JP2001211940A - Method for manufacturing brush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and inexpensively provide a brush focked with bristle bundles perpendicular or oblique to the specific surfaces of the nested spaces of a brush body. SOLUTION: This method consists of a first stage of obtaining a focked piece (2) by focking the bristle bundles (4) to a supporting body (3) independent from the brush body (1) and a second stage of mounting this focking piece (2) to the brush body (1).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a brush, in which a flock with a bristle bundle planted on a support is attached to a brush body, and more particularly to a method for manufacturing a toothbrush in this manner.

[0002]

2. Description of the Related Art A conventional brush manufacturing method, as shown in, for example, JP-A-9-103324, forms a hole in a head portion of a brush body when forming the brush body by injection molding. A method of mechanically or thermally fixing a hair bundle in the hole and implanting the hair has been adopted. A hair transplanter is usually used for the flocking, and the flocking operation section of the flocking machine is disposed so as to cover the open flat head surface, and the hair flocking operation section directly implants the hair bundle into the head surface. Was.

[0003]

However, in a hair transplanter used in a conventional brush manufacturing method, for example, a head surface consisting of two perpendicular planes, a curved head surface, or a head surface having a complicated shape is required. The hair tresses could not be implanted directly. Therefore, there has been a demand for a method for easily and inexpensively manufacturing a brush having a bristle bundle perpendicular or inclined to a specific surface of a complicated space, instead of a conventional open single planar head surface.

[0004]

According to a first aspect of the present invention, there is provided a brush manufacturing method comprising: a first step of implanting a bristle bundle on a support independent of a brush body to obtain a flocking piece; A second step of attaching the flocked piece to the brush body.

According to a second aspect of the present invention, in the first step, the method of implanting the hair bundle is such that the axial direction of the hair bundle and the implanted surface of the support form a predetermined angle of 90 degrees or less. It is.

According to a third aspect of the present invention, in the first step, the bristle bundle is swingable within an angle of 90 degrees or less between an axial direction of the bristle bundle and a flocking surface of the support. Thus, the hair bundle is planted.

According to a fourth aspect of the present invention, in the first step, the bristle bundle is planted so as to be composed of a plurality of columns and a plurality of rows. This is a manufacturing method in which a layer is formed and a cut is made in the thin layer.

According to a fifth aspect of the present invention, in the manufacturing method, the flocking piece is attached to the brush body via an elastic body so that the flocking piece is urged toward the flocking surface in the second step. is there.

In a sixth aspect of the present invention, there is provided a manufacturing method further comprising the step of providing a detachable grip portion on the brush body.

[0010]

Embodiments of the present invention will be described with reference to the accompanying drawings. First, the production of a flocking used in the brush production method according to the present invention will be described. 1 to 7 show a flocking piece used in the brush manufacturing method according to the present invention, FIG. 1 is a perspective view of the flocking piece according to the first invention, FIG. 2 is a perspective view of a flocking piece according to the second invention, and FIG. 3 is a perspective view showing a support of the flocking piece according to the second invention, FIG. 4 is a side view showing the flocking piece transplanted on the support of FIG. 3, and FIG.
FIG. 6 is a partial cross-sectional view of a flocking piece according to the invention, and FIGS. 6 and 7 are perspective views of a flocking piece according to a fourth invention.

First, the flocking piece 2 used in the method according to the first invention is manufactured by flocking a hair bundle 4 on a support 3 substantially vertically.
In this manufacturing process, a flocking machine used in a conventional process can be used. As shown in FIG. 1, the hair bundles 4 are arranged in a row or a row by a hair transplanter (not shown) on one surface 31 of a planar support body 3 in which a plurality of recesses 5 for accommodating a lower portion of the hair bundle 4 are formed. To form a plurality of rows and a plurality of rows of hair bundles. The hair implantation in each row can implant hair bundles one by one, a plurality of hair bundles simultaneously, or a row of hair bundles simultaneously. Here, the vertical column indicates the direction indicated by L in FIG. 1, and the horizontal column indicates the direction indicated by T in FIG. 1, and the same applies to other drawings. In addition, the hair bundle 4 bundles a plurality of hairs and folds them in half at the center (for convenience, the hair bundles are shown in a columnar shape in the drawing. The same applies to other drawings), and the two-fold portion is used. Is fixed to the recess 5 with the brass flat wire 6 interposed therebetween.

The hair bundle 4 whose lower part is accommodated in the recess 5
In order for the hair to be implanted so as to be substantially perpendicular to the surface 3, as shown in FIG.
Are formed substantially perpendicularly to the center, and extend halfway in the thickness direction.

Next, a flocked piece used in the method according to the second invention will be described. As shown in FIG. 2, the hair is implanted so that the angle θ between the axial direction of the hair bundle 4 whose bottom is accommodated in the recess 5 and the surface 31 is less than 90 degrees. Specifically, the hair bundle 3 is implanted in the vertical direction while the surface 31 of the support 3 is inclined by θ from the vertical direction. In this example, a conventional flocking machine can be used. Note that the angle θ is preferably 30 to 60 degrees.

As the support 3, a support as shown in FIG. 3 may be used. This figure shows the opposite surface 3 of the flocking surface 31.
2 shows a state in which the support is seen from FIG. Fitting protrusions 33 and 34 are provided on the surface 32 along the column direction when the hair is planted. In addition, engaging protrusions 35 and 36 are provided at both ends in the row direction when the hair is implanted along the column direction.
As shown in FIG. 4, when implanting the hair, the support 3 is folded toward the surface 32 along the cut 37, and the hair bundle is implanted on the surface 31.

Next, a flocked piece used in the method according to the third invention will be described. The support portion may be cut into a shape as shown in FIG. 5 using a flocking piece manufactured as shown in FIG. 1 or FIG. 2, or a support having a shape as shown in FIG. 5 in advance. Alternatively, the hair bundle 4 provided with the concave portion 5 may be molded, and the hair bundle 4 may be implanted on the surface 31 similarly to FIG. 1 or FIG. Note that each support 3 is a thread member 2
9, 29 '. Although only the thread member on the near side is shown, a plurality of thread members may be provided. Furthermore, even if only one of the thread members 29 or 29 'is used,
A plurality may be provided, and the mounting position on the support 3 is not limited to the illustrated example. Further, by cutting a predetermined portion of the thread member 29, the thread member 29 can be bent toward the surface 31. Further, by cutting the thread members 29 and 29 'together, the predetermined flocking piece 2 can be cut off.

Next, a flock piece used in the method according to the fourth invention will be described with reference to FIGS. 6 and 7. The flocked piece of this example is formed by forming a thin layer along the space between the planted columns on the flocked surface 31 of the support 3 and providing a cut in the thin layer. A thin layer provided with such a cut may be formed on any of the flocks used in the above. The flocked piece used in the method according to the first invention will be described below as an example.

As shown in FIG. 6, first, when the support 3 is formed by molding or the like, a portion of the thin layer 9 between the columns of the concave portions 5 on one surface 31 of the support 3 is formed. Is formed so that is formed. That is, 70% of the thickness direction is provided in the support 3 immediately below the surface 31 along the column of the concave portion 5.
By forming the hollow portion 10 of about 80%, the space between the surface 31 and the hollow portion 10 becomes the thin layer 9 portion. Next, a cut 11 along the column direction is provided in the thin layer 9 portion. The ratio of the hollow portion 10 in the thickness direction is not particularly limited. The flocks thus formed can be bent toward the surface 31 along the cuts 11.

As shown in FIG. 7, the thin layer 9 is provided on the surface 31 so that the surface 3 of the support 3 opposite to the flocking surface 31 is provided.
In the second embodiment, the thin layer 12 along the column may be formed at a position corresponding to the thin layer 9, and the cut 11 may be provided in the thin layer 9 and the cut 13 may be provided in the thin layer 12. In this case,
Such a thin layer 9, 12 can be provided by forming a cavity 14 in the support 3 along the two thin layers 9, 12. Then, by making the cuts 11 and 13, it is possible to cut off the tandem hair piece on the left side in the figure.

The material of the support 3 is not limited as long as it can be molded to accommodate the bottom of the hair bundle, but plastic is preferably used. A plastic material having flexibility is particularly preferable so that the shape of the surface 32 of the support can be complementarily deformed when the support 3 is attached to the inner surface of the brush body.

The flocking piece 2 formed as described above is attached to the brush body 1 as follows.

First, the attachment of the flocked piece shown in FIG. 4 used in the method according to the second invention will be described. FIG. 8 shows a perspective view of the brush main body to which the flock 2 is attached. The brush body 1 is made of a substantially right-angle plate-like member, and a grip 20 is attached to a right-angled portion. Fitting grooves 16 and 17 are formed on the inner surface 15 of the brush body 1 along the longitudinal direction of the grip portion 20. Engagement grooves 18 and 19 are formed at both ends along the longitudinal direction of the end grip 20 of the brush body 1.

First, as shown in FIG. 9, the flocked piece 2 to be attached is folded back from the state shown in FIG. Then
The fitting protrusions 33, 34 of the flocking piece 2 are fitted into the fitting grooves 16, 17 of the brush body 1, respectively, and the engaging protrusions 35, 36 of the flocking piece 2 are fitted into the engaging grooves 18, 19 of the brush body 1. The flocking pieces 2 are attached to the brush body 1 such that the surfaces 32 of the flocking pieces 2 face the inner surface 15 of the brush body 1 while being engaged with each other. Such a brush is shown in FIG. 10, in which only the bristle bundle 4 in the front row is shown.

The method of attaching the flocks to the brush body is not limited to the above method. For example, fitting grooves 33, 33 are provided at the ends of the support in the row direction as shown in FIGS. 1 and 2, and fitting protrusions are provided on the inner surface of the brush body instead of the engaging grooves 18, 19 of FIG. By providing ridges and fitting these ridges into the fitting grooves 33, 33, the flocking pieces may be attached to the brush body.

Further, the brush body to which the flocks are attached is not limited to the one shown in FIG.
The brush body 1 may have an intricately shaped inner surface 15 as shown in FIG. And FIG.
As shown in (1), the inner surface of the brush body 1 may be divided into five parts, and different small flocked pieces 2 may be fitted to each part. In addition, as such a small flocking piece 2, the cut-out parallel flocking piece described in FIG. 7 is preferably used.

Next, FIG. 5 used in the method according to the third invention will be described.
13 will be described with reference to FIGS. 13 and 14. Here, an example is shown in which one of the flocking pieces shown in FIG.
First, as shown in FIG. 13, a flocking piece 2 composed of a support body 3 on which a bristle bundle 4 is transplanted is fitted into a concave streak portion 1 a formed in the brush main body 1 from the near side in the figure toward the back. The concave ridge 1a has a shape substantially complementary to the support 3, but is slightly larger than the support 3 in cross section. The cross-sectional shape of the support 3 is not limited to an oval shape as long as the flock 2 can swing, and may be a circle or another shape.

FIG. 13 shows a free state in which the tip of the bristle bundle 4 is not in contact with the tooth surface for a toothbrush, for example. In this state, no force acts from the outside on the tuft at an angle theta ₁ to the axial direction and the surface 1b of the tuft. In addition, a gap 1c exists from near the center of the right side surface of the concave streak portion 1a shown in FIG. This relatively small gap 1c has an inclined side surface 1d (in the figure, 1c is enlarged for clarity). Incidentally, the angle theta ₁ is preferably 30 to 60 degrees.

On the other hand, FIG. 14 shows a state in which the tip of the bristle bundle 4 moves on the side surface 81 of the tooth 8 from the gum portion 82 toward the upper surface portion 83. In this state, the hair bundle has the tip 4
The force that hinders the movement of the hair bundle 4
Are raised up, the angle formed by the axial direction and the surface 1b of the tufts 4 is increased to theta _2. As a result, the portion of the hair bundle 4 accommodated in the concave streak portion 1a moves so as to substantially fill the gap 1c, and a relatively large gap 1e is formed over the left side surface of the concave portion 5 shown in FIG. Then, when the acting force from the tooth surface 81 disappears, the elasticity of the support 3 becomes a repulsive force and the hair bundle 4
Returns to the state of FIG. Therefore, the material of the support 3 is preferably a plastic or the like having elastic repulsion.

Further, the manufacturing method according to the fifth invention will be described. In this manufacturing method, the flocking piece is attached to the brush body via an elastic body so that the flocking piece is urged toward the flocking surface side.

First, an example using the one shown in FIG. 10 will be described. In FIG. 10, the brush body 1 includes two right-angled portions 21 and 22. An elastic body is provided between the inner surface of one of the portions 21 and the support 3. FIG. 15 shows a partial front view of such a configuration.

The inner surface 15 of one part 21 of the brush body 1
A concave portion 15a for accommodating the support 3 is formed in the substrate.
A gap 28 is formed between the surface 32 of the support 3 accommodated in the concave portion 15a and the bottom surface 15b of the concave portion 15a, and the space 28 widens as the distance from the intersection of the portions 21 and 22 increases. Therefore, the coil spring 23 that connects the bottom surface 15b and the surface 32 is disposed in the gap 28. The coil spring 23 acts to urge the support 3 toward the hair bundle 4. In this way, the entire support 3 can be pivoted slightly repeatedly toward the hair bundle 4 side. The end of the support 3 on the opposite side (lower side in the figure) to the engagement protrusion 34 'is a concave portion 1
It is possible to escape slightly from 5a. Note that, in this example, the fitting groove 16 and the fitting ridge 33 and the engaging groove 18 and the engagement protrusion 35 for engaging the brush body and the support 3 shown in FIG. 10 are not used. And an engagement groove 18 'on the brush body side and an engagement protrusion 35' on the support body 3 side.

Next, as shown in FIG. 16, the brush body 1 is constituted by combining two separate portions 21 and 22 forming a right angle, and a bolt 25 is passed through the combined portion to attach one end 25a to the inside of the grip portion 20. To fix the other end 25b on the side surface of the portion 22. At this time, the bolt 25 is also passed through the center ring 24 a of the helical spring 24, and the bent end 24 b of the helical spring 24 is connected to the holes 21 a, 22 on the side surfaces of the portions 21, 22.
a. The brush body 1 configured in this manner also has the same effect as that shown in FIG. When the helical spring 24 is not interposed,
Although the effect of slightly opening and closing the brush main body is not obtained, the brush main body may have a fixed configuration.

The parts 21 and 22 shown in FIG. 16 are constituted by the parts 21 and 22 shown in FIG. 17. Similarly, the brush main body is not shown by using a combination of a helical spring 24 and a bolt 25. You may make it open and close so that it can be rotated repeatedly to the side. Further, when the helical spring is not interposed, the effect of slightly opening and closing the brush main body is not obtained, but the brush main body may have a fixed configuration.

Further, with the structure shown in FIGS. 18 and 19, the effect of slightly opening and closing the brush body can be obtained in the same manner as described above. In the example shown in both figures, the brush main body 1 is composed of two side portions 27, 27 via an intermediate portion 26. In the combination portion of the intermediate portion 26 and the side portion 27, the side portion 27 and the intermediate portion A brush spring 24 is interposed between the brush body 26 and the brush body 1 to slightly open and close.

[0034]

According to the first aspect of the present invention, there is provided a brush manufacturing method according to the first aspect, wherein a first step of obtaining a flocked piece by flocking a bristle bundle on a support independent of the brush body, and attaching the flocked piece to the brush body. The second step was performed. In this way, a brush having a bristle bundle on a specific surface of the intricate space of the toothbrush, for example, can be manufactured by attaching a flocking piece, which is planted on the support using a conventional flocking machine, to the brush body.

According to a second aspect of the present invention, in the first step, the bristle bundle is implanted such that an axial direction of the bristle bundle and a flocking surface of the support form a predetermined angle of 90 degrees or less. Since the hair can be implanted while being inclined with respect to the implanted surface, for example, in the case of a toothbrush, the sliding force of the hair tip acting on the tooth surface rubbed by the bristle bundle can be increased, and the scum and teeth attached to the tooth surface can be increased. Debris can be scraped efficiently.

According to a third aspect of the present invention, in the first step, the angle between the axial direction of the bristle bundle and the flocking surface of the support is 9 degrees.
Within a range of 0 ° or less, the hair bundle was implanted so that the hair bundle could swing. For example, in the case of a toothbrush, the bristle tip can be pressed more strongly against the tooth surface due to the shaking operation of the bristle tip, so that the scum and plaque adhering to the tooth surface can be scraped more efficiently.

According to a fourth aspect of the present invention, in the first step, the bristle bundle is planted into a plurality of columns and a plurality of rows, and a thin layer is formed on the flocking surface side of the support along the spaces between the columns. Then, a cut was made in the thin layer. Thereby, the flocking surface of the support can be bent so that the flocking piece can be attached to the brush body. When the flocked piece is attached to the brush main body, such flexibility makes it easy to make the surface of the support opposite to the flocked surface conform to, for example, the inner surface shape of the toothbrush main body.

According to a fifth aspect of the present invention, in the second step, the flocking piece is attached to the brush body via an elastic body so that the flocking piece is urged toward the flocking surface side. Therefore, for example, in the case of a toothbrush, the tips of all the bristles can be pressed more strongly against the tooth surface, so that the scum and plaque adhering to the tooth surface can be scraped more efficiently.

According to a sixth aspect of the present invention, the brush body is further provided with a detachable gripping part. Therefore, by replacing the brush body to which the flocked pieces are attached, different brush bodies using the common gripping part can be used. It can be used.

[Brief description of the drawings]

FIG. 1 is a perspective view of a flocking piece used in the first invention according to the present invention.

FIG. 2 is a perspective view of a flocking piece used in the second invention according to the present invention.

FIG. 3 is a perspective view showing a support for a flocking piece used in the second invention according to the present invention.

FIG. 4 is a side view showing a flocking piece used in the second invention according to the present invention.

FIG. 5 is a partial sectional view of a flocked piece used in the third invention according to the present invention.

FIG. 6 is a perspective view showing a flocking piece used in the fourth invention according to the present invention.

FIG. 7 is a perspective view showing a flocking piece used in the fourth invention according to the present invention.

FIG. 8 is a perspective view showing a brush body used in the present invention.

FIG. 9 is a side view showing a flocking piece used in the second invention according to the present invention.

FIG. 10 is a perspective view showing a brush manufactured by the second invention according to the present invention.

FIG. 11 is a front view showing a brush body used in the present invention.

FIG. 12 is a front view showing a brush in which a flocking piece is attached to the brush main body shown in FIG. 12;

13 is a cross-sectional view showing a brush to which the flocking piece shown in FIG. 5 is attached to the brush main body.

FIG. 14 is a cross-sectional view showing a brush to which the flocking piece shown in FIG. 5 is attached to the brush body.

FIG. 15 is a front view showing a state in which a coil spring is interposed between the brush body and the flocking piece in the brush according to the method of the present invention.

FIG. 16 is an exploded perspective view showing a state in which a bolt and an elastic body are interposed in the brush body according to the method of the present invention.

FIG. 17 is a perspective view showing a modification of the brush shown in FIG. 16;

18 is a perspective view showing a modified example of the brush shown in FIG.

FIG. 19 is a perspective view showing a modification of the brush shown in FIG. 16;

[Explanation of symbols]

1. Brush body, 2. Flocked piece, 3. Support, 31
・ ・ Flocked surface, 4 ・ ・ Hair bundle, 9 ・ ・ Thin layer, 11 ・ ・ Cut, 24 ・ ・ Elastic body, 20 ・ ・ Grip part.

Claims (6)

[Claims] 1. A brush comprising: a first step of implanting a bristle bundle on a support independent of a brush body to obtain a flocking piece; and a second step of attaching the flocking piece to the brush body. Production method. 2. The method according to claim 1, wherein in the first step, the tufts are implanted such that the axial direction of the tufts and the implanted surface of the support form a predetermined angle of 90 degrees or less. Method. 3. In the first step, the bristle bundle is swung so that the bristle can swing within an angle of 90 degrees or less between the axial direction of the bristle bundle and the flocking surface of the support. The production method according to claim 1, wherein the hair is planted. 4. In the first step, the bristle bundle is planted so as to be composed of a plurality of columns and a plurality of rows, and a thin layer is formed between the columns on the flocking surface side of the support. The manufacturing method according to any one of claims 1 to 3, wherein a cut is provided in the thin layer. 5. The brush implant according to claim 1, wherein the flocking piece is attached to the brush body via an elastic body so that the flocking piece is urged toward the flocking surface in the second step. The production method according to any one of the preceding claims. 6. The manufacturing method according to claim 1, further comprising a removable grip portion provided on the brush body.