JP2017189465A - Brush and method of manufacturing brush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a brush for which bristles can be stably implanted on a support medium.SOLUTION: The brush includes: bristles; and a support medium 10 with insertion holes 14 which are for inserting bristles and which are noncircular in plane view. The support medium 10 is structured to have projection parts 102 which protrude from an inner wall surface 101 that forms the insertion holes 14. Bristles folded in two are inserted into the insertion holes 14 using a needle and, when the needle is pulled out, the projection parts 102 are brought into contact with the bristles.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a brush and a method for manufacturing the brush.

  Conventionally, toothbrushes and tongue coating removers in which loop hairs (loop-like hairs) are implanted in a support are known (see, for example, Patent Documents 1 and 2). By adopting a structure in which loop hairs are implanted in the support, it is possible to provide a toothbrush that can efficiently brush teeth and that does not damage or hurt the gums (see Patent Document 1). In addition, by adopting a structure in which loop hairs are planted on the support, it is possible to provide a tongue coating remover that can be used in a sanitary manner, and is less likely to reflect vomiting and can efficiently remove tongue coating without damaging the tongue. (See Patent Document 2).

JP 2004-558 A Japanese Patent Laid-Open No. 11-11934

  By the way, in the toothbrush and tongue coating remover provided with the conventional loop hair, the loop hair has its end (base) inserted into a recess formed in the support and fixed, or on the surface to which the loop hair is attached. It is configured to be welded and fixed to the support. In such a configuration, handling of the loop hair is poor, and it is considered that the operation of implanting the loop hair on the support is not always easy. In particular, when trying to manufacture a brush having a low loop bristle height (height from the support surface to the top of the loop bristle), it is considered that the operation is not easy.

  Further, as a method of manufacturing a toothbrush or tongue coating remover provided with loop bristles, it is conceivable to introduce an in-mold type in which a loop-like hair bundle having welded ends is arranged in a mold to form a support. However, when such a manufacturing method is introduced, there is a concern that the cost for capital investment increases.

  The present applicant has developed a new method for manufacturing a brush in view of the above-described problems. Regarding this, a patent application (Japanese Patent Application No. 2015-106536) has already been filed. In this new brush manufacturing method, in order to improve the working efficiency, a technique for stably planting brush hairs on a support has been desired.

  In view of the above points, an object of the present invention is to provide a brush capable of stably implanting brush hairs on a support and a method for manufacturing the brush.

  In order to achieve the above object, the brush of the present invention is a brush comprising brush bristles and a support provided with an insertion hole for inserting the bristles, wherein the support forms the insertion hole. It is the structure (1st structure) which has the projection part which protrudes from an inner wall surface.

  According to this configuration, for example, when a brush hair folded in half using a needle is inserted into the insertion hole, and then the needle is pulled out, the protrusion is brought into contact with the brush hair and the brush hair is caught by the needle and moved. This can be suppressed. For this reason, according to this structure, the positional accuracy of the brush hair inserted in an insertion hole can be improved.

  In the brush having the first configuration, it is preferable that the protrusion is provided at a position away from an end of the insertion hole (second configuration). According to this configuration, for example, when the brush is manufactured, it is possible to prevent a situation in which a part of the protruding portion is bent and protrudes outside the insertion hole.

  In the brush having the first or second configuration, a configuration (third configuration) in which the protruding portion has a tapered shape toward the tip side of the projection may be employed. According to this structure, elasticity can be given to the front end side of a projection part.

  In the brush having any one of the first to third configurations, the insertion hole is preferably non-circular in a plan view (fourth configuration). According to this structure, before the bristle is fixed to the support body, it is possible to suppress rotation of the bristle inserted into the insertion hole. For this reason, the direction of the bristle planted in the multiple places of a support body can be arranged stably.

  In the brush having the fourth configuration, it is preferable that the insertion hole has a rotationally symmetric shape in a plan view (fifth configuration). According to this structure, the insertion hole provided in a support body can be made into a simple shape, and manufacture of a support body becomes easy.

  In the brush having any one of the first to fifth configurations, the bristle protrudes in a loop shape from the first surface of the support, and is a back surface of the first surface of the support. It may be a configuration (sixth configuration) that is fixed on the second surface. According to this structure, the brush used suitably for brushing a tongue can be manufactured.

  In order to achieve the above object, the method of manufacturing a brush according to the present invention includes a first step of forming a support body provided with a through hole and a protrusion protruding from an inner wall surface forming the through hole, A second step of inserting a bristle in a curved state from one end side of the through hole into the through hole using a needle and projecting the loop hair from the other end side of the through hole; and And a third step of extracting from (a seventh configuration).

  According to this configuration, when the needle inserted into the through hole together with the brush bristles is pulled out from the through hole, it is possible to prevent the brush bristles from being caught by the needle bristles and moving. For this reason, according to this structure, the positional accuracy of the brush hair inserted in a through-hole can be improved.

  The manufacturing method of the brush having the seventh configuration further includes a fourth step of fixing the brush hair to the support after the needle is pulled out from the through hole, and the through hole is non-circular. (Eighth configuration) is preferable. According to this structure, before the bristle is fixed to the support body, it is possible to suppress rotation of the bristle inserted into the insertion hole. For this reason, the direction of the bristle planted in the multiple places of a support body can be arranged stably.

  ADVANTAGE OF THE INVENTION According to this invention, the brush which can plant a bristle stably to a support body, and the manufacturing method of a brush can be provided.

The schematic plan view which shows the structure of the brush which concerns on embodiment of this invention. Schematic side view when the brush is viewed along the direction of arrow A in FIG. Schematic cross-sectional view at the BB position in FIG. The schematic plan view which expanded and showed the insertion hole provided in the head part with which the brush concerning the embodiment of the present invention is provided, and its circumference Schematic cross-sectional view at the CC position in FIG. The schematic diagram for demonstrating the manufacturing method of the tongue brush which concerns on embodiment of this invention.

  Hereinafter, a brush and a brush manufacturing method according to an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a schematic plan view showing a configuration of a brush 1 according to an embodiment of the present invention. The brush 1 of this embodiment is a tongue brush that polishes the tongue. As shown in FIG. 1, the tongue brush 1 includes an elongated handle portion 11 that is gripped by a user's hand, and a wide head portion 12 provided on one end side in the longitudinal direction (vertical direction in FIG. 1) of the handle portion 11. The support body 10 which has is provided. The support 10 provided in a substantially T shape in plan view is not particularly limited. For example, a synthetic resin such as polypropylene, acrylonitrile-styrene resin (AS resin), saturated polyester resin, or wood is used. Can be formed. Note that the shape of the support 10 shown in FIG. 1 is merely an example, and the shape of the support 10 may be appropriately changed. In the present embodiment, the handle portion 11 and the head portion 12 are the same member, but they may be separate members.

  As shown in FIG. 1, the head unit 12 is provided with a plurality of cleaning units 13. In the present embodiment, there are two cleaning unit rows in which a plurality of cleaning units 13 are arranged in a direction parallel to the longitudinal direction of the head unit 12 (left and right direction in FIG. 1). Only. The number of cleaning unit rows and the number of cleaning units 13 arranged in each cleaning unit row may be appropriately changed.

  Each cleaning unit 13 is configured using a plurality of brush hairs (hair bundles). The brush hair is not particularly limited, but may be composed of synthetic resin such as nylon, polyester, polyimide, polyolefin, polybutylene terephthalate, or natural hair such as pig hair. In addition, although each cleaning part 13 may be comprised with one brush hair, it is preferable to comprise with multiple brush hair like this embodiment.

  FIG. 2 is a schematic side view when the brush 1 is viewed along the direction of arrow A in FIG. As shown in FIG. 2, each cleaning unit 13 includes a protruding portion 13 a that protrudes in a loop shape from the first surface 12 a of the head portion 12. In the present embodiment, the plurality of cleaning portions 13 are arranged such that the directions of the projecting portions 13a provided in a loop shape face substantially the same direction. Further, in the present embodiment, the plurality of cleaning portions 13 are formed such that the height of the protruding portion 13a (the length from the first surface 12a of the head portion 12 to the top of the protruding portion 13a) is substantially the same. This is just an example. For example, it is good also as a structure etc. from which the height of the protrusion part 13a differs between cleaning part rows | lines.

  FIG. 3 is a schematic cross-sectional view at the BB position in FIG. 1. As shown in FIG. 3, each cleaning portion 13 includes a fixing portion 13 b that is fixed to the second surface 12 b (the back surface of the first surface 12 a) of the head portion 12. In the present embodiment, the second surface 12b includes a recess 12c. The fixing portion 13b of each cleaning portion 13 is located in the recess 12c.

  As shown in FIG. 3, the tongue brush 1 includes a cover member 15. In the present embodiment, the cover member 15 is provided in a bottomed box shape. The cover member 15 is fixed to the head portion 12 by being fitted into the recess 12c. Note that the cover member 15 may be bonded to the head portion 12 using, for example, an adhesive. The cover member 15 may be screwed to the head portion 12. In a state where the cover member 15 is attached to the head portion 12, it is preferable that the outer surface of the cover member 15 and the second surface 12b are substantially flush with each other. By attaching the cover member 15 to the head portion 12, the appearance of the tongue brush 1 can be improved. However, the tongue brush 1 may not include the concave portion 12 c and the cover member 15.

  As shown in FIG. 3, the head portion 12 is provided with an insertion hole 14 for inserting a brush hair. The insertion hole 14 extends in a direction orthogonal to the first and second surfaces 12 a and 12 b of the head portion 12. In the present embodiment, the head portion 12 is provided with a plurality of insertion holes 14. A plurality of brush hairs (hair bundles) are inserted into each insertion hole 14, thereby forming the above-described cleaning portion 13.

  FIG. 4 is an enlarged schematic plan view showing the insertion hole 14 provided in the head unit 12 provided in the brush 1 according to the embodiment of the present invention and the periphery thereof. FIG. 5 is a schematic sectional view taken along the line CC in FIG.

  As shown in FIG. 4, the insertion hole 14 is non-circular in plan view. More specifically, the insertion hole 14 has a substantially stadium shape in plan view. However, this is merely an example, and the insertion hole 14 may have another non-circular shape. The insertion hole 14 may have a shape having a portion where the distance R from the center O of the hole 14 to the outer periphery changes in a plan view. For example, the insertion hole 14 may have a non-circular rotational symmetry shape in plan view. The insertion hole 14 may be, for example, a rectangle, a polygon other than a rectangle, an ellipse, or the like in plan view. The insertion hole 14 may be circular depending on circumstances.

  As shown in FIGS. 4 and 5, the support 10 has a protrusion 102 that protrudes from the inner wall surface 101 that forms the insertion hole 14. Specifically, the protrusion 102 is provided on the head portion 12. In the present embodiment, the protruding portion 102 is the same member as the head portion 12 and is provided integrally with the head portion 12. In this embodiment, the head part 12 and the protrusion part 102 are resin. However, the protruding portion 102 may be a separate member from the head portion 12.

  In the present embodiment, the protrusion 102 is annular in plan view. That is, the protrusion 102 is continuously provided in the circumferential direction of the inner wall surface 101. However, this is merely an example, and the protrusion 102 may be provided intermittently in the circumferential direction. In addition, the protrusion 102 may be provided at any position in the direction in which the insertion hole 14 extends, but is preferably provided at a position away from the end of the insertion hole 14. The direction in which the insertion hole 14 extends is a direction perpendicular to the paper surface in FIG. 4 and the vertical direction in FIG. Moreover, it is preferable that the protrusion part 102 is provided so that the front end side can be elastically deformed. In this embodiment, the protrusion 102 has a structure that tapers toward the distal end side, and the distal end side can be elastically deformed.

  The tongue brush 1 of the present embodiment is used in such a manner that the tongue 13 is polished by bringing the protruding portion 13a provided in a loop shape into contact with the tongue. Since the portion that contacts the tongue is composed of loop hairs, the possibility of damaging the tongue papillae and the like can be reduced and the tongue coating can be scraped off. Moreover, since the cleaning part 13 is formed with the brush hair, it is easy to dry and it is easy to keep the cleaning part 13 clean.

  Next, an example of the manufacturing method of the tongue brush 1 of this embodiment is demonstrated, referring FIG. FIG. 6 is a schematic diagram for explaining a method of manufacturing the tongue brush 1 according to the embodiment of the present invention. In FIG. 6, the manufacturing process proceeds in the order of (a), (b), (c), and (d).

  In manufacturing the tongue brush 1, first, the support body 10 including the head portion 12 is formed. The head portion 12 is formed with a through hole 14 and a protruding portion 102 that protrudes from the inner wall surface 101 that forms the through hole 14. The through hole 14 extends in a direction orthogonal to the first and second surfaces 12 a and 12 b of the head portion 12. The through hole 14 becomes the above-described insertion hole 14 in the finished product of the tongue brush 1. In the present embodiment, the through hole 14 has a stadium shape in plan view. The support 10 can be formed, for example, by injection molding of plastic pellets. In this case, the through hole 14 and the protrusion 102 can be formed simultaneously with the formation of the support 10. In this embodiment, since the non-circular through hole 14 has a rotationally symmetric shape in plan view, the mold for forming the support 10 can have a simple structure. The through hole 14 and the protrusion 102 may be formed after the support 14 is formed.

  Next, the support 10 is placed at a predetermined position on a work table (not shown) such that the first surface 12a of the head portion 12 is down and the second surface 12b is up. And as shown to Fig.6 (a), so that the hair | bristle bundle 20 curved into substantially U shape (folded in half) may be inserted in the predetermined through-hole 14 using the flocking needle 30, The position of the workbench is adjusted. In addition, although it is set as the structure which adjusts the position of a worktable here, the position of the flocking needle 30 may be adjusted.

  When the position adjustment of the work table is completed, the curved hair bundle 20 is inserted into the through hole 14 from one end (upper end) side of the through hole 14 using the flocking needle 30 as shown in FIG. . The flocking needle 30 is pushed in until the loop-like hair bundle 20 projects from the other end (lower end) side of the through hole 14. The loop-like hair bundle protruding from the first surface 12a becomes the above-described protruding portion 13a. The protruding portion 13a is composed of a plurality of loop hairs. The flocking needle 30 may have a stadium shape in a sectional view in accordance with the shape of the through hole 14, but is not limited thereto, and may be, for example, a circle in a sectional view. In the present embodiment, when the flocking needle 30 is inserted into the through hole 14, at least a part of the protrusion 102 is pressed, and the protrusion 102 bends with its tip side downward. In the present embodiment, the protrusion 102 is provided at a position away from the end of the through hole 14. For this reason, the situation where the bent protrusion 102 protrudes out of the through hole 14 does not occur.

  The work table on which the support 10 is placed is formed with a recess (or a through hole) so that the loop-like hair bundle 20 can protrude from the other end side of the through hole 14. FIG. 6B shows that the flocking needle 30 is inserted into the through hole 14 until the loop-shaped hair bundle 20 protrudes from the other end (lower end) side of the through hole 14 and then returns to the original position. It shows a state in the middle. When the flocking needle 30 is pulled out from the through hole 14, at least a part of the hair bundle 20 is caught by the movement of the flocking needle 30 and tries to move. However, the protrusion 102 is in contact with at least a part of the hair bundle 20, and the hair bundle 20 is restrained from being caught by the flocking needle 30 and moving. For this reason, in this embodiment, even if it does not perform special height adjustment after inserting the hair | bristle bundle 20 in the through-hole 14, with respect to the several through-hole 14, the hair | bristle bundle 20 is arrange | positioned substantially substantially. Can be arranged.

  When the flocking needle 30 returns to the original position, as shown in FIG. 6C, the position of the work table on which the support body 10 is placed so that the curved hair bundle 20 is inserted into the next through hole 14. Is adjusted. Further, before or after this, or simultaneously with this, the hair bundle 20 to be inserted into the through hole 14 is filled in a predetermined position. Thereafter, the hair bundle 20 is inserted in the same procedure as described above. In addition, if the insertion depth of the flocking needle 30 is changed for every through-hole 14, the protrusion part 13a from which height differs will be obtained, but in this embodiment, in order to arrange the height of the some protrusion part 13a, the flocking needle 30 may be obtained. The insertion depth of each through hole 14 is the same.

  When the hair bundles 20 are inserted into all the through holes 14 provided in the head portion 12 according to the above procedure, next, as shown in FIG. 6 (d), each hair bundle 20 on the second surface 12b side. Is fixed to the head portion 12 by heat welding. When the protruding amount of the hair bundle 20 protruding from the second surface 12b is too large, the hair bundle 20 may be cut before welding. In the present embodiment, the through hole 14 is provided in a non-circular shape in plan view. For this reason, after inserting the hair | bristle bundle 20 in the through-hole 14, it can suppress that the hair | bristle bundle 20 rotates in the through-hole 14 before heat welding is performed. Therefore, in this embodiment, the direction of the some cleaning part 13 formed in the head part 12 can be arranged in the same direction.

  In the present embodiment, heat welding is used, but the present invention is not limited to this. For example, another technique such as high-frequency welding, ultrasonic welding, or laser welding may be employed. Moreover, the hair | bristle bundle 20 should just be fixed by the 2nd surface 12b of the head part 12, and the hair | bristle bundle 20 may be fixed using fasteners, such as a metal fitting, depending on the case.

  As described above, the tongue brush 1 in which a plurality of the cleaning portions 13 having the protruding portions 13a (loop hair bundles) are formed on the first surface 12a of the head portion 12 is manufactured. According to the manufacturing method, it is possible to manufacture the tongue brush 1 with a small capital investment by using conventional equipment for obtaining a toothbrush by driving a hair bundle into a flock hole (groove) together with a flat wire. Moreover, according to the said manufacturing method, handling of the hair | bristle bundle at the time of forming loop hair on the support body 10 is easy, and manufacture of the brush provided with loop hair becomes easy. In addition, the brush hair can be stably implanted on the support 10 by devising the shapes of the protrusions 102 and the through holes 14.

  The embodiment described above is merely an example of the present invention. The configuration of the embodiment described above may be changed as appropriate without departing from the technical idea of the present invention.

  In the embodiment described above, the curved hair bundle 20 is inserted into each through hole 14 in order, but this is only an example. In some cases, the step of inserting the curved hair bundle 20 into the through hole 14 may be performed simultaneously with the plurality of through holes 14.

  Moreover, in the above, although the case where this invention was applied to a tongue brush was shown, it is not the meaning limited to this. The present invention may be applied to, for example, a general toothbrush having brush bristles protruding substantially linearly from one surface of the support 10. In the manufacturing method of the toothbrush or the like in this case, the bristles that are curved from one side of the through hole 14 are inserted, and the loop bristles are projected from the other side of the through hole 14. It is preferable that there are a plurality of brush bristles (which are bundled with hair). Then, the bristle is welded to the support 10 at the other end side of the through hole 14 from which the loop-like bristle protrudes. That is, the bristle is fixed to the other surface of the support 10 by melting the loop part of the bristle. In the manufacturing method, the shape of the through hole 14 is not particularly limited, and may be circular or non-circular in plan view. In addition, the support 10 preferably includes the protrusion 102, but may be configured without the protrusion 102 in some cases. Since the bristle can be fixed to the support 10 without using a flat wire, the cost required for manufacturing the brush can be reduced.

  In addition, the present invention is suitable for a mouth cleaning tool such as a tongue brush or a toothbrush, but the application target is not limited to the mouth cleaning tool, but for brushes for other purposes (for example, a brush for painting). Is also widely applicable.

DESCRIPTION OF SYMBOLS 1 Tongue brush 10 Support body 12a 1st surface 12b 2nd surface 13a Protrusion part (plurality of loop hair)
14 Insertion hole or through hole 15 Cover member 20 Hair bundle (bunch of brush hair)
30 Flocking needle 101 Inner wall surface 102 Projection

Claims (8)

Brush hair,
A support provided with an insertion hole for inserting the brush bristles;
A brush comprising
The said support body is a brush which has a projection part which protrudes from the inner wall face which forms the said insertion hole.   The brush according to claim 1, wherein the protrusion is provided at a position away from an end of the insertion hole.   The brush according to claim 1, wherein the protrusion has a tapered shape toward a tip side of the protrusion.   The brush according to any one of claims 1 to 3, wherein the insertion hole is non-circular in plan view.   The brush according to claim 4, wherein the insertion hole has a rotationally symmetric shape in plan view.   The brush hair protrudes in a loop from the first surface of the support, and is fixed on a second surface that is the back surface of the first surface of the support. The brush according to any one of the above. A first step of forming a support body provided with a through hole and a protrusion protruding from an inner wall surface forming the through hole;
A second step of inserting the bristle in a curved state from one end side of the through hole using a needle into the through hole and projecting the loop bristle from the other end side of the through hole;
A third step of withdrawing the needle from the through hole;
A method of manufacturing a brush comprising: A fourth step of fixing the bristles to the support after the needle is pulled out of the through hole;
The brush manufacturing method according to claim 7, wherein the through hole is non-circular.

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