JPH0631940Y2 - toothbrush - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a toothbrush provided with a brush for removing plaque and a massage part for gum massage.

[Conventional technology]

Conventionally, various toothbrushes have been proposed in which a brush for removing plaque is implanted in a head-implanted portion of a synthetic resin brush handle, and a rubber piece is fixed to the head to form a massage portion.

[Problems to be solved by the device]

However, in the above-mentioned conventional toothbrush, since the rubber pieces are bonded to the flocked portion with an adhesive,
There is a problem that the rubber piece is easily peeled off by using and is not suitable for long-term use.

An object of the present invention is to provide a massage and toothbrush that solves the above problems at low cost.

[Means for Solving the Problems]

The present invention relates to a toothbrush provided with a toothbrush part in which a brush is implanted in the head of a brush handle and a massage part provided with a brush of rubber-like resin. A toothbrush characterized in that a brush and a brush are integrally formed, and the brush handle, the head portion and the massage portion are formed by two-color molding using different resins.

[Action]

In this toothbrush, since the massage part is integrally fixed to the head by fusion bonding by two-color molding, the adhesive strength is significantly improved compared to the conventional toothbrush adhered by an adhesive, and the adhesive strength is stably maintained for a long period of time. As well as eliminating the problem of the massage part peeling from the head, adhesive,
Since the coating process is omitted, the manufacturing process is simplified,
It can be manufactured at a lower cost. Further, since at least both side surfaces and the lower surface of the head are covered with the rubber-like resin, the head can be softly touched in the mouth and a good feeling of use is obtained.

In particular, by covering the upper surface of the head, which is the flocked surface, with a rubber-like resin, this toothbrush can also cover cracks and the like that may occur on the flocked surface of the head, thus obtaining high commercial value, and It also becomes possible to effectively prevent the brush from coming off.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS. 1 to 3, in which a head 2 is integrally formed at the tip of a handle 1.
In this head 2, a plurality of rows of brushes 3 are planted at the center in the width direction of the upper surface, and a massage section 4 is provided. Although not explicitly shown in the drawing, the brush 3 is transplanted into the hair-implanted hole formed on the upper surface of the head 2 across the hair-implanted hole of the massage section 4. Reference numeral 5 is a locking hole.

Massage unit 4, the entire peripheral surface of the head 2, i.e., the coating unit 4 ₄ covering the upper surface of the head 2, both side surfaces, the bottom surface and front end surface
When, (molded simultaneously by injection molding the covering portion 4 ₄ and brush 4 ₂₎ of the coating unit 4 ₄ consists 4 ₂ Metropolitan plurality of brush of columnar shape formed integrally on. Covering portion 4 ₄ is flocked holes formed in the upper surface portion of the head 2, is brush 3 penetrating the flocking holes. Brush 4 ₂ is positioned in the head width direction on both sides of the brush 3.

Incidentally, the brush 4 ₂ can also be configured from Hoso杆or tongue-shaped member or a block-like member.

The material of the handle 1 and the head 2 is ABS resin, AS
The brush 3 is appropriately selected from synthetic resin materials such as resin, polypropylene resin, polyester resin, polycarbonate resin, and acrylic resin. The brush 3 is made of synthetic fiber such as nylon or animal fiber, and the massage portion 4 is made of propylene. And an elastomer such as a copolymer of butadiene and a copolymer of styrene and butadiene, or a material such as silicone rubber.

In this toothbrush, the handle 1 (including the head 2) and the massage part 4 are molded by two-color molding of different resins (integral molding using a primary resin and a secondary resin), and at the time of molding, After the massaging part 4 and the massaging part 4 are fused to each other, the brush 3 is placed on the upper surface of the head 2.
Those made by implanted from above the covering portion 4 _4. Specifically, injection molding is suitable, and in the case of manufacturing by injection molding, the handle 1 is injection-molded in advance, this is inserted and held in a predetermined mold, and the material of the massage part 4 is injected and solidified, After that, a brush 3 is planted by striking a metal piece, that is, a so-called flat wire, across the massage portion 4 and the head 2, and the locking hole 5 is formed.

As a combination of the material of the handle 1 and the material of the massage portion 4, a material that is suitable for two-color injection molding, that the fusion proceeds properly, and that has a high adhesive strength due to the fusion is selected. .

[Effect of device]

The toothbrush of the present invention has the massaging part fused and strongly bonded to the head by the two-color molding of different kinds of resin, so that the massaging part does not have to be peeled off from the head and is durable for a long time. In addition to being rich, it can be manufactured inexpensively by a simple process, and because the massage part has a covering part that covers at least both side surfaces and the lower surface of the head, it feels soft in the mouth and gives a good feeling of use. It brings about the effect of being given.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of the present invention, and FIG. 2 is A of FIG.
FIG. 3 is a sectional view taken along the line A-A of FIG. 1, and FIG. 3 is a sectional view taken along the line B-B of FIG. 1 ...... handle, 2 ...... head, 3 ...... brush, 4 ...... massage unit, _{4 2} ...... brush, _{4 4} ...... covering portion.

Claims (1)

[Scope of utility model registration request] 1. A toothbrush provided with a toothbrush part in which a brush is planted on a head of a brush handle and a massage part provided with a brush of a rubber-like resin, wherein the massaging part is covered with the head and the rubber-like resin. The toothbrush is characterized in that the brush and the head part and the massage part are formed by two-color molding using different kinds of resins.