JP2598975Y2 - toothbrush - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toothbrush, and more particularly, to a toothbrush which improves cushioning of a portion where a brush is implanted on a surface where a brush is implanted and has improved usability.

[0002]

2. Description of the Related Art As a conventional toothbrush, for example, one described in Japanese Utility Model Publication No. 54-18372 is known. In this toothbrush, convex portions are formed at predetermined intervals in a flocking portion, and a brush is transplanted between the convex portions and the convex portions. This toothbrush can change the bristle strength even with brushes of the same thickness by making the lengths of the brushes different.

[0003]

However, in the above-described conventional toothbrush, the convex portion is formed integrally with the flocking portion, and the flocking portion and the convex portion are formed of a thermoplastic hard resin,
For example, it is composed of an AS resin (acrylotrile styrene copolymer). For this reason, the brush is planted with relatively large rigidity, and the brush planted on the convex portion is affected not only by the waist strength but also by the cushioning property, and the cushioning property is reduced and the feeling of use may be impaired. was there. The present invention has been made in view of the above-described problem, and has as its object to provide a toothbrush that is excellent in cushioning properties of a brush and that provides a good feeling of use.

[0004]

Means for Solving the Problems To achieve the above object, the present invention provides a toothbrush in which brushes are bundled and planted on a flocking surface of a brush handle made of thermoplastic hard resin.
A convex portion made of an elastomer resin was provided on the flocked surface, and the bunch of the brush was transplanted on the convex portion.

[0005] The toothbrush according to the present invention can be configured in such a manner that a bundle of brushes is welded to a convex portion, and that the convex portion is welded to a flocked surface.

[0006]

According to the toothbrush according to the present invention, a bunch of brushes is implanted on a convex portion made of a thermoplastic elastomer (TPE) resin, so that the brush can be provided with cushioning properties. Sensation is obtained. The toothbrush of the present invention can effectively prevent detachment by welding a bunch of brushes to the convex portion, and also eliminates the need for a welding agent or the like by welding the convex portion to the flocked surface, thereby simplifying the manufacturing process. In addition, the brush fluctuates in the flocking direction and also bends and deforms from the root in the horizontal direction, so that no extra force acts between the teeth, the cleaning effect on the concave portion of the tooth surface is improved, and the usability is good. Become. The elastomer resin has an intermediate hardness and elasticity between rubber and plastic.Specifically, an ester-based thermoplastic elastomer, an amide-based thermoplastic elastomer, a urethane-based thermoplastic elastomer, an orylene-based thermoplastic elastomer, or A styrene-based thermoplastic elastomer or the like is used.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a main part of a toothbrush according to an embodiment of the present invention.

In the figure, reference numeral 11 denotes a brush handle. The brush handle 11 is formed by injection molding of a thermoplastic hard resin such as AS resin, PET resin (polyethylene terephthalate), PP resin (polypropylene), or POM resin (polyoxymethylene). And the like. This brush handle can be made of a thermosetting resin.

The brush handle is provided with a flocked surface 12 over a predetermined length on one surface on the distal side, and a grip portion (not shown) provided on the proximal side. A flocking member 41 having a plurality of convex portions 13 formed on a plurality of rows on the flocking surface 12.
Are provided, and the brushes 31 are implanted in bundles (hereinafter referred to as hair bundles 31) on the convex portions 13 of the hair implantation member 41, respectively.

The flocking member 41 is formed by molding an elastomer resin having an intermediate hardness and elasticity between rubber and plastic, in this embodiment, a thermoplastic elastomer resin (TPE) by injection molding or the like. The brush is formed by insert injection molding. It is welded to the flocked surface 12 of the handle 11. The flocked member 41 can be bonded using an adhesive or the like, but since it is used in the oral cavity, the above-described welding by insert molding or the like is desirable from the viewpoint of establishing safety. Although various types of the above-mentioned TPE can be used, from the viewpoint of cost reduction, a styrene-based or olefin-based TPE is used.
PE is preferred.

The bristle bundle 31 is formed by the method described in Japanese Patent Application Laid-Open No. 60-241404 and the like.
Are heated and joined in a molten state, that is, welded.
The hair implantation of the hair bundle 31 may be performed by a normal hair implantation method using a metal plate. However, if the hair implantation portion (projection) 13 is soft, the hair bundle 31 may come off.
Is desirably implanted in a mold by injection molding of the projection 13 (see JP-A-61-268208 and JP-A-2-503150).

In the toothbrush of this embodiment, the bristle bundle 31 is implanted in the projection 13 of the implanted member 41 made of an elastomer resin. For this reason, in this toothbrush, the brush 31 can be bent and deformed from the root implanted in the convex portion 13 in accordance with the unevenness of the teeth and the like, the cushioning property of the brush 31 is improved, and a good usability is obtained. Can be

In this embodiment, the thickness of the brush 31 is
By selecting the length, shape, and the like, and selecting the elastic coefficient, the height, and the like of the projection 13, desired cushioning properties and flexibility can be obtained. Therefore, a toothbrush that is gentle on the gums and has a good feeling of use can be easily achieved.

FIG. 2 shows a toothbrush according to another embodiment of the present invention, and FIG. 2 is a front sectional view of a main part of the toothbrush. In this embodiment and the embodiments described later, the same portions as those in the above-described embodiment are denoted by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 1, in this embodiment, a convex portion 13 made of TPE is formed on a flocking surface 12 at a predetermined interval, and between the convex portions 13 and the convex portions 13 (for convenience, a concave portion is described. The hair bundle 31 is planted in the parentheses.

In this embodiment, the above-mentioned Japanese Utility Model No. 5
As described in Japanese Patent Application Laid-Open No. 4-18372, the length of the hair bundle 31 can be changed by implanting the hair bundle 31 in the convex portion 13 and the concave portion. Therefore, the hair stiffness can be set arbitrarily, and a better feeling in use can be obtained.

FIG. 3 shows a toothbrush according to another embodiment of the present invention. In this embodiment, the protrusions 13 are separately and independently formed from an elastomer resin, and these protrusions 13 are fixed to the flocked surface 12 respectively. Then, the brushes 31 are implanted into the convex portions 13 to improve the cushioning properties of the brushes 31.

Although the detailed description of the structure of the brush handle 11 is omitted in each of the above-described embodiments, the brush handle 11 has various structures, for example, a structure in which a head portion and a neck portion are integrated. Alternatively, one that fits the head and the neck can be used.

[0019]

As described above, according to the toothbrush according to the present invention, a convex portion made of an elastomer resin is formed on a flocking surface, and a brush is planted on the convex portion. Therefore, the cushioning property can be improved, a high cleaning effect can be obtained, and
The effect that the usability can be improved can be obtained.

In addition, the toothbrush of the present invention can prevent the brush from slipping out by welding the bundle of brushes to the projections, and can also reduce the manufacturing process by welding the projections to the flocked surface. The advantage is that the simplification can be achieved and higher security can be achieved.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a main part of a toothbrush according to an embodiment of the present invention.

FIG. 2 is a front sectional view of a main part of a toothbrush according to another embodiment of the present invention.

FIG. 3 is a front sectional view of a main part of a toothbrush according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Brush handle 12 Flocked surface 13 Convex part 31 Brush (hair bundle) 41 Flocked member

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A46B 1/00-17/08

Claims (1)

(57) [Scope of request for utility model registration] 1. A toothbrush in which brushes are bundled and planted on a flocking surface of a brush handle made of a thermoplastic hard resin, wherein a convex portion made of an elastomer resin is provided on the flocking surface, and the bundle of brushes is flocking on the convex portion. A toothbrush characterized by doing.