair bundle made of a plurality of hair materials is implanted. The diameter φ2 at the opening surface of the outer hair bundle hole 30a is set larger than the diameter φ1 at the opening surface of the central hair bundle hole 20a. In the present embodiment, the diameter φ2 at the opening surface of the outer hair bundle hole 30a is set to 2.200 mm (the cross-sectional area is 3.801 mm ² ).

  The first outer bristle hole group 34 includes an inner bristle hole group 35 having a plurality of outer bristle holes 30a provided so as to be arranged along the axial direction inside the width direction, and the inner bristle hole. An outermost bristle hole group 36 having a plurality of outer bristle holes 30a provided so as to be arranged along the axial direction outside the group 35 in the width direction. Specifically, the inner hair bundle hole group 35 includes six outer hair bundle holes 30a arranged in the axial direction, and the outermost hair bundle hole group 36 includes four outer hair bundles arranged in the axial direction. It has a hole 30a. The outer hair bundle hole 30a provided on the distal end side opposite to the handle portion 90 side in the axial direction in the inner hair bundle group 35 is the handle portion 90 side in the axial direction in the outermost hair bundle group 36. It is located in the said front end side rather than the outer hair | bristle bundle hole 30a provided in the front end side on the opposite side. Among the plurality of central hair bundle holes 20a, the central hair bundle hole 20a provided on the central front end portion 21 side opposite to the handle portion 90 side in the axial direction is provided on the front end side of the inner hair bundle hole group 35. It is located closer to the central tip 21 than the outer hair bundle hole 30a.

  As shown in FIG. 4, the flocking table 10 includes the outermost hair bundle hole group 36 in the width direction of the outer hair bundle hole 30a provided on the distal end side opposite to the handle portion 90 side in the axial direction. It has the shape which approaches the inner side (center part 20) about the said width direction as it goes to the center front-end | tip part 21 side about the said axial direction from an outer site | part.

  The bristle material group 50 is planted in the central bristle material group 60 having a plurality of bristle materials planted in each central bristle hole 20a of the central part 20 and in each outer bristle hole 30a of the first outer part 30. A first outer hair material group 70 having a plurality of hair materials, and a second outer hair material group 80 having a plurality of hair materials planted in each outer hair bundle hole 40a of the second outer portion 40. . The first outer bristle material group 70 and the second outer bristle material group 80 have a symmetrical shape in the width direction with respect to the symmetry axis. For this reason, description of the 2nd outer side bristle material group 80 is abbreviate | omitted.

  In this embodiment, the bristle material planted on the outermost side in the width direction among the first outer bristle material group 70 and the bristle material planted on the outermost side in the width direction among the second outer bristle material group 80. The width dimension W (see FIG. 2) between the hair lengths of all the hair materials included in the central hair material group 60, the first outer hair material group 70, and the second outer hair material group 80 (the flocking table 10). Is set to be larger than the average (hereinafter referred to as “total average hair length”) of the amount of protrusion in the height direction perpendicular to both the axial direction and the width direction. That is, the toothbrush of this embodiment is configured as a so-called wide type. Here, the width dimension W is preferably set to 12.00 mm or more. In the present embodiment, the width dimension W is set to 13.00 mm, and the total average bristle length is set between 9.440 mm and 9.470 mm.

  The central bristle material group 60 is implanted in the distal end side bristle material group 62 having a plurality of bristle materials implanted in the distal end side region 22 in the central part 20 and the proximal end side region 24 in the central part 20. And a proximal end hair material group 64 having a plurality of hair materials. The distal end side region 22 has a dimension that is one third of the axial dimension L of the central portion 20 from the central distal end portion 21 toward the handle portion 90 in the axial direction of the central portion 20. It is an area. The proximal end region 24 is a region other than the distal end region 22 in the central portion 20. The dimension L in the axial direction of the central part 20 means a dimension between the central tip part 21 and the boundary between the central part 20 and the handle part 90. The boundary between the central portion 20 and the handle portion 90 is from the central hair bundle hole 20a disposed closest to the handle portion 90 among the plurality of central hair bundle holes 20a to the most central tip portion of the plurality of central hair bundle holes 20a. This is a part located on the handle part 90 side by the same dimension as the dimension between the central bristle hole 20a arranged on the 21 side and the central tip part 21.

  The average of the bristle lengths of all the bristle materials included in the distal end side bristle material group 62 is set to be higher than the average of the bristle lengths of all the bristle materials included in the proximal end side bristle material group 64. Specifically, all the hair materials included in the proximal-end-side hair material group 64 have the same hair length H1 (see FIG. 3). In FIG. 3, the plurality of bristle materials and the outermost bristle hole group 36 planted in the central bristle hole 20 a located at the center in the width direction among the plural central bristle holes 20 a are brought into contact with each other. The illustration of a plurality of bristle materials is omitted. In the present embodiment, the hair height H1 is set to 9.000 mm. The distal-side bristle material group 62 is planted in the middle of the axial direction in the distal-side region 22 and has the maximum bristle length H2 among the bristle materials included in the distal-side bristle material group 62. It has a hair material 63, and has a plurality of hair materials planted so that the hair length gradually decreases from the maximum length hair material 63 toward the outside in the axial direction. In this embodiment, the hair length H2 is set to 11.00 mm. The hair lengths of all the hair materials included in the distal-end-side hair material group 62 are set to be equal to or higher than the hair lengths H1 of the hair materials included in the proximal-side hair material group 64. Of the distal-side hair material group 62, the hair length of the hair material planted closest to the central distal end portion 21 in the axial direction is the same as the hair height H1 of each hair material included in the proximal-side hair material group 64. Is set.

  As shown in FIG. 1 and FIG. 3, the distal-side bristle material group 62 has a protruding region 23 that projects toward the central distal end 21 side of the distal-side region 22 relative to the distal ends of the outer bristle material groups 70 and 80. A protruding hair material group 66 having a plurality of hair materials implanted is provided. As shown in FIG. 4, the protruding region 23 is the most central tip portion 21 of the first outer tip portion 32 (the portion of the first outer portion 30 located on the same side as the center tip portion 21 in the axial direction). It protrudes to the central tip 21 side of the tip side region 22 from the hair material planted on the side, and the second outer tip 42 (the same side as the central tip 21 in the axial direction of the second outer portion 40) Is a region that protrudes closer to the central tip portion 21 side of the tip side region 22 than the bristle material planted on the most central tip portion 21 side. The highest bristle material 63 is included in the protruding bristle material group 66.

  The first outer bristle material group 70 has a smaller hardness than the proximal end bristle material group 64. Here, “hardness” is represented by the magnitude of the buckling load of each bristle material group. The average of the bristle lengths of all the bristle materials included in the first outer bristle material group 70 is set to be larger than the average of the bristle lengths H1 of all the bristle materials included in the proximal end side bristle material group 64. The first outer hair material group 70 includes a high hair material group 72 including a plurality of hair materials having a hair length H4 larger than the hair length H1 of the plurality of hair materials included in the proximal end side hair material group 64, and a base And a low-length hair material group 74 including a plurality of hair materials having a hair length H3 smaller than the hair height H1 of the plurality of hair materials included in the end-side hair material group 64. Specifically, the number of hair materials included in the high-length hair material group 72 is the same as the number of hair materials included in the low-length hair material group 74, and each hair included in the high-length hair material group 72 The average of the hair length H4 of the hairs and the hair length H3 of each hair material included in the low hair material group 74 is set to be larger than the hair length H1 of each hair material included in the proximal end hair material group 64. . In the present embodiment, the hair length H4 of the hair material included in the high hair material group 72 is set to 11.00 mm, and the hair height H3 of the hair material contained in the low hair material group 74 is 8. 000 mm. That is, the average of the hair lengths of all the hair materials included in the first outer hair material group 70 is larger than the hair height H1 (9.0000 mm) of each hair material included in the proximal end hair material group 64. It is set to 500 mm.

The diameter of each hair material included in the first outer hair material group 70 is set smaller than the diameter of each hair material included in the central hair material group 60. In the present embodiment, the diameter of each hair material included in the first outer hair material group 70 is set to 0.127 mm (the cross-sectional area is 0.013 mm ² ), and each hair material included in the central hair material group 60 is The diameter is set to 0.152 mm (the cross-sectional area is 0.018 mm ² ). Each bristle material included in the low bristle material group 74 has a uniform diameter over the entire region in the longitudinal direction. The diameter of each bristle material included in the high-length bristle material group 72 is set so as to gradually decrease from the flocking table 10 toward the tip of the bristle material. The cross-section of each bristle material is not limited to a circle as long as the cross-sectional area of the bristle material is the same. The diameter is a value when it is assumed that the cross-section of each bristle material is circular.

The total number of hair materials included in the first outer hair material group 70 is set to be greater than the total number of hair materials included in the central hair material group 60. In the present embodiment, the number of hair materials included in the first outer hair material group 70 is set to 2020, and the number of hair materials included in the central hair material group 60 is set to 960. . That is, 202 hair materials are implanted in each outer hair bundle hole 30a, and 48 hair materials are implanted in each central hair bundle hole 20a. Therefore, the cross-sectional area of the plurality of bristles planted on the single central Motabaana 20a is, 0.864Mm ^2, and the interruption of a single outer Motabaana 30a a plurality of bristles planted in The area is 2.626 mm ² . Further, the filling rate of the hair material into the central hair bundle hole 20a is 56.14%, and the filling rate of the hair material into the outer hair bundle hole 30a is 69.09%.

  In the toothbrush of the present embodiment described above, the bristle material planted on the outermost side in the width direction among the first outer bristle material group 70 and the outermost plant on the width direction among the second outer bristle material group 80. Since the width dimension W between the hair materials made is set to be larger than the total average hair length (average hair length of all hair materials included in each hair material group 60 to 80), that is, so-called Since it is configured as a wide type, it is possible to efficiently clean a wide area of teeth, and further, the tip implanted in the tip side region 22 which is a region that is relatively easy to operate even in a narrow intraoral space of the flocking table 10 Since the average hair length of all the hair materials included in the side hair material group 62 is equal to or higher than the average hair length H1 of all the hair materials included in the proximal-side hair material group, Hair on the tip side despite being easily restricted The posterior teeth using the bristles having 62 large bristle length of can be effectively cleaned. In addition, since the hardness of each outer bristle material group 70,80 is smaller than that of the proximal end side bristle material group 64 (each outer bristle material group 70,80 is softer than the proximal end side bristle material group 64), The gum effect by the outer bristle material groups 70 and 80 is also obtained.

  In the present embodiment, the average of the hair lengths of all the hair materials included in the first outer hair material group 70 and the average hair length of all the hair materials included in the second outer hair material group 80 are both It is set larger than the average of the hair lengths H1 of all the hair materials included in the proximal end side hair material group 64. For this reason, it is possible to achieve both effective cleaning of the tooth surface and effective massage of the gums. Specifically, since the average bristle length included in each of the outer bristle material groups 70 and 80 is larger than the average bristle length contained in the proximal-end bristle material group 64, either one of them when cleaning the tooth surface. The outer hair material group of the outer hair material is easily brought into contact with the gums, so that the gums are effectively massaged, and the hardness of each of the outer hair material groups 70 and 80 is smaller than that of the proximal hair material group 64. Thus, when the tooth surfaces are cleaned, the bristle materials included in the outer bristle material groups 70 and 80 are bent, so that the proximal bristle material group 64 having a hardness greater than that of the outer bristle material groups 70 and 80 is ensured. Since it contacts the tooth surface, the tooth surface can be effectively cleaned by the proximal-side bristle material group 64. Moreover, in this embodiment, since the hardness of each outer bristle material group 70,80 is smaller than that of the base end side bristle material group 64, the hair of the bristle material contained in each outer bristle material group 70,80. Although the average length is larger than the average bristle length included in the proximal-side bristle material group 64, the toothbrush can be easily rotated around the axis.

  Furthermore, in this embodiment, the diameter of each hair material included in the first outer hair material group 70 and the diameter of each hair material included in the second outer hair material group 80 are both included in the central hair material group 60. Since it is set smaller than the diameter of each hair material, the cleaning effect of the tooth surface and the massage effect of the gums are further enhanced. Specifically, the hardness of the outer bristle material group 70, 80 by the diameter of each bristle material contained in each outer bristle material group 70, 80 being smaller than the diameter of each bristle material contained in the central bristle material group 60. Is smaller than that of the proximal-side bristle material group 64, so that the stimulation when the outer bristle material groups 70 and 80 come into contact with the gums is softened, and the massage effect is enhanced. Since the bristle materials included in the groups 70 and 80 are easily bent, the proximal-side bristle material group 64 reliably contacts the tooth surface.

  Moreover, in this embodiment, the front end side hair material group 62 has the maximum length hair material 63, and is planted so that the hair length gradually decreases from the maximum length hair material 63 toward the outside in the axial direction. Having a plurality of hair materials. For this reason, when inserting the toothbrush toward the back teeth, it is easy to insert the toothbrush and it is possible to effectively clean the teeth. Specifically, the front-end-side hair material group 62 has a plurality of hair materials planted so that the hair length gradually decreases from the highest-length hair material 63 toward the outer side in the axial direction. Each bristle material is guided along the tooth surface when the toothbrush is inserted toward the back tooth with the central tip 21 of the head as the head, and the interdental teeth are effectively cleaned by the maximum length bristle material 63. Can do.

  In the present embodiment, the total number of hair materials included in the first outer hair material group 70 and the total number of hair materials included in the second outer hair material group 80 are both included in the central hair material group 60. Since it is set more than the total number of hair materials, it is possible to achieve both effective cleaning between teeth and effective massage of gums. Specifically, since the total number of bristle materials included in each outer bristle material group 70, 80 is relatively large, the area where these outer bristle material groups 70, 80 are in contact with the gums is increased, thereby increasing the Not only is the stimulation soft, but the gums are effectively massaged, and the total number of hair materials contained in the central hair material group 60 is relatively reduced, so that the insertion of the central hair material group 60 between the teeth is possible. That is, the cleaning property between the teeth is enhanced. Moreover, in this embodiment, since the hardness of each outer bristle material group 70,80 is set smaller than that of the base end side bristle material group 64, the bristle material contained in each outer bristle material group 70,80. Even if the total number of hairs is set to be larger than the total number of hair materials included in the central hair material group 60, the proximal end hair material group 64 is sufficiently in contact with the tooth surface and the toothbrush can be easily rotated around the axis. Can be made.

  Moreover, in this embodiment, the front end side hair material group 62 protrudes in the center front-end | tip part 21 side rather than the hair material planted in the site | part located in the most center front-end | tip part 21 side among the 1st outer side front-end | tip parts 32, And since it has the protruding hair material group 66 which protrudes in the center front-end | tip part 21 side rather than the bristle material planted in the site | part located in the most center front-end | tip part 21 side among the 2nd outer side front-end | tip parts 42, it is more effective. The back teeth can be cleaned. Specifically, the protruding bristle material group 66 has a relatively large bristle length among the bristle materials included in the central bristle material group 60 and is closer to the central tip 21 than the outer bristle material groups 70 and 80. Therefore, the back teeth can be more effectively cleaned. More specifically, since the outer bristle groups 70 and 80 do not exist on both sides in the width direction of the protruding bristle material group 66, particularly when the toothbrush is rotated around the axis, the projecting bristle material group 66 The back teeth can be effectively cleaned.

  Further, the flocking table 10 includes the outermost part of the first outer tip 32 and the outermost part of the second outer tip 42 in the width direction of the flocking table 10 and the center of the second outer tip 42. Since the dimension in the width direction gradually decreases from the outer part located on the tip part 21 side toward the center tip part 21, the narrower intraoral space of the flocking table 10 is relatively The operability of the tip side region 22 that is easy to operate is further enhanced. Therefore, the cleaning ability of the back teeth is further improved.

  In addition, it should be thought that the said embodiment disclosed this time is an illustration and restrictive at no points. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the above-described embodiment, the distal-side bristle material group 62 includes a plurality of bristle materials planted so that the bristle length gradually decreases from the highest-length bristle material 63 toward the outside in the axial direction. Although shown, the bristle length of these hair materials is not limited to this. For example, all the hair materials included in the distal-end-side hair material group 62 may be set to the same hair length H <b> 2 as the maximum hair material 63.

  In the above embodiment, the highest bristle material 63 is planted in the middle in the axial direction. However, the highest bristle material 63 is planted on the most central tip side, and the handle in the axial direction from the highest bristle material 63. It may be planted so that the bristle length gradually becomes smaller toward the part 90 side, and this structure also makes it possible to effectively clean the teeth.

  Moreover, in the said embodiment, the average of the hair length of all the hair materials contained in the 1st outer side hair material group 70 and the 2nd outer side hair material group 80 is all the hair materials contained in the base end side hair material group 64. Although the example set larger than the average of the hair length H1 was shown, the average of the hair length of all the hair materials included in the first outer hair material group 70 and the second outer hair material group 80 is the base end. You may set below the average of the hair length H1 of all the hair materials contained in the side hair material group 64. FIG.

  Alternatively, the hair lengths of all the hair materials included in the first outer hair material group 70 and the second outer hair material group 80 are uniformly equal to the hair height H1 of all the hair materials included in the proximal end side hair material group 64. It may be set larger than the average. However, all the hair materials included in each outer hair material group 70 and 80 by having each outer hair material group 70 and 80 have a high hair material group and a low hair material group like the said embodiment. Compared with the case where the hair length is uniformly larger than the average of the hair lengths of the plurality of hair materials included in the proximal-end-side hair material group 64, the density of the high hair material group is reduced and the high hair material group While the hardness decreases, the hardness of the low-length hair material group increases. That is, when each outer bristle material group 70, 80 has a high bristle material group and a low bristle material group, the hardness (magnitude of buckling load) of the outer bristle material group 70, 80 is high. Since it corresponds to that of the hair material group, the hair length of all the hair materials included in each of the outer hair material groups 70 and 80 is uniformly larger than the average of the hair lengths of the plurality of hair materials included in the proximal end side hair material group 64. The outer bristle material group 70, 80 is less hard than the case of larger. Therefore, when the high hair material group comes into contact with the gums, the stimulation given to the gums by the high hair material group is reduced, and the gums can be effectively massaged, and the relatively high hardness is obtained. The tooth surface can be effectively polished by the low-length bristle material group. In addition, since the hardness of the high bristle material group becomes small, the high bristle material group is easily bent when the toothbrush is rotated around the axis, so that cleaning by the rotating operation is facilitated. .

Moreover, the hardness of the base end side hair material group 64 may be changed as appropriate. For example, by placing 28 hair materials having a diameter of 0.203 mm (cross-sectional area of 0.032 mm ² ) in the central hair bundle hole 20a, the proximal side hair having a greater hardness than the above embodiment. A material group 64 is obtained. In this case, the cross-sectional area of the plurality of bristles planted on the single central Motabaana 20a is 0.896Mm ^2, and the packing ratio of the bristles to the central Motabaana 20a is 58.22% It becomes.

DESCRIPTION OF SYMBOLS 10 Flocking table 20 Central part 22 Front end side area 21 Central front end part 24 Base end side area 30 1st outer side part 32 1st outer side front end part 40 2nd outer side part 42 2nd outer side front end part 50 Hair material group 60 Central hair material group 62 Front hair group 63 Highest hair material 64 Base hair material group 66 Protruding hair material group 70 First outer hair material group 72 High hair material group 74 Low hair material group 80 Second outer hair material group

Claims (9)

A toothbrush comprising a flocking table, a bristle group planted on the flocking table and having a plurality of bristle materials, and a handle portion connected to the flocking table and gripped by a person,
The flocking table has a central part located at the center in the width direction orthogonal to the axial direction connecting the flocking table and the handle part, and a first outer part located on one side of the central part in the width direction, A second outer portion located on the other side of the central portion in the width direction,
The bristle material group includes a central bristle material group having a plurality of bristle materials planted in the central portion, and a first outer bristle material group having a plurality of bristle materials planted in the first outer portion, A second outer bristle group having a plurality of bristle materials planted on the second outer part,
The dimension between the hair material planted on the outermost side in the width direction in the first outer hair material group and the hair material planted on the outermost side in the width direction in the second outer hair material group. Is set larger than the average of the hair lengths of all the hair materials contained in the central hair material group, the first outer hair material group and the second outer hair material group,
The central bristle material group is formed from the central front end portion on the opposite side to the end portion on the handle portion side to the handle portion with respect to the entire axial dimension of the central portion in the axial direction of the central portion. A distal-side bristle material group having a plurality of bristle materials planted in a distal-side region having a size of one third toward the front, and a proximal-side region other than the distal-side region in the central portion. A base-end-side hair material group having a plurality of hair materials, and an average of the lengths of all the hair materials included in the front-end-side hair material group is all the hairs included in the base-end side hair material group More than the average hair length of the material,
The first outer bristle group and the second outer bristle group are both toothbrushes having a smaller hardness than the proximal-end bristle group. The toothbrush according to claim 1,
The average of the bristle lengths of all the bristle materials included in the first outer bristle material group and the average bristle length of all the bristle materials contained in the second outer bristle material group are both the base end side bristle material group. Toothbrush, larger than the average bristle length of all bristle materials included in the. The toothbrush according to claim 2,
Each of the first outer bristle material group and the second outer bristle material group has a plurality of bristle materials having an average bristle length greater than the average bristle length of the plural bristle materials included in the proximal end side bristle material group A group of high hair materials, and a group of low hair materials including a plurality of hair materials having an average of hair lengths smaller than the average hair length of the plurality of hair materials contained in the base end side hair material group, Having a toothbrush. The toothbrush according to any one of claims 1 to 3,
The diameters of the hair materials included in the first outer hair material group and the diameters of the hair materials included in the second outer hair material group are both larger than the diameters of the hair materials included in the central hair material group. A small toothbrush. The toothbrush according to any one of claims 1 to 4,
The said front end bristle material group is a toothbrush which has the highest length bristle material which has the largest bristle length among the bristle materials contained in the said front end side bristle material group. The toothbrush according to claim 5,
The highest bristle material is planted in the middle in the axial direction in the tip side region,
The tip-side bristle material group is a toothbrush having a plurality of bristle materials planted such that the bristle length gradually decreases from the highest-length bristle material toward the outside in the axial direction. The toothbrush according to any one of claims 1 to 6,
The total number of hair materials included in the first outer hair material group and the total number of hair materials included in the second outer hair material group are both greater than the total number of hair materials included in the central hair material group. Many toothbrushes. The toothbrush according to any one of claims 1 to 7,
The front-end-side bristle material group is located at the center front end of the first outer front end portion that is located on the same side as the central front end portion in the axial direction of the first outer portion than the portion that is located closest to the center front end portion. The central front end portion is located on the side closer to the central front end portion among the second outer front end portions located on the same side as the central front end portion in the axial direction of the second outer portion. A toothbrush having a protruding bristle group having a plurality of bristle materials planted in a projecting region located on the side. The toothbrush according to claim 8,
The flocking table is the outermost part of the first outer front end portion of the flocking table in the width direction, the outermost part of the part located on the central front end part side, and the central outermost part of the second outer front end part. The toothbrush which has a shape where the dimension of the said width direction becomes small gradually as it goes to the said center front-end | tip part from the site | part outside the site | part located in the side.