Brush

Abstract

To provide a brush which can be divided into a plurality of same brush pieces, enables a user to simultaneously use each one of the divided brush pieces by respectively gripping it by right and left hands, and can facilitate the manufacturing process.SOLUTION: A brush 100 comprises a pair of brush pieces 11, 12 including: a base 15; and a plurality of pins 17 projecting from one front surface 19 of the base 15. The pair of brush pieces 11, 12 are the same and each one of the brush pieces 11, 12 has a mutually detachable connection part 20. The connection part 20 has at least one group of projection parts 21. In the brush 100, each one of the projection parts 21 constituting the group of projection parts 21 is arranged by deviation in a thickness direction of the base 15 and also arranged by deviation in a direction to cross with the thickness direction of the base 15.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a brush, and more particularly to a brush that can be divided into multiple identical brush pieces, allowing the brush to be held in each hand and used simultaneously, and that can be manufactured simply. [Background technology]

[0002] BACKGROUND ART Conventionally, brushes (scalp brushes) have been used for the purpose of washing and massaging the scalp, for example, in beauty salons and hair salons.

[0003] Many types of brushes are known, and for example, a brush has been reported that has both cleaning bristles and massaging protrusions, and that these bristles and protrusions provide a sufficient feeling of cleaning and pressure from a massage (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2020-96775 Summary of the Invention [Problem to be solved by the invention]

[0005] In beauty salons and hairdressers, stylists often use brushes to cleanse and massage the scalp of customers, and sometimes stylists hold two brushes in both hands instead of just one, to cleanse the scalp. Using two brushes simultaneously in this way has the advantage of improving the massage effect (i.e., applying pressure and stimulation evenly to the left and right sides of the customer's head with the brushes simultaneously can increase blood flow, etc.) and shorten the treatment time.

[0006] However, when using two brushes simultaneously by holding one in each hand, the scalp brush of Patent Document 1 requires the preparation of two brushes. Preparing two brushes requires purchase costs and storage space for the two brushes. Therefore, there has been a demand for the development of a brush that can be divided into multiple pieces, each of which can be held in each hand and used simultaneously, and which can be manufactured simply.

[0007] The present invention has been made in view of the problems of the prior art, and its object is to provide a brush that can be separated into a plurality of identical brush pieces, each of which can be held in each hand and used simultaneously, and which can be manufactured in a simple process. [Means for solving the problem]

[0008] According to the present invention, there is provided a brush as follows.

[0009] [1] A brush comprising a pair of brush pieces each having a base and a plurality of pins protruding from one surface of the base, The pair of brush pieces are identical; Each of the brush pieces has a connecting portion that allows them to be attached and detached to each other, The connecting portion has at least one pair of protrusions, A brush, wherein each of the convex portions constituting the set of convex portions is arranged to be offset in the thickness direction of the base and also offset in a direction intersecting the thickness direction of the base.

[0010] [2] The convex portion of one of the brush pieces and the convex portion of the other brush piece are arranged facing each other, The brush described in [1] above, wherein the convex portions facing each other have a protrusion formed on one of the convex portions and a recess formed on the other convex portion that fits into the protrusion.

[0011] [3] The brush described in [2] above, wherein the protrusion has an upright wall at its base, and the recess has an inner wall that contacts the upright wall.

[0012] [4] The brush according to any one of [1] to [3], wherein the connecting portion has two or more sets of the protrusions.

[0013] [5] The brush according to any one of [1] to [3], wherein the base is made of a synthetic resin having a durometer type A hardness of 30 to 68.

[0014] [6] The brush according to [2] or [3], wherein the protrusions on the convex portions have dome-shaped portions. [Effects of the Invention]

[0015] The brush of the present invention can be divided into a plurality of identical brush pieces, each of which can be held in each hand and used simultaneously, and further has the advantage that the manufacturing process is simple. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a perspective view schematically showing one embodiment of a brush of the present invention. [Figure 2] 1 is a plan view schematically showing one embodiment of a brush of the present invention. FIG. [Figure 3] 3 is a side view schematically showing one embodiment of the brush of the present invention as viewed in the direction A shown in FIG. 2.

[0023] FIG. [Figure 4] 1 is an explanatory diagram showing a schematic diagram of one embodiment of the brush of the present invention divided into individual brush pieces. FIG. [Figure 5] FIG. 5 is a plan view schematically showing one of the brush pieces shown in FIG. 4. [Figure 6] FIG. 5 is a perspective view schematically showing one of the brush pieces shown in FIG. 4. DETAILED DESCRIPTION OF THE INVENTION

[0017] The following describes embodiments of the present invention, but it should be understood that the present invention is not limited to the following embodiments, and that appropriate modifications and improvements to the following embodiments based on the ordinary knowledge of those skilled in the art, as long as they do not deviate from the spirit of the present invention, also fall within the scope of the present invention.

[0018] (1) Brush: One embodiment of the brush of the present invention is a brush 100 shown in Figures 1 to 3. This brush 100 includes a pair of brush pieces 11, 12, each having a base 15 and a plurality of pins 17 protruding from one surface 19 of the base 15. The pair of brush pieces 11, 12 are identical, and each has a connecting portion 20 that allows the brush pieces 11, 12 to be detachably attached to each other. This connecting portion 20 has at least one set of protrusions 31, and the protrusions 21 constituting the set of protrusions 31 are arranged offset in the thickness direction L1 of the base 15 and in a direction L2 intersecting the thickness direction L1 of the base 15, as shown in Figure 5. Figure 3 is a side view of the brush 100, viewed in the direction of arrow A in Figure 2.

[0019] As shown in FIG. 4, this brush 100 can be separated into one brush piece 11 and the other brush piece 12, allowing a user such as a stylist to hold each brush piece 11, 12 in each hand and use them simultaneously. Using multiple brush pieces 11, 12 to simultaneously massage the scalp in this manner has the advantage of improving the massage effect. Furthermore, the brush of the present invention has a simple manufacturing process. Specifically, since the pair of brush pieces 11, 12 are identical (i.e., have the same size and shape), only one mold is required for manufacturing them, and each brush piece 11, 12 can be produced using the same mold. In other words, if the pair of brush pieces are not identical (i.e., have different sizes and shapes), a separate mold must be prepared for each brush piece. Molds are expensive and time-consuming to manufacture. Furthermore, separate manufacturing equipment is required to manufacture each brush piece, and additional space must be secured for the manufacturing equipment. Therefore, if the pair of brush pieces are identical, the above problems can be avoided. 5 is a plan view schematically showing one of the brush pieces 11 shown in FIG. 4 as viewed from the direction of arrow B, and FIG. 6 is a perspective view schematically showing one of the brush pieces 11 shown in FIG. 4.

[0020] (1-1) A pair of brush pieces: Each of the pair of brush pieces 11, 12 has a base 15 and a plurality of pins 17 protruding from one surface of the base 15. As described above, the pair of brush pieces 11, 12 are identical. "Identical" here means that they have the same shape and size. Therefore, they may be made of different materials, or may be made of the same material but with different hardnesses.

[0021] There are no particular limitations on the material of the brush 100, and any conventionally known material can be appropriately selected, such as silicone, urethane, rubber, plastic, or other synthetic resin material.

[0022] The base 15 and the pin 17 may be made of the same material or different materials, and the base 15 and the pin 17 may be integrated or separate.

[0023] The thickness and size of the base 15 are not particularly limited, and the same base as that of a conventionally known brush can be appropriately adopted.

[0024] The number, shape, and size of the pins 17 are not particularly limited, and pins similar to those of conventionally known brushes can be appropriately used.

[0025] The base 15 can be made of a synthetic resin having a hardness of 30 to 68 according to Durometer Type A in accordance with JIS K6253-3, and preferably has a hardness of 40 to 60. This allows the brush pieces 11, 12 to be easily separated and connected. Furthermore, the hardness is appropriate for the scalp, etc., providing a comfortable feel for stylists, etc., and the shape of the connecting portion 20 after the brush pieces are connected to each other is less likely to deform, preventing unintentional separation.

[0026] (1-1a) Connection part: The connecting portion 20 enables the brush pieces 11, 12 to be attached and detached from each other. This connecting portion 20 has at least one set of protrusions 31. The protrusions 21 constituting this set of protrusions 31 are arranged offset in the thickness direction L1 of the base 15 and also offset in a direction L2 intersecting the thickness direction L1 of the base 15. By having such a connecting portion 20, for example, the brush pieces 11, 12 can be separated during use and can be returned to a single brush 100 after use. The sets of protrusions 31 of the brush pieces 11, 12 fit complementarily with each other, so that the brush pieces 11, 12 are connected to form a single brush.

[0027] Each set of protrusions 31 is made up of two convex portions 21 (see FIG. 5), and each of the convex portions 21 extends laterally from the base 15.

[0028] A set of protrusions 31 can be formed in multiple sets (two or more sets), preferably two to four sets. In this way, the pair of brush pieces 11, 12 can be more reliably connected. The brush 100 shown in Figs. 1 to 3 shows an example in which a set of protrusions 31 is formed in multiple sets (two sets). The protrusions 21 in the connecting portion 20 are formed in an alternating pattern overall.

[0029] Each set of convex portions 31 is arranged as described above with respect to the convex portions 21 that constitute it. While there are no particular limitations as long as the above configuration is adopted, as shown in Figures 1 to 3, the convex portions 21 can be arranged offset from one another in the thickness direction L1 of the base 15 so as not to overlap, and further, can be arranged offset from one another in the direction L2 intersecting the thickness direction L1 of the base 15 so as not to overlap. However, they may also be arranged in a manner where they partially overlap one another.

[0030] When the brush pieces 11, 12 of the brush 100 are connected, the convex portion 21 of one brush piece 11 and the convex portion 21 of the other brush piece 12 are arranged facing each other. That is, the sides of the convex portions 21 are in contact with each other. The convex portions 21 facing each other have a protrusion 23 formed on one convex portion 21 and a recess 25 formed on the other convex portion 21 that fits into the protrusion 23. With this configuration, the brush pieces 11, 12 are less likely to separate even if an external force or their own weight is applied to the brush 100 in the horizontal direction (the direction in which the brush pieces 11, 12 move apart). In other words, it is possible to prevent the brush pieces 11, 12 from separating at an unintended timing. Furthermore, when one of the brush pieces 11 of the brush 100 is stored by hanging it on a wall or the like, the other brush piece 12 may fall due to its own weight, but by adopting the above-described configuration, it is possible to prevent the brush pieces 11 and 12 from falling, as described above.

[0031] As shown in Figures 5 and 6, protrusion 23 has an upright wall 27 at its base, and recess 25 can have an inner wall 29 that contacts upright wall 27. By adopting such a configuration, upright wall 27 and inner wall 29 engage with each other, making it even more difficult for brush pieces 11, 12 to separate even if external force or its own weight is applied to brush 100 in the horizontal direction (the direction in which brush pieces 11, 12 move apart).

[0032] There is no particular limitation on the height of the standing wall 27, but it can be, for example, about 0.25 to 5 mm.

[0033] The protrusion 23 of the convex portion 21 can have a dome-shaped portion (spherical portion). By adopting such a configuration, when separating the brush pieces 11, 12, the brush pieces 11, 12 can be easily separated by moving them along this dome-shaped portion. In addition, when returning the brush pieces 11, 12 to one brush 100, the brush pieces 11, 12 can be easily returned to one brush 100 in the same manner.

[0034] There is no particular limitation on the height of the dome-shaped portion of the protrusion 23, but it can be, for example, about 1 to 5 mm.

[0035] If the protrusion 23 has a dome-shaped portion (spherical portion), the recess 25 can be shaped to fit into the dome-shaped portion, making it easier to separate and return the brush pieces 11 and 12 to their original positions.

[0036] (2) Brush manufacturing method: The brush of the present invention can be manufactured by any conventional method. Specifically, injection molding using a mold is one example. Because the pair of brush pieces 11 and 12 constituting the brush of the present invention are identical, only one mold is required, simplifying the manufacturing process.

[0037] Here, by configuring the connecting portion 20 of the brush pieces 11, 12 as described above, it becomes easy to remove the brush pieces from the mold.

[0038] (3) How to use the brush: The brush of the present invention can be used by stylists and others in hairdressing shops and salons to wash and massage the scalp of customers and others.

[0039] Conventionally, a single brush is held in one hand to cleanse and massage the scalp. The brush of the present invention can be separated into a pair of brush pieces (see FIG. 4). Therefore, a user such as a stylist can hold one brush piece in each hand and cleanse and massage the scalp from both sides of the customer's head simultaneously. Massaging the scalp from both sides of the head simultaneously in this way can improve the massage effect.

[0040] After the cleaning, massaging, or other treatment is completed, the brush pieces can be combined and stored as a single brush.

[0041] The brush of the present invention may be used by dividing it into the individual brush pieces as described above, but it may also be used as a single brush without dividing it. [Example]

[0042] The present invention will be specifically described below based on examples, but the present invention is not limited to these examples.

[0043] Example 1 Brushes as shown in Figures 1 to 3 were fabricated. Specifically, the following brush was fabricated. Specifically, the brush comprises a pair of identical brush pieces each having a base and multiple pins protruding from one surface of the base, and a connecting portion 20 that allows them to be detachably attached to each other. The connecting portion has two sets of protrusions, and the protrusions constituting each set are offset so as not to overlap with each other in the thickness direction of the base, and are also offset so as not to overlap with each other in a direction intersecting the thickness direction of the base. One of the opposing protrusions has a protrusion formed on one of the protrusions, and the other has a recessed portion that fits into the protrusion. The protrusion has an upright wall at its base, and the recessed portion has an inner wall that contacts the upright wall. The base and pins are made of synthetic resin with a durometer type A hardness of 50. The protrusions of the protrusions have dome-shaped portions.

[0044] Example 2 A brush was fabricated in the same manner as in Example 1, except that the base and pins were made of a synthetic resin with a durometer type A hardness of 70. Because this brush was too hard, the fluidity of the material was lost during manufacturing, making it difficult for the liquid material to reach the tip of the brush. In addition, the pins were too hard, which tended to irritate the scalp too strongly.

[0045] Example 3 A brush was produced in the same manner as in Example 1, except that the base and pin were made of a synthetic resin with a durometer type A hardness of 25. Because this brush was too soft, its shape was easily deformed after the brush pieces were connected, and as a result, the connection tended to come undone unintentionally.

[0046] The brushes of Examples 1 to 3 described above can be divided into two identical brush pieces. Therefore, each brush piece can be held in each hand and used simultaneously. Furthermore, each brush piece can be manufactured using the same mold, which simplifies the manufacturing process.

[0047] In particular, the brush of Example 1 can be manufactured more easily and has a suitable hardness for the scalp.Furthermore, it is difficult for the brush to come undone unintentionally. [Industrial Applicability]

[0048] The brush of the present invention can be used as a scalp brush, etc. [Explanation of symbols]

[0049] 11, 12: brush pieces, 15: base, 17: pin, 19: one surface of the base, 20: connecting portion, 21: convex portion, 23: protrusion portion, 25: recess portion, 27: upright wall, 29: inner wall, 31: set of convex portions, 100: brush, L1: thickness direction of the base, L2: direction intersecting the thickness direction of the base.

Claims

1. A brush comprising a pair of brush pieces each having a base and a plurality of pins protruding from one surface of the base, The pair of brush pieces are identical; Each of the brush pieces has a connecting portion that allows them to be attached and detached to each other, The connecting portion has at least one pair of protrusions, A brush in which each of the convex portions constituting the set of convex portions is arranged to be offset in the thickness direction of the base and also offset in a direction intersecting the thickness direction of the base.

2. The convex portion of one of the brush pieces and the convex portion of the other of the brush pieces are arranged to face each other, 2. The brush according to claim 1, wherein one of the opposing convex portions has a protrusion formed thereon and the other has a recess formed thereon that fits with the protrusion.

3. 3. The brush according to claim 2, wherein the protrusion has an upright wall at its base, and the recess has an inner wall that contacts the upright wall.

4. The brush according to any one of claims 1 to 3, wherein the connecting portion has two or more sets of the protrusions.

5. 4. The brush according to claim 1, wherein the base is made of a synthetic resin having a durometer type A hardness of 30 to 68.

6. 4. The brush according to claim 2, wherein the protrusions of the convex portion have dome-shaped portions.

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