JP3120845U - Roll toothbrush - Google Patents

Abstract

To provide a brush body for a roller toothbrush capable of reducing the overlapping of brush group wires and having a low flocking density.
(A) A large number of strands 1 made of synthetic fiber filaments such as nylon are folded in two in a U shape and assembled into a bundle, and a central portion 2 where the strands are folded A group of brush wires 4 to which the winding lead wire 3 is fixed;
(B) a brush reel 8 in which grooves 7 into which the brush strands 4 are pushed into one or a plurality of rows are spirally formed on the reel body peripheral surface 6;
(C) In a state where the center portion 2 of the strand is fixed by the lead wire 3, the brush strand 4 is wound around the body of the brush reel 8 at a spiral pitch along the spiral groove 7. A roll toothbrush brush body in which a predetermined gap 9 is provided between adjacent grooves to form a roll.
[Selection] Figure 2

Description

  The present invention relates to a toothbrush that is a tooth cleaning tool for artificially removing deposits such as plaque (plaque) adhering to a tooth surface, and a method for flocking the toothbrush, and more particularly to bristles. ) In a roll shape.

Toothbrushes used to remove and control dirt in the mouth, especially plaque and tartar, which are attached to the tooth surface, are said to be the most important and general tool among the mouth-cleaning tools. (Refer nonpatent literature 1).
Toothbrushes are broadly classified into hand toothbrushes and electric toothbrushes, and hand toothbrushes are usually called “toothbrushes”. This toothbrush is made of a synthetic filament such as nylon bristles or a head planted with a brush made of natural bristles, a handle that is gripped by the hand, and a neck that connects the head and the handle. (Chunk). The head of the toothbrush has tuft holes in which a large number of brushes are implanted. Each brush is generally folded into two U-shapes, pushed into a hole, fixed with a flat wire, and implanted in a substantially vertical shape or radial shape (fan shape). The shape of the brush portion is roughly divided into three types: a straight type in which the brushing plan is parallel to the head, a concave bay type, and a convex bay type when the brush portion is viewed from the side. In addition, there are tuft type and inclined type. The flocked state of the brush is divided into a hair bundle having a gap between the hair bundles and a multi-hair bundle having the hair bundles not separated from each other. What is densely planted in a hairless bundle, four rows or many rows is called a multi-hair bundle.
The above-mentioned toothbrush grips the handle and applies a brush to the tooth surface, repeats the movement of the hair tip while applying light pressure, such as left, right, up, down, and rotation, to remove plaque and massage the gums Used to do. In addition, what uses a hair-blend bundle for the flocked part of a toothbrush can be kept clean because it drains well and is easy to dry. In addition, a dense hair type of a multi-hair bundle is said to be suitable for a brushing method using a hair tip for cleaning a gingival sulcus or the like as a method of using a toothbrush.

  Prior art document information relating to such various types of toothbrushes includes the following. In addition, unlike the above-mentioned popular type toothbrushes, in recent years, commonly called "rotating toothbrushes" or "roll toothbrushes", etc., which have a brush that can be rotated at the tip of the toothbrush handle, or the shape of the brush part Has been developed and attracts attention (for example, see Patent Documents 1 to 7).

Yuko Matsuda and Isa Kondo, "Toothbrush Encyclopedia" 3rd edition, Gakuken Shoin, October 2002 edition, Registered Design No. 1066543 Japanese Utility Model Publication No. 63-120929 Utility Model Registration No. 3104356 JP 2000-83736 A JP 2003-219911 A Japanese Patent Laid-Open No. 2003-220080 JP 2003-289947 A

In the toothbrushes of Patent Literatures 1, 2, and 4 to 7, a cylindrical brush portion is rotatably provided at the tip of the collar portion, but the manufacturing method is a group of a plurality of strands made of nylon or the like ( The brush is assembled in a tuft shape, and an annular weld portion is formed in which the central portion of the strand group is welded in a ring shape while the strand group is pushed open in the radial direction and fixed. After forming the sheet-like brush body for toothbrush in which the inner periphery of the welded portion is cut into a circular shape to form a circular insertion hole, and a large number of the sheet-like brush bodies are overlaid, an axial pipe is inserted into the insertion hole. The roll body is inserted into a roll shape, and this roll body is rotatably supported by a support shaft protruding from one end side of the handle member.
The toothbrush of Patent Document 3 is a roller-like one in which a plurality of substantially disc-shaped brush bodies are overlapped around the tip axis of the handle portion of the toothbrush, and the roller-like brush body is passed through the handle shaft. Thus, a toothbrush is configured.

As described above, the conventional roll toothbrush uses a brush body in which a plurality of sheet-like brushes or the like are overlapped, and then an axial pipe is inserted into the central insertion hole to form a roll. This roller-shaped brush body is configured to be rotatably supported by a support shaft protruding from one end of the handle, or a disc-shaped brush body at the tip of the handle portion of the toothbrush is perpendicular to the shaft. It was a direct attachment.
And when the flocked state of the above-mentioned roll toothbrush was seen, there were many things which were densely gathered without the space | interval of a hair | bristle bundle separating. The reason is considered to be a state in which the brushes are densely planted over the whole because a large number of sheet-like brush bodies are superposed in close contact due to the manufacturing method. Since the hair bundles are dense without being separated, it is difficult to apply a brushing method using a hair tip for cleaning a gingival sulcus or the like as a method of using a toothbrush. In addition, since the hair bundles are dense without being separated from each other, the water does not drain well and it is difficult to dry. Therefore, the washing of the plaque that has entered the hair is insufficient, and there is an unsanitary aspect. Further, it is not easy to adjust the arrangement interval of the hair bundles.

  In order to solve the problems of the conventional roll toothbrushes, the present invention is designed so that a spiral groove is formed on a reel, and a large number of brush elements are assembled in the spiral groove around a winding lead wire. The wire group is pushed in by spirally winding at a spiral pitch along the spiral groove, and the free end of the strand group is protruded above the reel, and at the same time, a gap with a predetermined width is provided between adjacent grooves to plant the hair. A roll toothbrush brush body is formed.

That is, the brush body for a roll toothbrush according to claim 1 of the present invention comprises the following combinations (A) to (C).
(A) A large number of strands 1 made of synthetic fiber filaments such as nylon are folded into two U-shapes and assembled into a bundle, and a common winding lead is formed in the central portion 2 where the strands are folded. Brush strands 4 to which the wires 3 are fixed,
(B) a brush reel 8 in which grooves 7 into which the brush strands 4 are pushed into one or a plurality of rows are spirally formed on the reel body peripheral surface 6;
(C) In a state where the center portion 2 of the strand is fixed by the lead wire 3, the brush strand 4 is wound around the body of the brush reel 8 at a spiral pitch along the spiral groove 7. A predetermined gap 9 is provided between adjacent grooves to form a roll.

The roll toothbrush according to claim 2 of the present invention comprises the following combinations (A) to (C).
(A) A large number of strands 1 made of synthetic filaments such as nylon are folded into two U-shapes and assembled into a bundle, and a common winding lead wire is formed at the center portion 2 where the strands are folded. Brush wire group 4 to which 3 is fixed,
(B) a brush reel 8 in which grooves 7 into which the brush strands 4 are pushed into one or a plurality of rows are spirally formed on the reel body peripheral surface 6;
(C) In a state where the center portion 2 of the strand is fixed by the lead wire 3, the brush strand 4 is wound around the body of the brush reel 8 at a spiral pitch along the spiral groove 7. A roll toothbrush brush body 10 having a roll shape by providing a gap 9 between adjacent grooves;
(D) A circular insertion hole 5 is formed at the center of the body portion of the roll-shaped brush body 10, and a support shaft 11 is inserted into the insertion hole 5, and the brush body 10 projects from one end side of the handle member 12. The support shaft is rotatably supported.

According to the present invention, the following effects can be obtained.
(A) It is possible to produce a brush body for a roller toothbrush that can reduce the overlapping of the brush strands and thus has a low flocking density.
(B) It is possible to adjust the arrangement interval of the hair bundle by pressing the brush strands into a spiral spiral groove of the brush reel at a predetermined spiral pitch.
(C) Since there is a hair bundle interval, water drains well and it is easy to dry, so it can be kept clean.
(D) The hair tip easily enters the tooth space and the removal of the plaque becomes easy.
(E) A roll toothbrush brush body can be produced without requiring a high degree of skill, and mass production of a roll toothbrush is also possible.

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view of a roll toothbrush 20 equipped with a roll-like brush body obtained by the present invention, and FIG. 2 is a plan view.
The illustrated handle portion 12 is formed thicker at one end side than the middle in the length direction, and a gripping portion indicated by reference numeral 13 is formed with a slip stopper. A roll-shaped brush body 10 is interposed between the support pieces 14 and 14 on both sides formed at the other end of the leopard pattern portion 12, and the brush body 10 is formed at the center of the body portion of the brush body 10 from the one support piece. A support shaft 11 having a head is inserted into the other support piece through the insertion hole 5. Thereafter, the roll-shaped brush body 10 is rotatably supported at one end in the length direction of the handle member 12 via the support shaft 11 by means such as crushing or welding the other end side of the support shaft 11.
Incidentally, the cover piece of FIG. 1 is integrally provided with a cover that partially covers the peripheral surface of the roll-shaped brush body 10, but the cover may not be provided. For example, as shown in FIGS. 3 to 4, it is possible to form a toothbrush in which the support piece 14 at the tip is simply bifurcated.
The toothbrush handle portion 12 of this toothbrush is molded using a synthetic resin that is not harmful to health and hygiene, and is molded by injection molding to a length of about 170 to 175 mm using, for example, polypropylene or polyester resin.

Next, the roll-shaped brush body will be described.
The roll-shaped brush body 10 of the present invention includes a brush element group 4, a brush reel 8, and a support shaft 11 that rotatably supports this at one end in the length direction of the handle member 12.

The brush strand 4 will be described. First, a large number of strands 1 made of a synthetic monofilament such as nylon are folded into two U-shapes and assembled into a bundle, and the center portion 2 of the strands is folded. In addition, the common winding lead wire 3 is fixed by welding or an adhesive to form a brush wire group 4 (see FIGS. 5 to 8).
Next, using the brush reel 8 in which the groove 7 into which the brush strand group 4 is pushed into one or a plurality of rows is spirally formed on the reel body peripheral surface 6, the brush strand is used. The group 4 is spirally formed at the spiral pitch along the trunk spiral groove 7 from one end of the lead wire 3 to the trunk spiral groove 7 of the brush reel 8 with the strand central portion 2 fixed by the lead wire 3. A roller toothbrush brush body 10 which is pressed by being wound and has a predetermined width between adjacent grooves 7 while allowing the free ends of the strands 4 to protrude upward from the reels and is formed into a roll shape. It forms (refer FIGS. 9-14).

  The reel 8 uses, for example, a synthetic resin such as polypropylene or polyester resin, like the above-described pattern member, and has a diameter of 10 mm, a reel width of about 20 mm, a depth of 2.5 mm, and a width of about 1 to 4 mm. As an example, molding is performed by injection mold molding.

  The strand 1 can use synthetic monofilaments, such as polyethylene, besides nylon mainly. The diameter is 0.13 to 0.30 mm and the length is about 15 mm. This is bent into a U shape around the lead wire 3 and assembled and fixed in a bundle shape to form a shape having an effective length of about 7.5 mm (see FIG. 8).

Further, in the process of forming a roll brush, the brush element group 4 is rotated while the brush reel 8 is rotated while the element wire center part 2 is fixed to the lead wire 3 by welding or adhesive. The body spiral groove 7 is spirally wound from one end of the lead wire 3 at a spiral pitch along the body spiral groove 7 (see FIGS. 11 to 12). Then, the free end of the strand group 4 is protruded above the reel, and at the same time, a gap (clearance 9) having a predetermined width is provided between the adjacent grooves 7 (FIG. 13) to form a roll-like brush body 10. It is.
Note that, after the strand group 4 is pushed into the spiral groove 7, the strand center portion 2 and the spiral groove 7 may be fixed with an adhesive or the like, if necessary.
The brush strands 4 are pushed into the illustrated spiral groove 7 one by one, but can be pushed into a plurality of rows 3-4.

  And the front-end | tip of the said strand group 4 protruded above the reel is rounded and aligned using a suitable hair-end processing machine. Thereafter, as described above, the brush body 10 is interposed between the support pieces 14 and 14 on both sides formed at the other end of the collar portion 12, and the brush body 10 is formed at the center of the body portion of the brush body 10 from one support piece. The support shaft 11 having a head is inserted into the other support piece through the inserted insertion hole 5. Thereafter, the rolled brush body 10 is rotatably supported at one end in the length direction of the handle member 12 via the support shaft 11 by means such as crushing or welding the other end side of the support shaft 11 (FIG. 14). ).

  The roll toothbrush completed through the above processes is packaged and shipped through an inspection process.

It is a side view of a roll toothbrush. It is a top view same as the above. It is a front view of the modification of a roll toothbrush. It is a side view same as the above. It is explanatory drawing of the lead wire for winding. It is explanatory drawing of the strand for brushes. It is the combination figure of the said strand and a lead wire. It is explanatory drawing of the strand for brushes. It is explanatory drawing of the reel for brushes. It is a longitudinal cross-sectional view of the brush reel. It is explanatory drawing of the process of winding the strand group for brushes around the spiral groove of the brush reel. It is explanatory drawing of the process in which the wire strand group for brushes is similarly wound around the spiral groove of a brush reel. It is a side view of a roll-shaped brush body. It is an enlarged view of the support part of a roll-shaped brush body.

Explanation of symbols

1 strand
2 Wire center 3 Winding lead wire 4 Brush wire group 5 Circular insertion hole 6 Reel body peripheral surface 7 Spiral groove 8 Brush reel 9 Clearance
DESCRIPTION OF SYMBOLS 10 Roll-shaped brush body 11 Support shaft 12 Leopard handle 13 Anti-slip 14 Support piece 20 Roll toothbrush

Claims (2)

A brush body for a roll toothbrush comprising a combination of the following (A) to (C).
(A) A large number of strands 1 made of synthetic fiber filaments such as nylon are folded into two U-shapes and assembled into a bundle, and a common winding lead is formed in the central portion 2 where the strands are folded. Brush strands 4 to which the wires 3 are fixed,
(B) a brush reel 8 in which grooves 7 into which the brush strands 4 are pushed into one or a plurality of rows are spirally formed on the reel body peripheral surface 6;
(C) With the central portion 2 of the strand 1 fixed by the lead wire 3, the brush strand 4 is spirally wound around the body of the brush reel 8 at a spiral pitch along the spiral groove 7. Thus, a predetermined gap 9 is provided between adjacent grooves to form a roll. A roll toothbrush comprising a combination of the following configurations (A) to (D).
(A) A large number of strands 1 made of synthetic filaments such as nylon are folded into two U-shapes and assembled into a bundle, and a common winding lead wire is formed at the center portion 2 where the strands are folded. Brush wire group 4 to which 3 is fixed,
(B) a brush reel 8 in which grooves 7 into which the brush strands 4 are pushed into one or a plurality of rows are spirally formed on the reel body peripheral surface 6;
(C) In a state where the central portion 2 of the strand 1 is fixed by the lead wire 3, the brush strand 4 is spirally wound around the trunk portion of the brush reel 8 at a spiral pitch along the spiral groove 7. A roll toothbrush brush body 10 in a roll shape by providing a gap 9 between adjacent grooves;
(D) A circular insertion hole 5 is formed at the center of the body portion of the roll-shaped brush body 10, and a support shaft 11 is inserted into the insertion hole 5, and the brush body 10 protrudes toward one end side of the collar member 12. The support shaft 11 is rotatably supported.

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