JP2000296022A - Tooth brush for decreasing pressing force - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the amplitude width of bristle tips, to reduce the wear of teeth and to reduce a damage in the gums by providing a tooth brush for decreasing pressing force with a function for relatively displacing a brush part with respect to a handle. SOLUTION: A brush B is made to be an insertiable structure by adopting the inner sides of the projecting parts 1 and 2 in the handle A of the tooth brush as a guide. In this case, fixtures 3 are constituted to fall in four directions until it becomes a plane when the brush B is inserted, they are perpendicularly erected after insertion and a structure for preventing coming-off is obtained with 4. Besides, when the brush B is removed, the fixtures 3 are pushed-down and pulled-out and the removed brush B is displaced by 180 deg. compared with the usage direction till that time till it is inserted again. Thus, the handle A of the tooth brush and the brush B are slid or rocked to decrease the pressure of the bristle tips with respect to the tooth land the gums, the amplitude width of the bristle tips is reduce and the wear of tooth and the damage to the gums are reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to health in the oral cavity and to resource saving and reduction of household waste. More specifically, the handle of the toothbrush and the brush portion are not fixed but slide or swing. And a structure in which the brush portion is detachable.

[0002]

2. Description of the Related Art Some electric toothbrushes have a function of reducing the pressing force, but have a problem that the cost is high and it is difficult to spread them in general. In addition, as a utility model or a patent application has been filed for a manual toothbrush, a device has been developed that can separate the brush portion from the handle portion of the toothbrush.
The idea is that the two are fixed and the pressing force is not weakened. (See, for example, Japanese Utility Model Laid-Open No. 5-70331.) A double-cushion toothbrush in which the brush portion is divided into two parts has been devised in order to polish the unevenness of the teeth well, but it has been commercialized because there is a problem in the cushioning property of reducing the pressing force. Absent. (See, for example, JP-A-7-75607)

[Problems to be solved by the invention]

[0003] In manual brushing, there is a problem that the pressing force of the brush tends to be strong against the teeth and the gums, and the amplitude width of the bristle tip becomes large, so that the teeth are worn and the gums are damaged.

Since the brush portion is a consumable item, the conventional toothbrush has a problem of wasting resources and increasing household waste since the brush portion is discarded at the same time as the brush portion is also undamaged. I was

[0005] In a general use situation, damage to the brush portion strongly pressed against the teeth, and an increase in cost, waste of resources, and home use due to shortening of the usable period due to opening of the brush tip in a certain direction. Had a problem of increasing waste in the country.

[0006] The present invention has been made in view of such problems, and an object thereof is to reduce the pressing force on teeth and gingiva, and the handle can be used repeatedly. It is another object of the present invention to provide a toothbrush that results in a brush part having increased durability.

[0007]

In order to achieve the above object,
The toothbrush for reducing the pressing force according to the present invention has a function of displacing the brush portion relatively to the handle.

[0008] For this purpose, the handle portion of the toothbrush and the brush portion that contacts the teeth are separate parts, and a guide is provided on a portion of the handle, and the brush portion is inserted into the guide so that the toothbrush can be moved in the longitudinal direction. On the other hand, the brush portion slides within a certain range on the side opposite to the artificial force.

For the same purpose, an elastic member is used at the base of the brush portion of the toothbrush so that the connecting portion with the handle can be moved, and the brush portion swings in a direction opposite to the direction of use of the toothbrush. Good.

In the toothbrush of the present invention, it is preferable that the brush portion is detachable from the handle so that the handle and the brush portion can be cleaned and the brush portion can be replaced.

[0011]

Embodiments of the present invention will be described with reference to the drawings. In the toothbrush including the handle A and the brush B as shown in FIG. 1, the inside of the protrusions 1 and 2 of the handle A is used as a guide so that the brush B can be inserted.

When the brush B is inserted, the structure is such that the stopper 3 falls down in four directions until the stopper 3 becomes flat, and when the brush B is inserted, the stopper 3 rises at a right angle to prevent the brush 3 from coming off. When removing the brush B, the stopper 3 is pushed down and pulled out. When the brush B is removed, it may be changed in the direction of use by 180 degrees from the previous use direction.

The size of the brush holding 5 is such that the width 6 and the thickness 7 are smaller than the inner sizes of the handles 8 and 9.
Is smaller than the inner dimensions of 3 and 4, so that the brush B can slide.

In order to improve the sliding, the guide portion of the handle A may be provided with a plurality of linear projections (12) in parallel with the sliding direction to reduce the contact area with the brush B.

In consideration of hygiene, the bottom of the guide portion of handle A,
The side surface may have a structure in which a hole (13) is opened.

The materials of A and B are made of the same plastic and nylon as the commonly used toothbrush.

FIG. 2 is adapted for use, with the arrows indicating the direction of sliding.

FIG. 3 is a modification of FIG. 2, in which the brush portion is enlarged and slid with the handle.

FIG. 4 is a view using an elastic member, and is an example of a structure (11) that can swing when a tooth brushing force is applied, and can swing in all directions.

[0020]

Since the present invention is configured as described above, the following effects can be obtained.

By sliding or swinging the handle portion and the brush portion of the toothbrush, the pressure at the bristle tip can be weakened to the teeth and the gums, and the displacement of the brush portion during brushing causes the amplitude width of the bristle tip. Can be reduced to reduce wear of teeth and damage to gums.

FIG. 7 shows a conventional use example, in which a bristle tip 16 of a brush portion 15 fixed to a handle hits at right angles to a contact portion 14, and a pressing force is transmitted directly. On the other hand, FIG. 8 shows an example of use of the present invention, which will be described below. In response to the movement of the handle 21, the brush portion 22 slides or swings as described above. At that time, the hair tip 17
As shown by dotted lines 18 and 19, it becomes oblique and the force is dispersed to the contact portion 20, and the pressing force has the effect of being weaker than that of the conventional toothbrush.

When the structure is such that the damaged brush part can be replaced, only the brush part B needs to be discarded, and the handle part A can be used repeatedly, which helps to save resources and also reduces the amount of household waste. Having.

The cleaning of the brush portion B and the handle A can be performed easily because the brush portion can be detachably separated from the handle, so that the brush portion can be kept more clean.

Since the brush portion B that contacts the tooth slides or swings, the force applied to the brush itself during brushing is reduced, and the progress of damage to the brush is slowed. In addition, since the direction of the detachable brush portion can be changed by 180 °, the bristle tip can be used evenly and the usable period is extended as compared with the conventional toothbrush. This contributes to cost reduction and resource saving, and is also effective in reducing domestic waste.

[Brief description of the drawings]

FIG. 1 is an elevation view of a divided sliding toothbrush.

FIG. 2 is an elevation view of a sliding toothbrush suitable for use.

FIG. 3 is an elevation view of another sliding toothbrush suitable for use.

FIG. 4 is an elevation view of an oscillating toothbrush.

FIG. 5 is a sectional view taken along the line DD ′ of FIG. 1 for reducing the contact area.

FIG. 6 is a plan view with holes in the handle.

FIG. 7 is a side view of a conventional use example.

FIG. 8 is a side view showing the movement of the hair tips during sliding and swinging.

Claims (4)

[Claims] 1. A toothbrush for reducing a pressing force, characterized in that a brush portion (B) has a function of being relatively displaced with respect to a handle (A) of the toothbrush. 2. A toothbrush handle portion and a brush portion that touches teeth are separate objects, and guides (1, 2) are provided on a part of the handle.
2. The brush part (B) is inserted into its guide and the brush part slides within a range (3, 4) on the side opposite to the artificial force with respect to the longitudinal movement of the toothbrush. Toothbrush. 3. A structure in which an elastic member is used as a brush base (11) of the toothbrush, and a joint portion with the handle is movable, and the brush part swings in a direction opposite to a direction in which the toothbrush is used. The toothbrush according to 1. 4. The toothbrush according to claim 2, wherein the displaceable brush portion has a structure detachable from a handle.
The toothbrush as described.