The present invention relates to a brush head for facial skin cleaning for cleaning the surface of the skin of the face.
Brush heads for cleaning are sometimes used, for example, for cleaning the surface of the skin of the face, or applying cosmetics. In order that such brush heads for washing are used preferably for cleaning the surface of the skin of the face, it is strongly desired that the brush heads be designed to have a unique function which is specialized in cleaning the surface of the skin of the face so that both comfort and an effect of cleaning off dirt from the surface of the skin can be provided. Current brush heads for cleaning typically have general bristle-type designs at present. Such bristle-type designs are liable to apply load to the skin of the face in use, which may hinder appropriate washing of the skin. Even when a user applies additional pressure to the brush head so as to clean the skin of the face appropriately and further effectively, simply applying the pressure is not very effective, which results in a risk of damaging the skin.
Meanwhile, as an example of commodities having the bristle-type designs, there are toothbrushes for cleaning the inside of the oral cavity. In order that plaque and the like can be effectively removed by efficiently performing appropriate brushing in accordance with types of teeth such as front teeth and back teeth, or with parts of the teeth such as interdental areas, surface portions of the teeth, cervical portions, and back portions of the teeth, and in order that excellent feel can be provided during the brushing, various ingenuity is applied, for example, to arrangements of bristle bundles and to shapes of ends of bristles of the toothbrushes. Specifically, in a known toothbrush, the ends of the bristles to be implanted into the brush head are formed into a tapered shape, or preferably into a spherical shape to form protruding curved surfaces. In such a way, a unique feature is added to the bristles. In addition, other toothbrushes having brush heads in various forms in which, for example, dimensions such as their lengths and diameters of the bristles are variously set, and in which ingenuity is applied to combinations of types of the bristles or arrangements of the bristles also have been disclosed (refer, for example, to Patent Literature 1, Patent Literature 2, Patent Literature 3, and Patent Literature 4).
According to the present invention, there is provided a brush head for facial skin cleaning for cleaning a surface of skin of a face,
The plurality of bristle bundles include:
The plurality of tip-end-curved bristle bundles and the plurality of tapered bristle bundles are implanted in the plurality of implantation holes in the front portion so that the plurality of tip-end-curved bristle bundles and the plurality of tapered bristle bundles have a same height.
The plurality of tip-end-curved bristle bundles
The plurality of tapered bristle bundles
the plurality of tapered bristle bundles includes
the inner tapered-bristle bundle group includes a center tapered-bristle bundle row formed of the plurality of first tapered bristle bundles.
The plurality of second tapered bristle bundles and the plurality of tip-end-curved bristle bundles are implanted in a symmetrical arrangement on both sides relative to the central cross line.
Unlike the brush heads of the toothbrushes, as described above, the brush heads to be used for cleaning the surface of the skin of the face have not been designed at present to have the unique function that is specialized in cleaning the surface of the skin of the face so that both the comfort and the effect of cleaning off dirt from the surface of the skin can be provided. However, it is probable that the brush heads for facial skin cleaning, the brush heads being used for cleaning the surface of the skin of the face, can be designed to have the unique function that is specialized in cleaning the surface of the skin of the face by applying ingenuity, for example, to the arrangements of the bristle bundles to be implanted and to shapes of the ends of the bristles of the brush heads for facial skin cleaning like applying ingenuity to the brush heads of the toothbrushes.
The present invention relates to a brush head for facial skin cleaning, the brush head being designed to have a unique function that is specialized in cleaning the surface of the skin of the face, thereby being capable of providing both comfort and an effect of cleaning off dirt from the surface of the skin.
According to the present invention, there is provided a brush head for facial skin cleaning for cleaning a surface of skin of a face,
The plurality of bristle bundles include:
The plurality of tip-end-curved bristle bundles and the plurality of tapered bristle bundles are implanted in the plurality of implantation holes in the front portion so that the plurality of tip-end-curved bristle bundles and the plurality of tapered bristle bundles have a same height.
The plurality of tip-end-curved bristle bundles
The plurality of tapered bristle bundles
the plurality of tapered bristle bundles includes
the inner tapered-bristle bundle group includes a center tapered-bristle bundle row formed of the plurality of first tapered bristle bundles.
The plurality of second tapered bristle bundles and the plurality of tip-end-curved bristle bundles are implanted in a symmetrical arrangement on both sides relative to the central cross line.
As illustrated in
In addition, the brush head 10 for facial skin cleaning according to the first embodiment is a brush head for cleaning the surface 23 of the skin of the face. The brush head is joined preferably integrally to the handle portion 21, and is used as a part of the tool 20 for facial skin washing. As illustrated also in
The plurality of bristle bundles 14 and 15 respectively include a plurality of tip-end-curved bristle bundles 14 (refer to
In addition, the inner tapered-bristle bundle group 15A includes a center tapered-bristle bundle row 15B (refer to
Further, in the brush head 10 according to the first embodiment, in the inner region at a central part of the front portion 11 of the implantation base portion 13, as six to ten central implantation holes 19c, for example, six implantation holes 19 are provided preferably in a symmetrical arrangement at three to five locations (three locations in the first embodiment) each on both sides relative to the central cross line C1 (refer to
Even further, in the brush head 10 according to the first embodiment, the tip-end-curved bristle bundles 14 and the tapered bristle bundles 15 are implanted preferably in a symmetrical arrangement on both sides relative to a perpendicular center-cross line C2 (refer to
Yet further, in the brush head 10 according to the first embodiment, the implantation base portion 13 preferably includes the front portion 11 and the rear portion 12 each having a circular shape.
In the first embodiment, as illustrated in
In the first embodiment, the implantation base portion 13 of the brush head 10 includes the front portion 11 and the rear portion 12 each having the circular shape and a diameter of, for example, approximately 23 mm, and has a thickness of, for example, approximately 4 mm. The front portion 11 and the rear portion 12 are connected to each other in a thickness direction via an outer peripheral portion 13a (refer to
Even further, as illustrated in
The plurality of bristles 17 and 18 that respectively form the plurality of bristle bundles 14 and 15 and are implanted in the plurality of implantation holes 19 in the front portion 11 of the implantation base portion 13 may be formed with use of, for example, resin materials including polyamide (such as 6-12 nylon, 6-10 nylon, and 12-nylon), polyester (such as polyethylene terephthalate, polybutylene terephthalate, and polytrimethylen terephthalate), polyolefin (such as polypropylene), and elastomers (such as olefinic ones and styrenic ones), or combinations of them. The bristles 17 and 18 are each formed to have a circular cross-sectional shape with a diameter of, for example, approximately 0.14 to 0.18 mm. The bristles 17 and 18 may each be formed preferably to have a length such that the height h (refer to
In addition, in the first embodiment, among the plurality of bristle bundles 14 and 15, ones that form the tip-end-curved bristle bundles 14 correspond to the tip-end-curved bristles 17 (refer to
The protruding curved surface 17b formed at the tip end portion 17a of each of the tip-end-curved bristles 17 enables dead skin cells on the surface 23 of the skin to be easily exfoliated, and dirt, dust, sebum, and the like to be easily removed. With this, an effect of cleaning the skin of the face can be enhanced, which can be utilized also for preventing acne, pimples, blackheads, leukoderma, and the like.
The tapered bristles 18 are bristles each including the tapered part 18b reduced in the cross-sectional area toward the tip end portion 18a. In the first embodiment, the tip end portion 18a is formed so that a tip end reduced in the cross-sectional area is formed to have a diameter (width) of, for example, approximately 0.005 to 0.055 mm. Such a tapered shape of the tip end portion 18a enables the tip end to be inserted into micropores 24 (refer to
In addition, in the first embodiment, the tip-end-curved bristles 17 and the tapered bristles 18 can respectively be formed into the tip-end-curved bristle bundles 14 and the tapered bristle bundles 15 by bundling, for example, ten to thirty bristles 17 and 18 as many as predetermined numbers in accordance with a horizontal cross-sectional area of each of the implantation holes 19. (In
In the first embodiment, as illustrated in
In addition, in the front portion 11 of the implantation base portion 13, forty-six implantation holes 19 provided in a region on an inner side relative to the plurality of outer-peripheral implantation holes 19a therearound correspond to the plurality of inner implantation holes 19b. The tapered bristle bundles 15 are implanted in the inner implantation holes 19b preferably to have the same height h of 12.5 to 16 mm. With this, the inner tapered-bristle bundle group 15A is formed.
Note that, in the first embodiment, eight implantation holes 19 provided on the center cross line C1 (refer to
Further, in the first embodiment, in the inner region 11b at the central part of the front portion 11 of the implantation base portion 13, six central implantation holes 19c are provided preferably in the symmetrical arrangement at three locations each on both the sides relative to the central cross line C1. The tip-end-curved bristle bundles 14 are implanted in the central implantation holes 19c preferably to have the same height h of 12.5 to 16 mm. With this, the center tip-end-curved-bristle bundle groups 14B are formed in such a manner that the center tapered-bristle bundle row 15B is sandwiched between the center tip-end-curved-bristle bundle groups 14B. Preferably four to ten central implantation holes 19c in which the tip-end-curved bristle bundles 14 are implanted may be provided in a symmetrical arrangement at two to five locations each on both the sides relative to the central cross line C1.
Even further, in the first embodiment, the tapered bristle bundles 15 other than those in the center tapered-bristle bundle row 15B and the tip-end-curved bristle bundles 14 are implanted in the symmetrical arrangement on both the sides relative to the central cross line C1. The tip-end-curved bristle bundles 14 and the tapered bristle bundles 15 are implanted preferably in the symmetrical arrangement on both the sides relative to the perpendicular center-cross line C2 (refer to
The brush head 10 according to the first embodiment, the brush head 10 having the above-described configuration, enables cleaning of the skin of the face, for example, by pressing, by the user who holds the handle portion 21, the tip end part of the brush portion 16 formed of the plurality of bristle bundles 14 and 15 implanted in the front portion 11 of the brush head 10 against a desired position on the surface 23 of the skin of the face, applying desired pressure, and sliding the brush head 10 along the surface 23 of the skin.
In other words, the brush head 10 according to the first embodiment includes the outer-peripheral tip-end-curved-bristle bundle group 14A formed, for example, of the twenty-six tip-end-curved bristle bundles 14, and the inner tapered-bristle bundle group 15A formed, for example, of the forty-six tapered bristle bundles 15 arranged in the inner region relative to the outer-peripheral tip-end-curved-bristle bundle group 14A. These tip-end-curved bristle bundles 14 and tapered bristle bundles 15 are each implanted preferably to have the same height h of 12.5 to 16 mm. The inner tapered-bristle bundle group 15A includes the center tapered-bristle bundle row 15B (refer to
For example, by the tip-end-curved bristles 17 of the preferably twenty-six tip-end-curved bristle bundles 14 that form the outer-peripheral tip-end-curved-bristle bundle group 14A, a grainy sensation during contact can be effectively alleviated. In addition, by moving the brush portion 16 along the surface 24 of the skin of the face, the skin of the face can be massaged further comfortably with use of the brush head 10. At the same time, the surface of the skin of the face can be washed (cleaned), and hence dead skin cells can be exfoliated, and dirt, dust, sebum, and the like can be removed.
Further, for example, by the tapered bristles 18 of the preferably forty-six tapered bristle bundles 15 that form the inner tapered-bristle bundle group 15A, specifically, by causing tapered tip ends of these tapered bristles 18 to enter the pores 24 in the surface 23 of the skin of the face, these pores 24 can be effectively washed (cleaned). In addition, the tapered bristle bundles 15 are implanted to have the same height h as that of the tip-end-curved bristle bundles 14 in the inner region that is surrounded by the outer-peripheral tip-end-curved-bristle bundle group 14A. Thus, by causing the tip-end-curved bristle bundles 14 of the outer-peripheral tip-end-curved-bristle bundle group 14A to support pressing force at the time when the brush portion 16 is pressed against the surface 23 of the skin of the face, a pricking sensation that is felt under a state in which the tapered tip ends of the tapered bristles 18 of the tapered bristle bundles 15 are held in contact with the surface 23 of the skin of the face can be effectively alleviated and suppressed.
Even further, the preferably-eight tapered bristle bundles 15 that form the inner tapered-bristle bundle group 15A are included in this inner tapered-bristle bundle group 15A, and are implanted as the center tapered-bristle bundle row 15B on the center cross line C1 (refer to
As described above, the brush head 10 according to the first embodiment is designed to have a unique function that is specialized in cleaning the surface 23 of the skin of the face. With this, both the comfort and the effect of cleaning off dirt from the surface 23 of the skin can be effectively provided.
Further, in the brush head 10 according to the first embodiment, the center tip-end-curved-bristle bundle groups 14B formed of the six tip-end-curved bristle bundles 14 arranged preferably in the symmetrical arrangement at the three locations each are formed in such a manner that the center tapered-bristle bundle row 15B is sandwiched between the center tip-end-curved-bristle bundle groups 14B. Thus, by moving the brush head 10 while pressing the tip end portions 17a of the tip-end-curved bristles 17 of the tip-end-curved bristle bundles 14 of the center tip-end-curved-bristle bundle groups 14B against the surface 24 of the skin of the face so that the tip end portions 17a also support the pressing force, the brush portion 16 is further stably moved along the surface 24 of the skin of the face. With this, the massage and the cleaning can be further comfortably performed while moving the brush head 10 along the surface 24 of the skin of the face.
Even further, in the brush head 10 according to the first embodiment, the tip-end-curved bristle bundles 14 and the tapered bristle bundles 15 are implanted preferably in the symmetrical arrangement on both the sides relative to the perpendicular center-cross line C2 that crosses the center of the inner region and that is perpendicular to the center cross line C1. With this, the overall balance to be achieved by these bristle bundles 14 and 15 is further enhanced, and the massage and the cleaning can be further comfortably performed while moving the brush portion 16 along the surface 24 of the skin of the face.
The brush head 10 illustrated in
The brush head 10 illustrated in
The brush heads 10 for facial skin cleaning according to the other forms illustrated in
Specifically, in the brush head 30 for facial skin cleaning according to the second embodiment, the implantation base portion 33 includes the front portion 31 and the rear portion each having the elliptical shape and sized to have, for example, a minor diameter of approximately 20 mm and a major diameter of approximately 30 mm. Similar to the brush head 10 for facial skin cleaning according to the first embodiment, in the front portion 31, the plurality of (a large number of) implantation holes are opened. The implantation holes are each formed to have the circular cross-sectional shape with the diameter of, for example, approximately 1.2 mm, and preferably to have the depth of approximately 3 mm (refer to
Further, in the second embodiment, in the front portion 31 of the implantation base portion 33, the plurality of (large number of) implantation holes are spaced apart from one another at a predetermined interval in a scattered arrangement with the implantation holes lined up vertically and horizontally in a staggered pattern, for example, in the implantation region such as the vertically-elongated hexagonal region. Of these implantation holes, for example, thirty implantation holes arranged at an outermost peripheral part correspond to a plurality of outer-peripheral implantation holes. The tip-end-curved bristle bundles 14 are implanted in the outer-peripheral implantation holes preferably to have the height h of 12.5 to 16 mm. With this, an outer-peripheral tip-end-curved-bristle bundle group 34A is formed (refer to
In addition, in the front portion 31 of the implantation base portion 33, fifty-three implantation holes provided in a region on an inner side relative to the plurality of outer-peripheral implantation holes therearound correspond to a plurality of inner implantation holes. The tapered bristle bundles are implanted in the inner implantation holes preferably to have the same height h of 12.5 to 16 mm. With this, the inner tapered-bristle bundle group 35A is formed.
Note that, in the second embodiment, eleven implantation holes provided on the center cross line C1 that crosses a center of the inner region correspond to a plurality of center-row implantation holes. The inner tapered-bristle bundle group 35A includes a center tapered-bristle bundle row 35B formed of the tapered bristle bundles 15 implanted in the center-row implantation holes.
Further, in the second embodiment, preferably in the inner region at a central part of the front portion 31 of the implantation base portion 33, eight central implantation holes are provided in a symmetrical arrangement at four locations each on both the sides relative to the central cross line C1. The tip-end-curved bristle bundles 14 are implanted in the central implantation holes preferably to have the same height h of 12.5 to 16 mm. With this, center tip-end-curved-bristle bundle groups 34B are formed in such a manner that the center tapered-bristle bundle row 35B is sandwiched between the center tip-end-curved-bristle bundle groups 34B.
Even further, in the second embodiment, the tapered bristle bundles 15 other than those in the center tapered-bristle bundle row 35B and the tip-end-curved bristle bundles 14 are implanted in the symmetrical arrangement on both the sides relative to the central cross line C1. The tip-end-curved bristle bundles 14 and the tapered bristle bundles 15 are implanted preferably in a symmetrical arrangement on both the sides relative to the perpendicular center-cross line C2 that crosses the center of the inner region and that is perpendicular to the center cross line C1.
The brush head 30 according to the second embodiment, the brush head 30 having the above-described configuration, similar to the brush head 10 according to the first embodiment, enables cleaning of the skin of the face, for example, by pressing, by the user who holds the handle portion 21, a tip end part of a brush portion 36 formed of the plurality of bristle bundles 14 and 15 implanted in the front portion 31 of the brush head 30 against a desired position on the surface 23 of the skin of the face, applying desired pressure, and sliding the brush head 30 along the surface 23 of the skin.
In addition, the brush head 30 according to the second embodiment includes the outer-peripheral tip-end-curved-bristle bundle group 34A formed, for example, of the thirty tip-end-curved bristle bundles 14, and the inner tapered-bristle bundle group 35A formed, for example, of the fifty-three tapered bristle bundles 15 arranged in the inner region relative to the outer-peripheral tip-end-curved-bristle bundle group 34A. These tip-end-curved bristle bundles 14 and tapered bristle bundles 15 are each implanted preferably to have the same height h of 12.5 to 16 mm. The inner tapered-bristle bundle group 35A includes the center tapered-bristle bundle row 15B formed, for example, of the eleven tapered bristle bundles 15 implanted in the plurality of center-row implantation holes provided on the center cross line C1 that crosses the center of the inner region. The tapered bristle bundles 15 other than those in the center tapered-bristle bundle row 35B and the tip-end-curved bristle bundles 14 are implanted in the symmetrical arrangement on both the sides relative to the central cross line C1. Thus, by preferably balancing and arranging the plurality of these tip-end-curved bristle bundles 14 and tapered bristle bundles 15, the same functions and the same advantages as those of the above-described brush head 10 for facial skin cleaning according to the first embodiment can be provided.
The brush head 30 illustrated in
The brush head 30 illustrated in
The brush head 30 illustrated in
The brush heads 30 for facial skin cleaning according to the other forms illustrated in
Note that, the present invention is not limited to the above-described embodiments, and may be variously modified. For example, the tip-end-curved bristle bundles and the tapered bristle bundles need not necessarily be implanted in the symmetrical arrangements on both the sides relative to the perpendicular center-cross line that crosses the center of the inner region and that is perpendicular to the center cross line. The implantation base portion may include the front portion and the rear portion each having a shape other than the circular shape or the elliptical shape. The tip end portion of each of the tip-end-curved bristles may have the protruding curved surface not by being provided with the spherical portion but by being rounded. The brush head for facial skin cleaning according to the present invention need not necessarily be used while joined integrally to the handle portion, and may be used, for example, by forming the implantation base portion into a hand-friendly shape so that the brush head for facial skin cleaning itself is preferably held in hand.
Now, toothbrushes for facial skin cleaning according to the present invention are described in further detail in Examples and Comparative Examples. The present invention is not limited at all to the following description of Examples and Comparative Examples.
A brush head that had the same configuration as that of the brush head according to the first embodiment, the brush head being illustrated in
A brush head that had the same configuration as that of the brush head according to Example 1 except that the plurality of tip-end-curved bristle bundles and the plurality of tapered bristle bundles were implanted in a scattered arrangement in a front portion of an implantation base portion as illustrated in
The pricking sensations were evaluated by sensory evaluation where a plurality of participants evaluated pain that was similar to needle pricks and that was felt at a time when the brush heads were moved along the surfaces of the skin of their faces. A rating of “1” represents that the pain was not felt, a rating of “2” represents that the pain was somewhat felt, and a rating of “3” represents that the pain was felt.
The grainy sensations were evaluated by sensory evaluation where the plurality of participants evaluated pain that was similar to rubbing with a grainy rough surface and that was felt at the time when the brush heads were moved along the surfaces of the skin of their faces. A rating of “1” represents that the pain was not felt, a rating of “2” represents that the pain was somewhat felt, and a rating of “3” represents that the pain was felt.
The smoothness of the movement on the surface of the skin of the face was evaluated by sensory evaluation where the plurality of participants determined that the smoothness of the movement was excellent if they felt movement of brushing with bristles by moving the brush heads along the surfaces of the skin of their faces. A rating of “1” represents that the smoothness of the movement was felt, a rating of “2” represents that the smoothness of the movement was somewhat felt, and a rating of “3” represents that the smoothness of the movement was not felt.
The evaluation results shown in Table 1 demonstrate that the brush heads according to Examples 1 to 4 provided better comprehensive evaluation of the pricking sensations, the grainy sensations, and the smoothness of the movement on the surface of the skin of the face than that of the brush heads according to Comparative Examples 1 to 4.
The brush head for facial skin cleaning according to the present invention is designed to have a unique function that is specialized in cleaning the surface of the skin of the face. With this, both the comfort and the effect of cleaning off dirt from the surface of the skin can be provided.
This application claims the benefit of priority to provisional application No. 63/477,980 filed Dec. 30, 2022, the entire contents of which are incorporated herein by reference.
Number | Date | Country | |
---|---|---|---|
63477980 | Dec 2022 | US |