JP7140943B1 - toothbrush - Google Patents

Abstract

[Problem] In a cylindrical toothbrush having 360-degree omnidirectional radial bristles that are currently on the market, the bristles are aligned parallel to the tooth surface, so that unfinished portions are generated in vertical brushing. It's easy to do. In addition to that, the object was to develop a brush shape that increases the ability to remove plaque adhering to the tooth surface even with a light force. SOLUTION: In order to solve the above-mentioned two problems at once, the bristles of the cylindrical toothbrush, which are arranged in parallel, are spiral-shaped brushes that do not use any metals. [Selection drawing] Fig. 6

Description

The present invention relates to toothbrushes.

Among the toothbrushes on the market, it has come to be seen that the cylindrical toothbrush invented by the inventor of the present application is being sold, albeit in a small quantity.
The three types of publications are the inventions shown below.

JP 2005-103225 Patent No. 4000355 Patent No. 4579345

The structure will be explained with reference to the drawings in the specification of the present application.
In Patent Document 1, a disc brush small hole 2B located in the center of the disc brush 2 shown in FIG. Next, the spacer holes 3A located in the center of the spacers 3 (parallel side surfaces) shown in FIG.
Patent Document 2 discloses a disk brush small hole 2B located in the center of a disk brush 2C with projections shown in FIG. is laminated on a small-diameter shaft provided at the tip of the handle, and then the tip of the shaft is welded and fixed.
In Patent Document 3, instead of the spacer 3, a rubber brush-type spacer small hole 4A positioned in the center of the rubber brush-type spacer 4 shown in FIG. After laminating an appropriate amount, the tip of the shaft portion is welded and fixed.

In the cylindrical toothbrush having a structure in which disc brushes are laminated as described above, in FIGS. 2 and 3, since the disc brushes 2 are laminated in parallel, there are at least two problems described below.
One point is that the disk brushes 2 are stacked and arranged in parallel, so that there is always an unpolished portion in vertical brushing.
Secondly, unlike the twisted brush 5 shown in FIG. 1, there are two points: the ability of the brush to remove plaque and the insufficient scraping force. And the solution of these two points was made into the subject.

It comprises a handle 1 shaped to be gripped with one hand and reciprocated, and a cylindrical brush provided at the tip of the handle 1, wherein the handle 1 extends the handle 1 to the tip. The disc brush 2 has a small-diameter shaft provided so as to allow the handle shaft to pass through, and the cylindrical brush portion has a small hole in the center through which the handle shaft is passed, and has thin bristles in a radial shape, and the handle shaft. A toothbrush in which deformed spacers 3B having inclined side surfaces to be inserted into the toothbrush are turned upside down and alternately inserted into the handle shaft so that at least one point of the brush bristles contacts to form a spiral brush part.

As a result, the toothbrush and the brush part are made by folding the metal core shown in FIG. As a result, a toothbrush having the same structure as the twisted brush 5 is obtained, in which the brush material has a single linear brush portion which is opened in a radial shape and connected in a spiral shape at the same time.

Then, from the disc brushes 2 constituting the cylindrical brush portion, the disc brushes 2D having inclined projections on the side surfaces of the disc brushes 2 are turned upside down and alternately inserted into the handle shaft. It is also effective to use an irregular rubber brush type spacer 4B instead of the spacer 3. FIG.

The shape of the cylindrical brush part is aligned with the spiral shape, so there is no space in the brush part, and there is no unpolished even by vertical brushing, and the plaque removal power is improved.

In addition, the shape of the brush part is a spiral shape, and in the brush contact part, the amount of brush bristles is about doubled, so that the cleaning power of the interdental recesses is also improved.

BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing the shape of a twisted brush 5 currently commercially available as an industrial brush.
In this brush, a metal wire is folded in two, a suitably cut brush material is sandwiched between them, and the metal wire is twisted to open the brush material into a helical shape to form a twisted brush 5. - 特許庁

This twisted brush 5 is widely used as an industrial brush, and its manufacturing method is simple and its cleaning ability is excellent. It is not suitable for toothbrushes because the brush bristles fall off if a large amount is pinched or loosely twisted). In the oral cavity, it is used as an interdental brush, but it is not suitable as a product that is used for more than one month like a toothbrush in terms of durability.

Next, FIG. 2 is a perspective view of a cylindrical toothbrush previously invented by the inventor of the present application. A handle welded portion 1A is a portion where the tip of the shaft portion is welded and fixed by heat.

FIG. 3 is a diagram obtained by cutting FIG. 2 along the XX axis, from which the structure of the handle portion 1, the disk brush 2, the spacer 3, and the handle welded portion 1A can be easily understood.
As can be seen in FIG. 3, the disc brushes 2 are aligned in parallel with the thickness of the spacers 3. In the present invention, a method of forming only the brushes in a helical shape without changing the fundamental structure will be described below.

FIG. 4 shows the spacer 3 used above and the small spacer hole 3A located in the center of the spacer 3, and the deformed spacer 3B with one inclined side and the small spacer hole 3A located in the center of the spacer 3B used in the present invention. FIG. 5 is a front view and a side view of the disc brush 2 used in the present invention. Since it is obliquely inserted into the shaft portion located at the tip of 1, it is preferable to make the diameter slightly larger.

Then, the disk brush 2 shown in FIG. 5 and the deformed spacer 3B with one side inclined shown in FIG. FIG. 6 shows the present invention as claimed in claim 1, in which the tip of the handle is welded and fixed by heat to provide a handle welded portion 1A.

The following points should be noted when assembling the cylindrical brush:
1. Since every other disk brush 2 is inserted obliquely into the shaft portion, it is necessary to slightly enlarge the disk brush small hole 2B located in the center of all the disk brushes 2 in advance or to reduce the diameter of the shaft portion. be.
2. By providing rotation stop blasting portions 6 on both sides of the disk brush welded portion 2A located on the side surface of the disk brush 2, the disk brush 2 is prevented from rotating (both sides of the deformed spacer shown in FIG. 4). It is also conceivable to provide the face with anti-rotational blasting 6).
3. Since the spacer 3B inserted between the disk brushes 2 has an insertion method (orientation with respect to insertion) such as turning upside down as described above, it is color-coded, or the circumference of the disk brush small hole 2B or the insertion It is also a good idea to integrally form a mark indicating the insertion direction on the shaft.

Next, a method for manufacturing the cylindrical brush portion without using spacers 3 will be described.

As shown in FIG. 7, in Japanese Patent No. 4000355 previously invented by the present inventor, instead of inserting spacers 3 between disc brushes 2 aligned in a cylindrical brush portion, a disc brush By inserting and stacking disc brush small holes 2B of disc brushes 2C with protrusions, which are provided with protrusions on the entire periphery of the brush bristle welded portion located in the center of 2, into the insertion shaft, a parallel space is created between the brushes. are provided.

In the present invention, as shown in the direction of the arrow in FIG. 7, the disk of the irregular disk brush 2D is provided with irregular projections all around the brush bristle welding portion located at the center of the disk brush 2. By inserting the brush small holes 2B into the shank, turning them upside down and stacking them, at least one point of the brush bristles comes into contact with each other to complete a helical cylindrical brush portion.

In the rubber brush type spacer 4 shown in FIG. 8, a cylindrical toothbrush in which a space is provided between the disc brushes 2, Japanese Patent No. 4579345, was also invented by the inventor of the present application, and described in these three documents, In order to complete a spiral cylindrical brush portion in which the disk brushes 2 having parallel spaces are in contact with each other at one point in at least one rotation, the center of the deformed rubber brush-type spacer 4B is formed in the same manner as in the manufacturing of the cylindrical brush portion. By alternately inserting and stacking the disk brush 2 on the shaft portion provided with the rubber brush-type spacer small hole 4A at the tip of the handle 1, the brush bristles contact at least one point and form a helical cylinder The mold brush part is completed.

In this way, by devising a method of creating a space that is indispensable as a brush between the disk brushes 2, a toothbrush composed of laminated disk brushes 2, which was thought to be impossible to manufacture for a long time, can also be produced in the same way as the twisted brush 5. A spiral brush-shaped toothbrush was completed.

The front view which shows the shape of the twist brush commercially available. The perspective view which shows the shape of the commercially available cylindrical toothbrush. FIG. 3 is a cutaway view of the cylindrical toothbrush shown in FIG. 2 taken along the XX axis; FIG. 4 is a comparison diagram of a spacer used in a commercially available cylindrical toothbrush and a deformed spacer used in the present invention. FIG. 4A is a front view and a side view of a disk brush having a rotation-stopping blasted portion on the disk brush welded portion used in the present invention; The cylindrical toothbrush of this invention, and an enlarged front view of the brush part. FIG. 4 is a comparison diagram of a disk brush with protrusions that does not use spacers that is commercially available and a deformed disk brush that is used in the present invention. FIG. 4 is a comparison diagram of a rubber brush-type spacer used in a commercially available cylindrical toothbrush and a deformed rubber brush-type spacer used in the present invention.

Code description

1, handle,
1A, handle welding part,
2, disc brush,
2A disk brush welding part,
2B disc brush ostia,
2C disc brush with projections,
2D, irregular disk brush,
3, spacer,
3A, spacer ostium,
3B, irregular spacer,
4. Rubber brush type spacer,
4A, rubber brush type spacer ostia,
4B, irregular rubber brush type spacer,
5, twist brush,
6, anti-rotation blasting part,

Claims (3)

A handle having a shape that can be gripped and reciprocated with one hand, and a circular brush portion provided at the tip of the handle and having a circular shape when viewed in the longitudinal direction, the handle extending from the tip of the handle. A disk brush having a small hole in the center through which the handle shaft passes, and having brush bristles radially, and a spacer with one side inclined through the handle shaft. and are alternately stacked through the handle shaft, and the adjacent spacers are turned upside down in the axial direction and aligned, so that the disk brush is inclined along the inclination of the spacer, and one point of the brush bristles is aligned with the spacer A toothbrush contacting one point of the brush bristles of the adjacent disk brush across the disk brush to form a spiral brush portion at the same time. 2. The toothbrush according to claim 1, which has a circular brush portion when viewed in the longitudinal direction, wherein the spacer is a rubber brush-type spacer. A handle having a shape that can be gripped and reciprocated with one hand, and a circular brush portion provided at the tip of the handle and having a circular shape when viewed in the longitudinal direction, the handle extending from the tip of the handle. A small hole is provided in the center to allow the handle shaft to pass through, and a protruding portion that passes through the handle shaft and is inclined on one side is provided on the periphery of the radial brush. In the disc brush having bristles, the adjacent disc brushes are turned upside down and aligned so that one point of the brush bristles comes into contact with one point of the bristles of the adjacent disc brush, and at the same time, the helical brush portion is formed. A toothbrush, characterized in that:

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