JP4022074B2 - Hair dyeing brush - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hair dyeing brush used for dyeing hair with a cream hair dye.
[0002]
[Prior art]
As a conventional technique of a hair dyeing brush used for dyeing hair with a cream hair dye, there is a technique disclosed in Japanese Utility Model Laid-Open No. 6-15530.
[0003]
In this prior art, the virtual surface formed by the brush tip of the second brush body is inclined with respect to the virtual surface formed by the brush tip of the first brush body. The base surface on which the brush of the second brush body is configured is inclined with respect to the base surface on which the brush of the brush body is configured.
[0004]
In this prior art, the virtual surface formed by the second brush body with respect to the virtual surface formed by the first brush body or the base surface formed by the first brush body, or the second surface. The base surface on which the brush body is constructed has the advantage that it is easy to dye hair in detail, such as the hairline and squeeze-up, and that the hair dye is difficult to adhere to the cheeks. It has become something to demonstrate.
[0005]
[Problems to be solved by the invention]
However, in the above-described prior art, the brush of the second brush body is a dense hair body obtained by bundling a large number of bristle materials and planting them in the extending part of the brush base. There is a problem that the production requires an assembly operation of a plurality of members, which makes the production procedure and member management troublesome.
[0006]
Moreover, since the virtual surface formed by the second brush body is inclined with respect to the virtual surface formed by the first brush body, the virtual surface formed by the second brush body is the first brush. It will be located outside the extension of the virtual surface formed by the body, so that the second brush body can be quickly and accurately opposed to details such as the hairline and bruises, while the brush is not visible. There is a problem that the effect of making the hair dye hardly adhere to the cheeks and ears is not always sufficient.
[0007]
Therefore, the present invention has been devised to solve the above-described problems in the prior art, and at least a brush body composed of a first brush portion and a second brush portion is formed in the same manner as a normal brush. The technical problem is to integrally form the first brush piece and the second brush piece on the lower surface of the flat-plate-shaped brush base, thereby enabling easy shaping of the brush and the first brush. It is an object of the present invention to be able to use the part and the second brush part according to the same handling feeling.
[0008]
[Means for Solving the Problems]
Among the present invention for solving the above technical problems, the means of the invention according to claim 1 is:
Forming a first brush part by sparsely and vertically suspending a number of thick first brush pieces on the lower surface of the substantially rectangular flat plate-like brush base other than the tip part;
A plurality of thin second brush pieces are densely and obliquely extended forward and downward on the lower surface of the tip of the brush base to form a second brush portion;
The inclination angle of the second brush piece with respect to the vertical direction, which is the mold opening direction, is set to a value such that the degree of deformation when the second brush piece is forcibly removed from the injection mold is within the elastic deformation range ,
Configuring a brush body, which is a synthetic resin integral molding, from the first brush portion and the second brush portion;
Connecting a handle that extends obliquely upward to the rear end of the brush body;
It is in.
[0009]
In the invention according to claim 1, the hair brush is applied to the most part of the hair with the same handling sensation as in the past while applying the hair dye with the first brush part, and the details such as hairline and hair swelling are applied. In contrast, a hair dye is applied by the second brush portion.
[0010]
The application of the hair dye to the hairline and squeezed-up details by the second brush part is positioned at the tip of the brush body with the brush body slightly upright with respect to the surface of this application part. Only the second brush part can be in contact with the hair.
[0011]
When applying the hair dye to details such as the hairline and squeaking up with this second brush part, the second brush piece of the second brush part is located on the lower surface of the same brush base as the first brush piece. Therefore, it is possible to handle the second brush part with a handling sensation that is almost equal to the handling feeling when using the first brush part. Therefore, it is easy and easy to handle details that are difficult to see even with a mirror. Hair dye can be applied to the skin.
[0012]
Since the second brush piece of the second brush part is thin in thickness, it can be elastically deformed to some extent, and therefore the deformation degree when forcibly removing the die from the injection mold is elastic. easily be in the range of deformation, thereby excessive die-cut from the injection mold, can be achieved safely and smoothly.
[0013]
Since the first brush piece and the second brush piece are formed integrally with the brush base, at least the brush body can be formed by a single injection molding process, and the molding of the brush is facilitated accordingly.
[0014]
In the invention according to claim 2, in the configuration of the invention according to claim 1, a void portion without the first brush piece is formed in a portion extending over the substantially entire length range of the center portion of the lower surface of the first brush portion. , Is added.
[0015]
In the invention according to claim 2, the first brush piece obstructs the supply of the hair dye to the brush by setting the void portion as the place where the hair dye is attached to the brush. Can be performed safely and smoothly, and the first brush piece will always face the hair dye poured into the empty space, so that it will face the hair. It becomes easy to apply the hair dye uniformly.
[0016]
The invention according to claim 3 is obtained by adding a number of first brush pieces to the configuration of the invention according to claim 1 or 2 in a staggered pattern along the lateral direction.
[0017]
In the invention according to claim 3, since the first brush pieces are arranged in a staggered pattern in the horizontal direction, that is, in the combing direction, the hair is held by the first brush pieces during the combing operation. Preferably, this ensures that the hair dye is applied to the hair.
[0018]
The invention according to claim 4 is obtained by adding the entire hair dyeing brush to the configuration of the invention according to claim 1, 2 or 3 integrally with block copolymerized polypropylene.
[0019]
In the invention according to claim 4, since the gloss of the surface is high, it is possible to obtain a good-looking product, and since the MFR is large and the spiral flow at a low temperature is large, the mold is released from the mold. The second brush piece that is forced out can be molded well without wrinkles or defective deformation, and in a state where it is molded into a brush, the balance between rigidity strength and impact strength is good, so it is stable. As a result, a good whispering operation can be obtained.
[0020]
The invention according to claim 5 is obtained by adding the handle to the brush body in a detachable manner to the configuration of the invention according to claim 1, 2 or 3.
[0021]
In the invention according to claim 5, since the brush body and the handle can be separately molded, each can be molded with a synthetic resin material suitable for the function thereof, and at the time of storage. Compactness can be achieved, which makes it easy to carry and store.
[0022]
The invention described in claim 6 is obtained by adding the structure of the invention described in claim 5 to the fact that the brush body is molded from a soft synthetic resin material and the handle is molded from a hard synthetic resin material.
[0023]
In the invention of claim 6, by molding the brush body with a soft synthetic resin material, the contact of each brush piece against the scalp becomes soft, and the feeling of use of the brush is improved accordingly. By shaping the handle with a hard synthetic resin material, the gripping of the brush becomes stable.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
The brush shown in FIG. 1 to FIG. 5 includes a brush body 1 in which a large number of brush pieces are integrally formed on the lower surface of a rectangular flat brush base 2 and a rear end portion on the upper surface of the brush body 1. The handle 11 that extends obliquely upward and is connected is integrally formed with a relatively hard synthetic resin material such as polypropylene resin that is easy to mold.
[0025]
The brush body 1 includes a large number of first brush pieces 7 on the lower surface of the brush base 2 excluding the front end portion 4 of the brush base 2 provided with a ridge-shaped reinforcing edge 3 having a low height on the peripheral edge of the upper surface. The first brush portion 6 is formed vertically and vertically, and a plurality of thin second brush pieces 10 are densely and obliquely extended forward and downward on the lower surface of the tip portion 4 of the brush base 2. The second brush portion 9 is formed and configured.
[0026]
The brush base 2 has a front cross-sectional shape (see FIG. 4) slightly warped upward in the lateral direction so that the hair combing operation can be satisfactorily achieved. Since the bottom surface of the brush base 2 that is slightly curved is vertically suspended, the distance between the second brush pieces 10 increases from the injection mold, whereas the distance between the two brush pieces 10 increases. Considering unreasonable die cutting, they are configured to be parallel to each other.
[0027]
In the central portion of the lower surface portion of the brush base 2 on which the first brush portion 6 is formed, a void portion 8 (see FIG. 3) without the first brush piece 7 is formed over substantially the entire length range. In the illustrated embodiment, the width of the void portion 8 is set to a value suitable for use of the two-component hair dye.
[0028]
The first brush pieces 7 to be located around the void portion 8 are arranged in a staggered pattern (see FIG. 3) along the direction toward the void portion 8 in order to improve the grasping of the hair. Yes.
[0029]
The second brush piece 10 has an inclination angle of approximately 60 ° (see FIG. 5) with respect to the vertical direction that is the mold opening direction, and its extending tip is virtually assumed where the tip of the first brush piece 7 is located. The extended tip of the second brush piece 10 in the row located on the tip side of the brush base 2 is substantially equal to the tip edge of the brush base 2 or protrudes slightly forward from it. Thus, the hair brush can be satisfactorily applied to the details by the second brush portion 9.
[0030]
The handle 11 extends from the brush body 1 obliquely upward and rearwardly by being integrally provided with the brush body 1 at the connecting portion 12 that rises from the rear end of the upper surface of the brush base 2 and is curved. A plurality of vertical ridge-like slips that prevent the fingertip holding the handle 11 from slipping to the surface of the portion of the handle 11 that extends from the tip of the main body portion to the upper end of the connecting portion 12 A stop 14 is provided.
[0031]
The first embodiment of the present invention shown in FIGS. 1 to 5 is made of the following materials that are considered to be suitable as a brush material: block copolymerized polypropylene (trade name: Novatec PP BC03GS), random copolymer polypropylene (trade name) -Polypropylene Jay Allomer PM940M), linear low-density polyethylene (trade name: Novatec LL UJ480), and high-density polyethylene (trade name: Novatec HD HJ490) were integrally molded and compared.
[0032]
The brush molded with high-density polyethylene is generally lacking in rigidity, becomes cloudy in color, and may be wrinkled on the second brush piece 10 due to excessive force, The brush molded with low-density polyethylene has no problem of releasability, but the rigidity is totally insufficient, and the brush molded with random copolymer polypropylene is somewhat insufficient in rigidity. Since the second brush piece 10 is slightly bent and deformed, it is difficult to obtain a stable feeling of use.
[0033]
On the other hand, the brush molded with block copolymerized polypropylene exhibits a sufficient rigidity and can obtain a very stable feeling of use, and can obtain a high moldability due to a large MFR. At the same time, since low temperature molding is possible, the production efficiency can be increased, and the balance between the combination of the flexural modulus and the impact strength is good, so that unreasonable removal can be achieved smoothly.
[0034]
FIG. 6 shows a second embodiment of the present invention in which the brush body 1 and the handle body 11 are configured as separate objects. In the center of the rear end of the upper surface of the brush base 2 of the brush body 1, A key that is long and has a block-shaped first engagement portion 5 provided with a key groove on both side surfaces, and is engaged with the key groove of the first engagement portion 5 at the lower end opening edge of the coupling portion 12 of the handle 11. And a long square groove-shaped second engagement portion 13 is provided at the rear opening end of the first engagement portion 5 at the front and rear of the engagement portion. The parts 5 and 13 make the brush body 1 and the handle 11 detachable.
[0035]
When the brush body 1 and the handle body 11 are configured as separate objects, the brush body 1 is molded from a relatively soft synthetic resin material having a good moldability, for example, a soft polyethylene resin, and the handle body 11 is relatively It is good to mold with a hard synthetic resin material, for example, a polypropylene resin.
[0036]
If the brush body 1 is molded from a relatively soft synthetic resin material, the second brush piece 10 can be easily forcibly removed, so that the occurrence of defective products due to the forcible removal can be almost eliminated. The inclination angle of 10 can be increased to increase the ease of use of the second brush portion 9, and the contact of the brush pieces 7 and 10 with the scalp can be softened. It becomes.
[0037]
Further, when the pattern body 11 is molded from a relatively hard synthetic resin material, a stable grip of the brush can be obtained due to its stable self-shape holding ability, and thereby the hair can be stably and smoothly combed. it can.
[0038]
【The invention's effect】
Since the present invention has the above-described configuration, the following effects can be obtained.
In the first aspect of the invention, since the first brush portion and the second brush portion are disposed on the same lower surface of the flat plate-like brush base, both brush portions can be handled with substantially the same handling sensation. Even if it is a hair part which cannot be visually observed with a mirror, a hair dye can be apply | coated reasonably correctly.
[0039]
Since the second brush piece is thinned, elasticity can be imparted to the second brush piece, whereby the irrational punching of the second brush piece can be safely carried out with deformation within the elastic deformation range , The production of the brush body can be achieved easily, quickly and inexpensively.
[0040]
In the invention described in claim 2, the hair dyeing agent can be supplied and dispensed safely and smoothly, and the first brush piece is provided for the hair dye poured into the empty space. Since they always face each other from the combing direction, it becomes easy to uniformly apply the hair dye to the hair.
[0041]
In the invention according to the third aspect, the hair is preferably held by the first brush piece during the combing operation, whereby the hair dye can be reliably applied to the hair.
[0042]
In the invention according to claim 4, it is possible to stably obtain a good feeling of use and to obtain a good and efficient productivity by sufficient rigidity, high moldability and good surface gloss. A more preferable appearance appearance is obtained.
[0043]
In the invention of claim 5, since each of the brush body and the handle can be molded with a synthetic resin material suitable for the function, a more preferable function and feeling of use can be exhibited, and when stored. Therefore, it is easy to carry and store.
[0044]
In the invention described in claim 6, it is possible to obtain a more preferable feeling of use and to more easily form the brush body.
[Brief description of the drawings]
FIG. 1 is an overall side view showing an embodiment of the present invention.
FIG. 2 is a longitudinal side view of the embodiment shown in FIG.
3 is a bottom view of the embodiment shown in FIG. 1. FIG.
4 is an enlarged vertical front view of the first brush portion of the embodiment shown in FIG. 1. FIG.
5 is an enlarged longitudinal sectional side view of a second brush portion of the embodiment shown in FIG. 1. FIG.
FIG. 6 is an exploded overall perspective view showing another embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1; Brush body 2; Brush base 3; Reinforcement edge part 4; Tip part 5; First engagement part 6; First brush part 7; First brush piece 8; Space part 9; 2 brush pieces 11; handle 12; connecting portion 13; second engaging portion 14;

Claims (6)

A large number of first brush pieces (7) are sparsely and vertically suspended on the lower surface of the brush base (2) having a substantially rectangular flat plate shape excluding the tip (4). ) And a plurality of thin second brush pieces (10) are densely and obliquely extended forward and downward on the lower surface of the tip portion (4) of the brush base (2) to form the second brush portion (9). ), And the inclination angle of the second brush piece (10) with respect to the vertical direction that is the mold opening direction is such that the degree of deformation when the second brush piece (10) is forcibly removed from the injection mold is elastic. The brush body (1), which is a synthetic resin integral molded product, is set to a value that falls within the deformation range, and the handle body (1) extends obliquely rearward and upward at the rear end of the brush body (1). 11) A hair dyeing brush formed by linking the above. The hair dyeing brush according to claim 1, wherein a void portion (8) having no first brush piece (7) is formed in a portion of the first brush portion (6) over the substantially entire length range of the central portion of the lower surface. The hair dyeing brush according to claim 1 or 2, wherein a number of first brush pieces (7) are arranged in a staggered pattern along the lateral direction. 4. A hair dyeing brush according to claim 1, 2 or 3, which is integrally formed of block copolymerized polypropylene. The hair dyeing brush according to claim 1, 2 or 3, wherein the handle (11) is detachably connected to the brush body (1). 6. The hair dyeing brush according to claim 5, wherein the brush body (1) is molded from a soft synthetic resin material, and the handle (11) is molded from a hard synthetic resin material.

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