JPH0570331U - toothbrush - Google Patents

Abstract

(57) [Summary] [Purpose] When the brush is damaged by use, discard the least amount. [Structure] A handle portion (1) having a recess (6) at a tip (2) and a brush portion (4) which is replaceably fitted in the recess (6). It is preferable to provide a connecting means so that the handle portion (1) and the brush portion (4) are not easily separated during use. The coupling means can be, for example, a slight cutout (10) on one side and a slight bulge (14) fitted on this cutout on the other side. It is also preferable to provide a separating means for separating the two when the brush part (4) is replaced. The separating means can be, for example, a through hole (8) provided in the depression of the handle and a protrusion (16) of the brush portion that fits into the through hole.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a toothbrush, and more particularly to a toothbrush whose tip brush portion is replaceable.

[0002]

[Prior Art]

 An ordinary toothbrush is composed of a brush at the tip and a long handle that serves as a handle. If the brush part is damaged due to use, the entire part is discarded even if the handle part is not damaged (usually it is not damaged at all). Although toothbrushes are small and light, they are used by all the people every day, so if they are discarded from all over Japan, the total amount will be enormous. According to a simple calculation, the average weight of each toothbrush is about 10 g, and it is said that the annual consumption of nationwide is 300 million, so the total annual waste amount is 3000 tons. The handle is usually made of synthetic resin, and if it is incinerated without being recycled, it will shorten the life of the incinerator, destroy the environment, and contribute to the depletion of petroleum resources.

In recent years, electric toothbrushes of the type in which only the tip of the brush is replaced and the handle rotation mechanism is used for a long time have begun to spread. However, at present, the number of toothbrushes that can be brushed by hand is still overwhelming. Furthermore, since the tip of the electric toothbrush to be discarded is still relatively large, it cannot be said that the above problems caused by the toothbrush disposal have been sufficiently solved.

[0004]

[Problems to be solved by the device]

 The present invention aims to provide a toothbrush with a minimum number of brush tips to be discarded.

[0005]

[Means for Solving the Problems]

 The toothbrush of the present invention is characterized in that it has a handle portion having a recess at the tip and a brush portion that is replaceably fitted in this recess.

It is preferable to provide a connecting means so that the handle portion and the brush portion do not easily come off during use. The coupling means can be, for example, a slight notch provided on one side and a slight bulge that fits into this notch provided on the other side. In addition, various forms can be considered for the coupling means.

It is preferable to provide a separating means for separating the two when the brush part is replaced. The separating means can be, for example, a through hole provided in the depression of the handle and a protrusion of the brush portion that fits into the through hole. In addition, various forms of separation means could be considered.

[0008]

[Action]

 Since the toothbrush of the present invention comprises a handle portion having a recess at the tip and a brush portion which is replaceably fitted in this recess, only this portion can be replaced if the brush portion is damaged.

[0009]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. This embodiment relates to a hand brush type toothbrush, but it can be applied to an electric toothbrush as well.

As is apparent from FIG. 1, the toothbrush according to the present invention is characterized in that the tip 1 of the handle 1 has a recess 4, and only the brush portion 6 is replaceably mounted in the recess.

The depression 6 at the tip 2 of the handle has a substantially elliptical shape, and as shown in FIGS. 1 and 2A, a through hole 8 is provided at one place in the bottom. As shown in FIG. 3 (b), there is a slight cut 10 in the wall of the depression.

As shown in FIGS. 2 (b) and 3 (a), the removable brush portion 4 includes a large number of closely-attached hair-like bodies 12 and a synthetic resin supporting them. The base 14 of the. A cylindrical projection 16 is formed at one location from the base 14 on the side opposite to the hairy body 12, and the projection 16 is inserted into the through hole 8 at the bottom of the recess 6 during use. In addition, a slight bulge 18 is formed on the side portion of the base portion, and this bulge 18 fits into the notch 10 in the wall of the recess during use.

In order to use the toothbrush of the present invention, the brush portion 4 is pushed into the tip recess 6 of the handle with a finger so as to be integrated. If the brush part 4 is damaged, replace only the brush part with a new one and use the handle for a long time. To replace the brush part 4, push the protrusion 16 of the old brush exposed on the back side of the handle with the protrusion 16 of the new brush part to fit the brush base 14 and the recess 6, as shown in FIG. You just have to cancel the match.

[0014]

[Effect of the device]

 According to the present invention, when the brush portion is damaged, only the minimum brush portion is discarded. About 1.5 g of a toothbrush of about 10 g is discarded. Based on the above-mentioned simple calculation, if 300 million brush parts are discarded annually, the amount of waste will be about 450 tons, which is 2550 tons compared to the case where the whole is discarded.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a toothbrush of the present invention.

FIG. 2A is a plan view of the tip of the handle excluding the brush portion. (B) is a side view of the brush part.

FIG. 3A is a front view of a brush portion. (B) is a tip cross-sectional view of the handle excluding the brush portion.

FIG. 4 is a perspective view showing a state in which a brush part is being replaced.

[Explanation of symbols]

 2 Tip of handle 4 Brush part 6 Dimple 8 Through hole 10 Notch 14 Bulge 16 Protrusion

Claims (5)

[Scope of utility model registration request] 1. A toothbrush comprising a handle portion (1) having a recess (6) at a tip (2) thereof, and a brush portion (4) which is replaceably fitted in the recess (6). 2. A handle portion (1) and a brush portion (4) when used.
2. A coupling means is provided so that the coupling does not easily come off.
The toothbrush described in. 3. The toothbrush according to claim 2, wherein the coupling means is a slight notch (10) provided on one side and a slight bulge (18) fitted on the notch provided on the other side. 4. The toothbrush according to claim 1, further comprising a separating means for separating the brush portion (4) from each other when the brush portion (4) is replaced. 5. A separating means has a through hole (8) provided in a depression of a handle and a protrusion (1) of a brush portion fitted in the through hole.
6) The toothbrush according to claim 4.